diff --git a/.Makefile.swp b/.Makefile.swp
deleted file mode 100644
index 0cd9d81..0000000
Binary files a/.Makefile.swp and /dev/null differ
diff --git a/.testresults.swp b/.testresults.swp
deleted file mode 100644
index d7db455..0000000
Binary files a/.testresults.swp and /dev/null differ
diff --git a/srcs/add/ft_any.c b/srcd/add/ft_any.c
similarity index 100%
rename from srcs/add/ft_any.c
rename to srcd/add/ft_any.c
diff --git a/srcs/add/ft_arraymap.c b/srcd/add/ft_arraymap.c
similarity index 100%
rename from srcs/add/ft_arraymap.c
rename to srcd/add/ft_arraymap.c
diff --git a/srcs/add/ft_atoibase.c b/srcd/add/ft_atoibase.c
similarity index 100%
rename from srcs/add/ft_atoibase.c
rename to srcd/add/ft_atoibase.c
diff --git a/srcs/add/ft_convertbase.c b/srcd/add/ft_convertbase.c
similarity index 100%
rename from srcs/add/ft_convertbase.c
rename to srcd/add/ft_convertbase.c
diff --git a/srcs/add/ft_foreach.c b/srcd/add/ft_foreach.c
similarity index 100%
rename from srcs/add/ft_foreach.c
rename to srcd/add/ft_foreach.c
diff --git a/srcs/add/ft_issort.c b/srcd/add/ft_issort.c
similarity index 100%
rename from srcs/add/ft_issort.c
rename to srcd/add/ft_issort.c
diff --git a/srcs/add/ft_memalloc.c b/srcd/add/ft_memalloc.c
similarity index 100%
rename from srcs/add/ft_memalloc.c
rename to srcd/add/ft_memalloc.c
diff --git a/srcs/add/ft_memdel.c b/srcd/add/ft_memdel.c
similarity index 100%
rename from srcs/add/ft_memdel.c
rename to srcd/add/ft_memdel.c
diff --git a/srcs/add/ft_putchar.c b/srcd/add/ft_putchar.c
similarity index 100%
rename from srcs/add/ft_putchar.c
rename to srcd/add/ft_putchar.c
diff --git a/srcs/add/ft_putendl.c b/srcd/add/ft_putendl.c
similarity index 100%
rename from srcs/add/ft_putendl.c
rename to srcd/add/ft_putendl.c
diff --git a/srcs/add/ft_putnbr.c b/srcd/add/ft_putnbr.c
similarity index 100%
rename from srcs/add/ft_putnbr.c
rename to srcd/add/ft_putnbr.c
diff --git a/srcs/add/ft_putnbrbase.c b/srcd/add/ft_putnbrbase.c
similarity index 100%
rename from srcs/add/ft_putnbrbase.c
rename to srcd/add/ft_putnbrbase.c
diff --git a/srcs/add/ft_putnbrendl.c b/srcd/add/ft_putnbrendl.c
similarity index 100%
rename from srcs/add/ft_putnbrendl.c
rename to srcd/add/ft_putnbrendl.c
diff --git a/srcs/add/ft_putnbrendl_fd.c b/srcd/add/ft_putnbrendl_fd.c
similarity index 100%
rename from srcs/add/ft_putnbrendl_fd.c
rename to srcd/add/ft_putnbrendl_fd.c
diff --git a/srcs/add/ft_putstr.c b/srcd/add/ft_putstr.c
similarity index 100%
rename from srcs/add/ft_putstr.c
rename to srcd/add/ft_putstr.c
diff --git a/srcs/add/ft_strcat.c b/srcd/add/ft_strcat.c
similarity index 100%
rename from srcs/add/ft_strcat.c
rename to srcd/add/ft_strcat.c
diff --git a/srcs/add/ft_strclr.c b/srcd/add/ft_strclr.c
similarity index 100%
rename from srcs/add/ft_strclr.c
rename to srcd/add/ft_strclr.c
diff --git a/srcs/add/ft_strcmp.c b/srcd/add/ft_strcmp.c
similarity index 100%
rename from srcs/add/ft_strcmp.c
rename to srcd/add/ft_strcmp.c
diff --git a/srcs/add/ft_strcpy.c b/srcd/add/ft_strcpy.c
similarity index 100%
rename from srcs/add/ft_strcpy.c
rename to srcd/add/ft_strcpy.c
diff --git a/srcs/add/ft_strdel.c b/srcd/add/ft_strdel.c
similarity index 100%
rename from srcs/add/ft_strdel.c
rename to srcd/add/ft_strdel.c
diff --git a/srcs/add/ft_strequ.c b/srcd/add/ft_strequ.c
similarity index 100%
rename from srcs/add/ft_strequ.c
rename to srcd/add/ft_strequ.c
diff --git a/srcs/add/ft_striter.c b/srcd/add/ft_striter.c
similarity index 100%
rename from srcs/add/ft_striter.c
rename to srcd/add/ft_striter.c
diff --git a/srcs/add/ft_striteri.c b/srcd/add/ft_striteri.c
similarity index 100%
rename from srcs/add/ft_striteri.c
rename to srcd/add/ft_striteri.c
diff --git a/srcs/add/ft_strjoinfree.c b/srcd/add/ft_strjoinfree.c
similarity index 100%
rename from srcs/add/ft_strjoinfree.c
rename to srcd/add/ft_strjoinfree.c
diff --git a/srcs/add/ft_strmap.c b/srcd/add/ft_strmap.c
similarity index 100%
rename from srcs/add/ft_strmap.c
rename to srcd/add/ft_strmap.c
diff --git a/srcs/add/ft_strmultisplit.c b/srcd/add/ft_strmultisplit.c
similarity index 100%
rename from srcs/add/ft_strmultisplit.c
rename to srcd/add/ft_strmultisplit.c
diff --git a/srcs/add/ft_strncat.c b/srcd/add/ft_strncat.c
similarity index 100%
rename from srcs/add/ft_strncat.c
rename to srcd/add/ft_strncat.c
diff --git a/srcs/add/ft_strncpy.c b/srcd/add/ft_strncpy.c
similarity index 100%
rename from srcs/add/ft_strncpy.c
rename to srcd/add/ft_strncpy.c
diff --git a/srcs/add/ft_strnequ.c b/srcd/add/ft_strnequ.c
similarity index 100%
rename from srcs/add/ft_strnequ.c
rename to srcd/add/ft_strnequ.c
diff --git a/srcs/add/ft_strnew.c b/srcd/add/ft_strnew.c
similarity index 100%
rename from srcs/add/ft_strnew.c
rename to srcd/add/ft_strnew.c
diff --git a/srcs/add/ft_strstr.c b/srcd/add/ft_strstr.c
similarity index 100%
rename from srcs/add/ft_strstr.c
rename to srcd/add/ft_strstr.c
diff --git a/srcs/bonus/ft_lstadd_back.c b/srcd/bonus/ft_lstadd_back.c
similarity index 100%
rename from srcs/bonus/ft_lstadd_back.c
rename to srcd/bonus/ft_lstadd_back.c
diff --git a/srcs/bonus/ft_lstadd_front.c b/srcd/bonus/ft_lstadd_front.c
similarity index 100%
rename from srcs/bonus/ft_lstadd_front.c
rename to srcd/bonus/ft_lstadd_front.c
diff --git a/srcs/bonus/ft_lstclear.c b/srcd/bonus/ft_lstclear.c
similarity index 100%
rename from srcs/bonus/ft_lstclear.c
rename to srcd/bonus/ft_lstclear.c
diff --git a/srcs/bonus/ft_lstdelone.c b/srcd/bonus/ft_lstdelone.c
similarity index 100%
rename from srcs/bonus/ft_lstdelone.c
rename to srcd/bonus/ft_lstdelone.c
diff --git a/srcs/bonus/ft_lstiter.c b/srcd/bonus/ft_lstiter.c
similarity index 100%
rename from srcs/bonus/ft_lstiter.c
rename to srcd/bonus/ft_lstiter.c
diff --git a/srcs/bonus/ft_lstlast.c b/srcd/bonus/ft_lstlast.c
similarity index 100%
rename from srcs/bonus/ft_lstlast.c
rename to srcd/bonus/ft_lstlast.c
diff --git a/srcs/bonus/ft_lstmap.c b/srcd/bonus/ft_lstmap.c
similarity index 100%
rename from srcs/bonus/ft_lstmap.c
rename to srcd/bonus/ft_lstmap.c
diff --git a/srcs/bonus/ft_lstnew.c b/srcd/bonus/ft_lstnew.c
similarity index 100%
rename from srcs/bonus/ft_lstnew.c
rename to srcd/bonus/ft_lstnew.c
diff --git a/srcs/bonus/ft_lstsize.c b/srcd/bonus/ft_lstsize.c
similarity index 100%
rename from srcs/bonus/ft_lstsize.c
rename to srcd/bonus/ft_lstsize.c
diff --git a/srcs/part1/ft_atoi.c b/srcd/part1/ft_atoi.c
similarity index 100%
rename from srcs/part1/ft_atoi.c
rename to srcd/part1/ft_atoi.c
diff --git a/srcs/part1/ft_bzero.c b/srcd/part1/ft_bzero.c
similarity index 100%
rename from srcs/part1/ft_bzero.c
rename to srcd/part1/ft_bzero.c
diff --git a/srcs/part1/ft_calloc.c b/srcd/part1/ft_calloc.c
similarity index 100%
rename from srcs/part1/ft_calloc.c
rename to srcd/part1/ft_calloc.c
diff --git a/srcs/part1/ft_isalnum.c b/srcd/part1/ft_isalnum.c
similarity index 100%
rename from srcs/part1/ft_isalnum.c
rename to srcd/part1/ft_isalnum.c
diff --git a/srcs/part1/ft_isalpha.c b/srcd/part1/ft_isalpha.c
similarity index 100%
rename from srcs/part1/ft_isalpha.c
rename to srcd/part1/ft_isalpha.c
diff --git a/srcs/part1/ft_isascii.c b/srcd/part1/ft_isascii.c
similarity index 100%
rename from srcs/part1/ft_isascii.c
rename to srcd/part1/ft_isascii.c
diff --git a/srcs/part1/ft_isdigit.c b/srcd/part1/ft_isdigit.c
similarity index 100%
rename from srcs/part1/ft_isdigit.c
rename to srcd/part1/ft_isdigit.c
diff --git a/srcs/part1/ft_isprint.c b/srcd/part1/ft_isprint.c
similarity index 100%
rename from srcs/part1/ft_isprint.c
rename to srcd/part1/ft_isprint.c
diff --git a/srcs/part1/ft_memccpy.c b/srcd/part1/ft_memccpy.c
similarity index 100%
rename from srcs/part1/ft_memccpy.c
rename to srcd/part1/ft_memccpy.c
diff --git a/srcs/part1/ft_memchr.c b/srcd/part1/ft_memchr.c
similarity index 100%
rename from srcs/part1/ft_memchr.c
rename to srcd/part1/ft_memchr.c
diff --git a/srcs/part1/ft_memcmp.c b/srcd/part1/ft_memcmp.c
similarity index 100%
rename from srcs/part1/ft_memcmp.c
rename to srcd/part1/ft_memcmp.c
diff --git a/srcs/part1/ft_memcpy.c b/srcd/part1/ft_memcpy.c
similarity index 74%
rename from srcs/part1/ft_memcpy.c
rename to srcd/part1/ft_memcpy.c
index 489857d..6cee84f 100644
--- a/srcs/part1/ft_memcpy.c
+++ b/srcd/part1/ft_memcpy.c
@@ -6,7 +6,7 @@
 /*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2019/11/25 13:56:16 by hulamy            #+#    #+#             */
-/*   Updated: 2019/11/25 13:56:17 by hulamy           ###   ########.fr       */
+/*   Updated: 2019/11/28 13:47:43 by hulamy           ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -14,18 +14,31 @@
 ** copy n characters from src to dst and return dst
 */
 
+/*
+**	#include <libc.h>
+**
+**	void	*ft_memcpy(void *dst, const void *src, size_t n);
+**
+**	int		main(int ac, char **av)
+**	{
+**		if (ac == 4)
+**			printf("%s\n", ft_memcpy(av[1], av[2], atoi(av[3])));
+**		return (0);
+**	}
+*/
+
 #include "libft.h"
 
 void	*ft_memcpy(void *dst, const void *src, size_t n)
 {
-	size_t	i;
 	char	*ptr;
 	char	*ptr2;
 
 	ptr = (char *)dst;
 	ptr2 = (char *)src;
-	i = -1;
-	while (++i < n)
-		ptr[i] = ptr2[i];
+	if (dst == src)
+		return (dst);
+	while (n--)
+		ptr[n] = ptr2[n];
 	return (dst);
 }
diff --git a/srcs/part1/ft_memmove.c b/srcd/part1/ft_memmove.c
similarity index 100%
rename from srcs/part1/ft_memmove.c
rename to srcd/part1/ft_memmove.c
diff --git a/srcs/part1/ft_memset.c b/srcd/part1/ft_memset.c
similarity index 100%
rename from srcs/part1/ft_memset.c
rename to srcd/part1/ft_memset.c
diff --git a/srcs/part1/ft_strchr.c b/srcd/part1/ft_strchr.c
similarity index 100%
rename from srcs/part1/ft_strchr.c
rename to srcd/part1/ft_strchr.c
diff --git a/srcs/part1/ft_strdup.c b/srcd/part1/ft_strdup.c
similarity index 100%
rename from srcs/part1/ft_strdup.c
rename to srcd/part1/ft_strdup.c
diff --git a/srcs/part1/ft_strlcat.c b/srcd/part1/ft_strlcat.c
similarity index 100%
rename from srcs/part1/ft_strlcat.c
rename to srcd/part1/ft_strlcat.c
diff --git a/srcs/part1/ft_strlcpy.c b/srcd/part1/ft_strlcpy.c
similarity index 100%
rename from srcs/part1/ft_strlcpy.c
rename to srcd/part1/ft_strlcpy.c
diff --git a/srcs/part1/ft_strlen.c b/srcd/part1/ft_strlen.c
similarity index 100%
rename from srcs/part1/ft_strlen.c
rename to srcd/part1/ft_strlen.c
diff --git a/srcs/part1/ft_strncmp.c b/srcd/part1/ft_strncmp.c
similarity index 100%
rename from srcs/part1/ft_strncmp.c
rename to srcd/part1/ft_strncmp.c
diff --git a/srcs/part1/ft_strnstr.c b/srcd/part1/ft_strnstr.c
similarity index 100%
rename from srcs/part1/ft_strnstr.c
rename to srcd/part1/ft_strnstr.c
diff --git a/srcs/part1/ft_strrchr.c b/srcd/part1/ft_strrchr.c
similarity index 100%
rename from srcs/part1/ft_strrchr.c
rename to srcd/part1/ft_strrchr.c
diff --git a/srcs/part1/ft_tolower.c b/srcd/part1/ft_tolower.c
similarity index 100%
rename from srcs/part1/ft_tolower.c
rename to srcd/part1/ft_tolower.c
diff --git a/srcs/part1/ft_toupper.c b/srcd/part1/ft_toupper.c
similarity index 100%
rename from srcs/part1/ft_toupper.c
rename to srcd/part1/ft_toupper.c
diff --git a/srcs/part2/ft_itoa.c b/srcd/part2/ft_itoa.c
similarity index 100%
rename from srcs/part2/ft_itoa.c
rename to srcd/part2/ft_itoa.c
diff --git a/srcs/part2/ft_putchar_fd.c b/srcd/part2/ft_putchar_fd.c
similarity index 100%
rename from srcs/part2/ft_putchar_fd.c
rename to srcd/part2/ft_putchar_fd.c
diff --git a/srcs/part2/ft_putendl_fd.c b/srcd/part2/ft_putendl_fd.c
similarity index 100%
rename from srcs/part2/ft_putendl_fd.c
rename to srcd/part2/ft_putendl_fd.c
diff --git a/srcs/part2/ft_putnbr_fd.c b/srcd/part2/ft_putnbr_fd.c
similarity index 100%
rename from srcs/part2/ft_putnbr_fd.c
rename to srcd/part2/ft_putnbr_fd.c
diff --git a/srcs/part2/ft_putstr_fd.c b/srcd/part2/ft_putstr_fd.c
similarity index 100%
rename from srcs/part2/ft_putstr_fd.c
rename to srcd/part2/ft_putstr_fd.c
diff --git a/srcs/part2/ft_split.c b/srcd/part2/ft_split.c
similarity index 100%
rename from srcs/part2/ft_split.c
rename to srcd/part2/ft_split.c
diff --git a/srcs/part2/ft_strjoin.c b/srcd/part2/ft_strjoin.c
similarity index 100%
rename from srcs/part2/ft_strjoin.c
rename to srcd/part2/ft_strjoin.c
diff --git a/srcs/part2/ft_strmapi.c b/srcd/part2/ft_strmapi.c
similarity index 100%
rename from srcs/part2/ft_strmapi.c
rename to srcd/part2/ft_strmapi.c
diff --git a/srcs/part2/ft_strtrim.c b/srcd/part2/ft_strtrim.c
similarity index 100%
rename from srcs/part2/ft_strtrim.c
rename to srcd/part2/ft_strtrim.c
diff --git a/srcs/part2/ft_substr.c b/srcd/part2/ft_substr.c
similarity index 100%
rename from srcs/part2/ft_substr.c
rename to srcd/part2/ft_substr.c
diff --git a/srcs/.DS_Store b/srcs/.DS_Store
deleted file mode 100644
index 3653929..0000000
Binary files a/srcs/.DS_Store and /dev/null differ
diff --git a/srcs/ft_any.c b/srcs/ft_any.c
new file mode 100644
index 0000000..349e3a9
--- /dev/null
+++ b/srcs/ft_any.c
@@ -0,0 +1,26 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_any.c                                           :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2018/11/16 15:14:49 by hulamy            #+#    #+#             */
+/*   Updated: 2018/11/16 15:14:53 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+int		ft_any(char **tab, int (*f)(char*))
+{
+	int i;
+
+	i = -1;
+	if (!tab)
+		return (0);
+	while (tab[++i])
+		if (f(tab[i]) == 1)
+			return (1);
+	return (0);
+}
diff --git a/srcs/ft_arraymap.c b/srcs/ft_arraymap.c
new file mode 100644
index 0000000..267510a
--- /dev/null
+++ b/srcs/ft_arraymap.c
@@ -0,0 +1,28 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_arraymap.c                                      :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2018/11/16 15:17:24 by hulamy            #+#    #+#             */
+/*   Updated: 2018/11/16 15:17:27 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+int		*ft_arraymap(int *tab, int length, int (*f)(int))
+{
+	int	i;
+	int	*newtab;
+
+	i = -1;
+	if (!tab)
+		return (NULL);
+	if (!(newtab = (int*)malloc(sizeof(*newtab) * (length + 1))))
+		return (NULL);
+	while (++i < length)
+		newtab[i] = (*f)(tab[i]);
+	return (newtab);
+}
diff --git a/srcs/ft_atoi.c b/srcs/ft_atoi.c
new file mode 100644
index 0000000..74da199
--- /dev/null
+++ b/srcs/ft_atoi.c
@@ -0,0 +1,39 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_atoi.c                                          :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 13:54:29 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/25 13:54:35 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+int		ft_atoi(const char *str)
+{
+	long long	nbr;
+	int			i;
+	int			n;
+
+	i = 0;
+	n = 1;
+	nbr = 0;
+	while ((str[i] == 32) || (str[i] > 8 && str[i] < 14))
+		i++;
+	if (str[i] == '-')
+		n = -1;
+	if (str[i] == '+' || str[i] == '-')
+		i++;
+	while (str[i] >= '0' && str[i] <= '9')
+	{
+		if ((nbr >= 922337203685477580
+						&& ((str[i] > 8 && n < 0) || (str[i] > 7 && n > 0))))
+			return ((n > 0) ? -1 : 0);
+		else
+			nbr = nbr * 10 + (str[i++] - '0');
+	}
+	return (nbr * n);
+}
diff --git a/srcs/ft_atoibase.c b/srcs/ft_atoibase.c
new file mode 100644
index 0000000..fdb92d1
--- /dev/null
+++ b/srcs/ft_atoibase.c
@@ -0,0 +1,75 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_atoibase.c                                      :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2018/11/16 15:15:31 by hulamy            #+#    #+#             */
+/*   Updated: 2018/11/16 15:22:34 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+static int	is_valid_base(char *base, int i, int j)
+{
+	while (base[i])
+	{
+		j = i + 1;
+		while (base[j])
+		{
+			if (base[i] == base[j])
+				return (0);
+			j++;
+		}
+		if (base[i] == '-' || base[i] == '+')
+			return (0);
+		i++;
+	}
+	if (i >= 2)
+		return (1);
+	return (0);
+}
+
+static int	skip(int i, char *str, int *n)
+{
+	while ((str[i] == 32) || (str[i] > 8 && str[i] < 14))
+		i++;
+	if (str[i] == '+' || str[i] == '-')
+	{
+		if (str[i] == '-')
+			*n = -1;
+		i++;
+	}
+	return (i);
+}
+
+int			ft_atoibase(char *str, char *base)
+{
+	int i;
+	int j;
+	int length;
+	int res;
+	int n;
+
+	length = 0;
+	res = 0;
+	n = 1;
+	if (!is_valid_base(base, 0, 0))
+		return (0);
+	while (base[length])
+		length++;
+	i = skip(0, str, &n);
+	while (str[i] && str[i] > 32 && str[i] != '-' && str[i] != '+')
+	{
+		j = 0;
+		while (str[i] != base[j] && base[j])
+			j++;
+		if (base[j] == '\0')
+			return (0);
+		res = (res * length) + j;
+		i++;
+	}
+	return (res * n);
+}
diff --git a/srcs/ft_bzero.c b/srcs/ft_bzero.c
new file mode 100644
index 0000000..f66336a
--- /dev/null
+++ b/srcs/ft_bzero.c
@@ -0,0 +1,27 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_bzero.c                                         :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 13:54:43 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/25 13:54:44 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	ft_bzero(void *s, size_t n)
+{
+	size_t			i;
+	unsigned char	*ptr;
+
+	if (n)
+	{
+		ptr = (unsigned char *)s;
+		i = 0;
+		while (i < n)
+			ptr[i++] = '\0';
+	}
+}
diff --git a/srcs/ft_calloc.c b/srcs/ft_calloc.c
new file mode 100644
index 0000000..611ce62
--- /dev/null
+++ b/srcs/ft_calloc.c
@@ -0,0 +1,33 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_calloc.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 13:54:53 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/25 14:28:35 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+**	exemple allocation for 5 integers with malloc then calloc :
+**	a = (int *)malloc(5 * sizeof(int));	//5*4bytes = 20 bytes
+**	free(a);
+**	a = (int *)calloc(5, sizeof(int));
+**
+**	allocate count * size byte of memory and
+**	return a pointer to the allocated memory
+*/
+
+#include "libft.h"
+
+void	*ft_calloc(size_t count, size_t size)
+{
+	void	*tmp;
+
+	if (!count || !size || !(tmp = malloc(count * size)))
+		return (NULL);
+	ft_bzero(tmp, count * size);
+	return (tmp);
+}
diff --git a/srcs/ft_convertbase.c b/srcs/ft_convertbase.c
new file mode 100644
index 0000000..7fe9bad
--- /dev/null
+++ b/srcs/ft_convertbase.c
@@ -0,0 +1,86 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_convertbase.c                                   :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2018/11/16 15:15:55 by hulamy            #+#    #+#             */
+/*   Updated: 2019/04/17 17:09:35 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+static int	ft_malloc_size(int decimal, int length, int i)
+{
+	if (decimal <= 0)
+		i++;
+	while (decimal)
+	{
+		decimal /= length;
+		i++;
+	}
+	return (i);
+}
+
+static char	*ft_decimal_to_base(int decimal, char *base, char *res, int size)
+{
+	long	nb;
+	int		i;
+
+	nb = decimal;
+	i = 0;
+	while (base[i])
+		i++;
+	if (nb < 0)
+		nb = -nb;
+	while (--size >= 0)
+	{
+		res[size] = base[nb % i];
+		nb /= i;
+	}
+	return (res);
+}
+
+static int	ft_base_to_decimal(char *nbr, char *base, int length, int i)
+{
+	long	decimal;
+	int		j;
+
+	decimal = 0;
+	if (nbr[i] == '-')
+		i++;
+	while (nbr[i])
+	{
+		j = 0;
+		while (nbr[i] != base[j] && base[j])
+			j++;
+		decimal = (decimal * length) + j;
+		i++;
+	}
+	if (nbr[0] == '-')
+		decimal = -decimal;
+	return (decimal);
+}
+
+char		*ft_convertbase(char *nbr, char *base_from, char *base_to)
+{
+	int		length;
+	int		size;
+	int		decimal;
+	char	*res;
+
+	res = 0;
+	length = 0;
+	while (base_from[length])
+		length++;
+	decimal = ft_base_to_decimal(nbr, base_from, length, 0);
+	length = 0;
+	while (base_to[length])
+		length++;
+	size = ft_malloc_size(decimal, length, 0);
+	res = (char *)malloc(sizeof(char) * (size + 1));
+	res[size] = '\0';
+	return (ft_decimal_to_base(decimal, base_to, res, size));
+}
diff --git a/srcs/ft_foreach.c b/srcs/ft_foreach.c
new file mode 100644
index 0000000..aaf7649
--- /dev/null
+++ b/srcs/ft_foreach.c
@@ -0,0 +1,22 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_foreach.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2018/11/16 15:16:10 by hulamy            #+#    #+#             */
+/*   Updated: 2018/11/16 15:16:11 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	ft_foreach(int *tab, int length, void (*f)(int))
+{
+	int	i;
+
+	i = 0;
+	while (i < length && tab && tab[i])
+		(*f)(tab[i++]);
+}
diff --git a/srcs/ft_isalnum.c b/srcs/ft_isalnum.c
new file mode 100644
index 0000000..dc1bb03
--- /dev/null
+++ b/srcs/ft_isalnum.c
@@ -0,0 +1,18 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_isalnum.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 13:55:05 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/25 13:55:06 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+int		ft_isalnum(int c)
+{
+	return (ft_isalpha(c) || ft_isdigit(c));
+}
diff --git a/srcs/ft_isalpha.c b/srcs/ft_isalpha.c
new file mode 100644
index 0000000..e0ec883
--- /dev/null
+++ b/srcs/ft_isalpha.c
@@ -0,0 +1,18 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_isalpha.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 13:55:15 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/25 13:55:17 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+int		ft_isalpha(int c)
+{
+	return ((c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z'));
+}
diff --git a/srcs/ft_isascii.c b/srcs/ft_isascii.c
new file mode 100644
index 0000000..f201880
--- /dev/null
+++ b/srcs/ft_isascii.c
@@ -0,0 +1,18 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_isascii.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 13:55:24 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/25 13:55:25 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+int		ft_isascii(int c)
+{
+	return (c >= 0 && c <= 127);
+}
diff --git a/srcs/ft_isdigit.c b/srcs/ft_isdigit.c
new file mode 100644
index 0000000..69e0809
--- /dev/null
+++ b/srcs/ft_isdigit.c
@@ -0,0 +1,18 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_isdigit.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 13:55:32 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/25 13:55:33 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+int		ft_isdigit(int c)
+{
+	return (c >= '0' && c <= '9');
+}
diff --git a/srcs/ft_isprint.c b/srcs/ft_isprint.c
new file mode 100644
index 0000000..21395ab
--- /dev/null
+++ b/srcs/ft_isprint.c
@@ -0,0 +1,18 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_isprint.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 13:55:43 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/25 13:55:44 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+int		ft_isprint(int c)
+{
+	return (c >= 32 && c < 127);
+}
diff --git a/srcs/ft_issort.c b/srcs/ft_issort.c
new file mode 100644
index 0000000..842195b
--- /dev/null
+++ b/srcs/ft_issort.c
@@ -0,0 +1,26 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_issort.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2018/11/16 15:18:14 by hulamy            #+#    #+#             */
+/*   Updated: 2018/11/16 15:18:15 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+int		ft_issort(int *tab, int length, int (*f)(int, int))
+{
+	int i;
+
+	i = -1;
+	if (!tab)
+		return (0);
+	while (++i < length - 1)
+		if (f(tab[i], tab[i + 1]) > 0)
+			return (0);
+	return (1);
+}
diff --git a/srcs/ft_itoa.c b/srcs/ft_itoa.c
new file mode 100644
index 0000000..af0406b
--- /dev/null
+++ b/srcs/ft_itoa.c
@@ -0,0 +1,55 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_itoa.c                                          :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 13:59:01 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/25 14:21:01 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+**	take an integer and give a string
+*/
+
+/*
+**	#include <libc.h>
+**
+**	char			*ft_itoa(int n)
+**
+**	int	main(int ac, char **av)
+**	{
+**		if (ac == 2)
+**		{
+**			printf("%s\n",ft_itoa(atoi(av[1])));
+**		}
+**		return 0;
+**	}
+*/
+
+#include "libft.h"
+
+char			*ft_itoa(int n)
+{
+	char		*str;
+	int			len;
+	long int	nbis;
+
+	len = (n < 0) ? 2 : 1;
+	nbis = n;
+	while (nbis /= 10)
+		len++;
+	nbis = n;
+	nbis *= (nbis < 0) ? -1 : 1;
+	if (!(str = (char *)malloc(sizeof(char) * (len + 1))))
+		return (NULL);
+	str[len] = '\0';
+	str[--len] = nbis % 10 + '0';
+	while (nbis /= 10)
+		str[--len] = nbis % 10 + '0';
+	if (n < 0)
+		str[0] = '-';
+	return (str);
+}
diff --git a/srcs/ft_lstadd_back.c b/srcs/ft_lstadd_back.c
new file mode 100644
index 0000000..37084d1
--- /dev/null
+++ b/srcs/ft_lstadd_back.c
@@ -0,0 +1,91 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_lstadd_back.c                                   :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 14:11:53 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/25 14:36:12 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+**	add an element to the end of a list
+**	or first if list has no element so far
+*/
+
+/*
+**	#include <libc.h>
+**
+**	typedef struct		s_list
+**	{
+**		void			*content;
+**		struct s_list	*next;
+**	}					t_list;
+**
+**	t_list	*ft_lstnew(void *content)
+**	{
+**		t_list		*lst;
+**
+**		if (!(lst = (t_list *)malloc(sizeof(*lst))))
+**			return (NULL);
+**		if (!content)
+**			lst->content = NULL;
+**		else
+**			lst->content = content;
+**		lst->next = NULL;
+**		return (lst);
+**	}
+**
+**	void	ft_lstadd_back(t_list **alst, t_list *new);
+**
+**	int	main(void)
+**	{
+**		char	tresor;
+**		char	matos;
+**		char	friends;
+**		t_list	*toto;
+**		t_list	*tmp;
+**
+**		tresor = 'a';
+**		matos = 'b';
+**		friends = 'c';
+**		toto = ft_lstnew(&tresor);
+**		printf("toto->data          :%c\n",*(char*)(toto->content));
+**		tmp = ft_lstnew(&matos);
+**		ft_lstadd_back(&toto, tmp);
+**		printf("----------------------\n");
+**		printf("toto->data          :%c\n",*(char*)(toto->content));
+**		printf("toto->nxt->data     :%c\n",*(char*)(toto->next->content));
+**		tmp = ft_lstnew(&friends);
+**		ft_lstadd_back(&toto, tmp);
+**		printf("----------------------\n");
+**		printf("toto->data          :%c\n",*(char*)(toto->content));
+**		printf("toto->nxt->data     :%c\n",*(char*)(toto->next->content));
+**		printf("toto->nxt->nxt->data:%c\n",*(char*)(toto->next->next->content));
+**		printf("toto->nxt->nxt->nxt :%s\n",(char*)(toto->next->next->next));
+**		return (0);
+**	}
+*/
+
+#include "libft.h"
+
+void	ft_lstadd_back(t_list **alst, t_list *new)
+{
+	t_list	*tmp;
+
+	if (alst)
+	{
+		tmp = *alst;
+		if (!tmp)
+			*alst = new;
+		else
+		{
+			while (tmp->next)
+				tmp = tmp->next;
+			tmp->next = new;
+		}
+		new->next = NULL;
+	}
+}
diff --git a/srcs/ft_lstadd_front.c b/srcs/ft_lstadd_front.c
new file mode 100644
index 0000000..3f90569
--- /dev/null
+++ b/srcs/ft_lstadd_front.c
@@ -0,0 +1,94 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_lstadd_front.c                                  :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 14:12:02 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/25 14:36:54 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+**	add an element to the begining of a list
+*/
+
+/*
+**	#include <libc.h>
+**
+**	typedef struct		s_list
+**	{
+**		void			*content;
+**		struct s_list	*next;
+**	}					t_list;
+**
+**	void	*ft_memcpy(void *dst, const void *src, size_t n)
+**	{
+**		size_t	i;
+**		char	*ptr;
+**		char	*ptr2;
+**
+**		ptr = (char *)dst;
+**		ptr2 = (char *)src;
+**		i = -1;
+**		while (++i < n)
+**			ptr[i] = ptr2[i];
+**		return (dst);
+**	}
+**
+**	t_list	*ft_lstnew(void *content)
+**	{
+**		t_list		*lst;
+**
+**		if (!(lst = (t_list *)malloc(sizeof(*lst))))
+**			return (NULL);
+**		if (!content)
+**			lst->content = NULL;
+**		else
+**		{
+**			if (!(lst->content = malloc(sizeof(content))))
+**				return (NULL);
+**			ft_memcpy(lst->content, content, sizeof(content));
+**		}
+**		lst->next = NULL;
+**		return (lst);
+**	}
+**
+**	void	ft_lstadd_front(t_list **alst, t_list *new);
+**
+**	int	main(void)
+**	{
+**		char	tresor;
+**		char	matos;
+**		char	friends;
+**		t_list	*toto;
+**		t_list	*tmp;
+**
+**		tresor = 'a';
+**		matos = 'b';
+**		friends = 'c';
+**		toto = ft_lstnew(&tresor);
+**		printf("toto->data          :%c\n",*(char*)(toto->content));
+**		tmp = ft_lstnew(&matos);
+**		ft_lstadd_front(&toto, tmp);
+**		printf("----------------------\n");
+**		printf("toto->data          :%c\n",*(char*)(toto->content));
+**		printf("toto->nxt->data     :%c\n",*(char*)(toto->next->content));
+**		tmp = ft_lstnew(&friends);
+**		ft_lstadd_front(&toto, tmp);
+**		printf("----------------------\n");
+**		printf("toto->data          :%c\n",*(char*)(toto->content));
+**		printf("toto->nxt->data     :%c\n",*(char*)(toto->next->content));
+**		printf("toto->nxt->nxt->dqta:%c\n",*(char*)(toto->next->next->content));
+**		return (0);
+**	}
+*/
+
+#include "libft.h"
+
+void	ft_lstadd_front(t_list **alst, t_list *new)
+{
+	new->next = *alst;
+	*alst = new;
+}
diff --git a/srcs/ft_lstclear.c b/srcs/ft_lstclear.c
new file mode 100644
index 0000000..b66cc39
--- /dev/null
+++ b/srcs/ft_lstclear.c
@@ -0,0 +1,102 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_lstclear.c                                      :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 14:13:30 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/25 14:31:30 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+**	delete and free an element of the list and all the followings
+*/
+
+/*
+**	#include <libc.h>
+**
+**	typedef struct		s_list
+**	{
+**		void			*content;
+**		struct s_list	*next;
+**	}					t_list;
+**
+**	t_list	*ft_lstnew(void *content)
+**	{
+**		t_list		*lst;
+**
+**		if (!(lst = (t_list *)malloc(sizeof(*lst))))
+**			return (NULL);
+**		if (!content)
+**			lst->content = NULL;
+**		else
+**			lst->content = content;
+**		lst->next = NULL;
+**		return (lst);
+**	}
+**
+**	void	ft_lstadd_back(t_list **alst, t_list *new)
+**	{
+**		t_list	*tmp;
+**
+**		if (alst)
+**		{
+**			tmp = *alst;
+**			if (!tmp)
+**				*alst = new;
+**			else
+**			{
+**				while (tmp->next)
+**					tmp = tmp->next;
+**				tmp->next = new;
+**			}
+**			new->next = NULL;
+**		}
+**	}
+**
+**	void	ft_delete(void *element)
+**	{
+**		*(char*)element = '\0';
+**	}
+**
+**	void	ft_lstdelone(t_list *lst, void (*del)(void *))
+**	{
+**		del(lst->content);
+**		free(lst);
+**		lst = NULL;
+**	}
+**
+**	void	ft_lstclear(t_list **lst, void (*del)(void *));
+**
+**	int	main(void)
+**	{
+**		t_list	*toto;
+**		void	(ft_delete)(void*);
+**
+**		printf("sizeof(t_list)%lu\n",sizeof(t_list));
+**		toto = ft_lstnew("a");
+**		toto->next = ft_lstnew("b");
+**		toto->next->next = ft_lstnew("c");
+**		printf("toto->data          :%c\n",*(char*)(toto->content));
+**		printf("toto->nxt->data     :%c\n",*(char*)(toto->next->content));
+**		printf("toto->nxt->nxt->data:%c\n",*(char*)(toto->next->next->content));
+**		printf("toto->nxt->nxt->nxt :%s\n",(char*)(toto->next->next->next));
+**		ft_lstclear(&(toto->next), ft_delete);
+**		printf("----------------------\n");
+**		printf("toto->data          :%c\n",*(char*)(toto->content));
+**		printf("toto->nxt->data     :%c\n",*(char*)(toto->next->content));
+**		printf("toto->nxt->nxt      :%s\n",(char*)(toto->next->next));
+**		return (0);
+**	}
+*/
+
+#include "libft.h"
+
+void	ft_lstclear(t_list **lst, void (*del)(void *))
+{
+	if ((*lst)->next)
+		ft_lstclear(&(*lst)->next, del);
+	ft_lstdelone(*lst, del);
+}
diff --git a/srcs/ft_lstdelone.c b/srcs/ft_lstdelone.c
new file mode 100644
index 0000000..3ff3259
--- /dev/null
+++ b/srcs/ft_lstdelone.c
@@ -0,0 +1,96 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_lstdelone.c                                     :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 14:14:03 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/25 14:35:53 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+**	free an element and delete its content with del
+**	next is not free
+*/
+
+/*
+**	#include <libc.h>
+**
+**	typedef struct		s_list
+**	{
+**		void			*content;
+**		struct s_list	*next;
+**	}					t_list;
+**
+**	t_list	*ft_lstnew(void *content)
+**	{
+**		t_list		*lst;
+**
+**		if (!(lst = (t_list *)malloc(sizeof(*lst))))
+**			return (NULL);
+**		if (!content)
+**			lst->content = NULL;
+**		else
+**			lst->content = content;
+**		lst->next = NULL;
+**		return (lst);
+**	}
+**
+**	void	ft_lstadd_back(t_list **alst, t_list *new)
+**	{
+**		t_list	*tmp;
+**
+**		if (alst)
+**		{
+**			tmp = *alst;
+**			if (!tmp)
+**				*alst = new;
+**			else
+**			{
+**				while (tmp->next)
+**					tmp = tmp->next;
+**				tmp->next = new;
+**			}
+**			new->next = NULL;
+**		}
+**	}
+**
+**	void	ft_delete(void *element)
+**	{
+**		*(char*)element = '\0';
+**	}
+**
+**	void	ft_lstdelone(t_list *lst, void (*del)(void *));
+**
+**	int	main(void)
+**	{
+**		t_list	*toto;
+**		void	(ft_delete)(void*);
+**
+**		toto = ft_lstnew("a");
+**		toto->next = ft_lstnew("b");
+**		toto->next->next = ft_lstnew("c");
+**		printf("toto->data          :%c\n",*(char*)(toto->content));
+**		printf("toto->nxt->data     :%c\n",*(char*)(toto->next->content));
+**		printf("toto->nxt->nxt->data:%c\n",*(char*)(toto->next->next->content));
+**		printf("toto->nxt->nxt->nxt :%s\n",(char*)(toto->next->next->next));
+**		ft_lstdelone(toto->next, ft_delete);
+**		printf("----------------------\n");
+**		printf("toto->data          :%c\n",*(char*)(toto->content));
+**		printf("toto->nxt->data     :%c\n",*(char*)(toto->next->content));
+**		printf("toto->nxt->nxt->data:%c\n",*(char*)(toto->next->next->content));
+**		printf("toto->nxt->nxt->nxt :%s\n",(char*)(toto->next->next->next));
+**		return (0);
+**	}
+*/
+
+#include "libft.h"
+
+void	ft_lstdelone(t_list *lst, void (*del)(void *))
+{
+	del(lst->content);
+	free(lst);
+	lst = NULL;
+}
diff --git a/srcs/ft_lstiter.c b/srcs/ft_lstiter.c
new file mode 100644
index 0000000..52ab6ad
--- /dev/null
+++ b/srcs/ft_lstiter.c
@@ -0,0 +1,83 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_lstiter.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 14:14:11 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/25 14:34:59 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+**	go through all elements of the list and apply the function f to each of them
+*/
+
+/*
+**	#include <libc.h>
+**
+**	typedef struct		s_list
+**	{
+**		void			*content;
+**		struct s_list	*next;
+**	}					t_list;
+**
+**	t_list	*ft_lstnew(void *content)
+**	{
+**		t_list		*lst;
+**
+**		if (!(lst = (t_list *)malloc(sizeof(*lst))))
+**			return (NULL);
+**		if (!content)
+**			lst->content = NULL;
+**		else
+**			lst->content = content;
+**		lst->next = NULL;
+**		return (lst);
+**	}
+**
+**	void	ft_lstiter(t_list *lst, void (*f)(void*));
+**
+**	void	to_uppercase(void *element)
+**	{
+**		//	*(char*)(((t_list*)element)->content) -= 32;
+**		//	or :
+**		t_list	*tmp;
+**
+**		tmp = (t_list*)element;
+**		*(char*)(tmp->content) -= 32;
+**	}
+**
+**	int	main(void)
+**	{
+**		t_list	*toto;
+**		void	to_uppercase(void*);
+**
+**		toto = ft_lstnew("a");
+**		toto->next = ft_lstnew("b");
+**		toto->next->next = ft_lstnew("c");
+**		printf("toto->data          :%c\n",*(char*)(toto->content));
+**		printf("toto->nxt->data     :%c\n",*(char*)(toto->next->content));
+**		printf("toto->nxt->nxt->data:%c\n",*(char*)(toto->next->next->content));
+**		printf("toto->nxt->nxt->nxt :%s\n",(char*)(toto->next->next->next));
+**		printf("---------------------------\n");
+**		ft_lstiter(toto, to_uppercase);
+**		printf("toto->data          :%c\n",*(char*)(toto->content));
+**		printf("toto->nxt->data     :%c\n",*(char*)(toto->next->content));
+**		printf("toto->nxt->nxt->data:%c\n",*(char*)(toto->next->next->content));
+**		printf("toto->nxt->nxt->nxt :%s\n",(char*)(toto->next->next->next));
+**		return (0);
+**	}
+*/
+
+#include "libft.h"
+
+void	ft_lstiter(t_list *lst, void (*f)(void *))
+{
+	if (!lst)
+		return ;
+	if (lst->next)
+		ft_lstiter(lst->next, f);
+	f(lst);
+}
diff --git a/srcs/ft_lstlast.c b/srcs/ft_lstlast.c
new file mode 100644
index 0000000..630b66a
--- /dev/null
+++ b/srcs/ft_lstlast.c
@@ -0,0 +1,99 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_lstlast.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 14:14:49 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/25 14:30:20 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+**	return a pointer to the last element of a list
+*/
+
+/*
+**	#include <libc.h>
+**
+**	typedef struct		s_list
+**	{
+**		void			*content;
+**		struct s_list	*next;
+**	}					t_list;
+**
+**	void	*ft_memcpy(void *dst, const void *src, size_t n)
+**	{
+**		size_t	i;
+**		char	*ptr;
+**		char	*ptr2;
+**
+**		ptr = (char *)dst;
+**		ptr2 = (char *)src;
+**		i = -1;
+**		while (++i < n)
+**			ptr[i] = ptr2[i];
+**		return (dst);
+**	}
+**
+**	t_list	*ft_lstnew(void *content)
+**	{
+**		t_list		*lst;
+**
+**		if (!(lst = (t_list *)malloc(sizeof(*lst))))
+**			return (NULL);
+**		if (!content)
+**			lst->content = NULL;
+**		else
+**		{
+**			if (!(lst->content = malloc(sizeof(content))))
+**				return (NULL);
+**			ft_memcpy(lst->content, content, sizeof(content));
+**		}
+**		lst->next = NULL;
+**		return (lst);
+**	}
+**
+**	void	ft_lstadd_front(t_list **alst, t_list *new)
+**	{
+**		new->next = *alst;
+**		*alst = new;
+**	}
+**
+**	t_list	*ft_lstlast(t_list *lst);
+**
+**	int	main(void)
+**	{
+**		char	tresor;
+**		t_list	*toto;
+**		t_list	*tmp;
+**
+**		tresor = 'a';
+**		toto = ft_lstnew(&tresor);
+**		tresor = 'b';
+**		tmp = ft_lstnew(&tresor);
+**		ft_lstadd_front(&toto, tmp);
+**		tresor = 'c';
+**		tmp = ft_lstnew(&tresor);
+**		ft_lstadd_front(&toto, tmp);
+**		printf("toto->data          :%c\n",*(char*)(toto->content));
+**		printf("toto->nxt->data     :%c\n",*(char*)(toto->next->content));
+**		printf("toto->nxt->nxt->data:%c\n",*(char*)(toto->next->next->content));
+**		tmp = ft_lstlast(toto);
+**		printf("%c\n",*(char*)(tmp->content));
+**		printf("toto->data          :%c\n",*(char*)(toto->content));
+**		printf("toto->nxt->data     :%c\n",*(char*)(toto->next->content));
+**		printf("toto->nxt->nxt->data:%c\n",*(char*)(toto->next->next->content));
+**		return (0);
+**	}
+*/
+
+#include "libft.h"
+
+t_list	*ft_lstlast(t_list *lst)
+{
+	while (lst->next)
+		lst = lst->next;
+	return (lst);
+}
diff --git a/srcs/ft_lstmap.c b/srcs/ft_lstmap.c
new file mode 100644
index 0000000..26d9002
--- /dev/null
+++ b/srcs/ft_lstmap.c
@@ -0,0 +1,119 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_lstmap.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 14:15:42 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/25 14:34:19 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+**	iterate trhough linked list and apply to each element a function f
+**	if necessary the function del is used to delete an element
+*/
+
+/*
+**	#include <libc.h>
+**
+**	typedef struct		s_list
+**	{
+**		void			*content;
+**		struct s_list	*next;
+**	}					t_list;
+**
+**	t_list	*ft_lstnew(void *content)
+**	{
+**		t_list		*lst;
+**
+**		if (!(lst = (t_list *)malloc(sizeof(*lst))))
+**			return (NULL);
+**		if (!content)
+**			lst->content = NULL;
+**		else
+**			lst->content = content;
+**		lst->next = NULL;
+**		return (lst);
+**	}
+**
+**	void	ft_lstadd_back(t_list **alst, t_list *new)
+**	{
+**		t_list	*tmp;
+**
+**		if (alst)
+**		{
+**			tmp = *alst;
+**			if (!tmp)
+**				*alst = new;
+**			else
+**			{
+**				while (tmp->next)
+**					tmp = tmp->next;
+**				tmp->next = new;
+**			}
+**			new->next = NULL;
+**		}
+**	}
+**
+**	void	*to_uppercase(void *element)
+**	{
+**		*(char*)(((t_list*)element)->content) -= 32;
+**		return (element);
+**	}
+**
+**	void	ft_delete(void *element)
+**	{
+**		*(char*)element = '\0';
+**	}
+**
+**	t_list	*ft_lstmap(t_list *lst, void *(*f)(void *), void (*del)(void *));
+**
+**	int	main(void)
+**	{
+**		t_list	*toto;
+**		void	*(to_uppercase)(void *);
+**		void	(ft_delete)(void*);
+**
+**		toto = ft_lstnew("a");
+**		toto->next = ft_lstnew("b");
+**		toto->next->next = ft_lstnew("c");
+**		printf("toto->data          :%c\n",*(char*)(toto->content));
+**		printf("toto->nxt->data     :%c\n",*(char*)(toto->next->content));
+**		printf("toto->nxt->nxt->data:%c\n",*(char*)(toto->next->next->content));
+**		printf("toto->nxt->nxt->nxt :%s\n",(char*)(toto->next->next->next));
+**		ft_lstmap(toto->next, to_uppercase, ft_delete);
+**		printf("----------------------\n");
+**		printf("toto->data          :%c\n",*(char*)(toto->content));
+**		printf("toto->nxt->data     :%c\n",*(char*)(toto->next->content));
+**		printf("toto->nxt->nxt->data:%c\n",*(char*)(toto->next->next->content));
+**		printf("toto->nxt->nxt->nxt :%s\n",(char*)(toto->next->next->next));
+**		return (0);
+**	}
+*/
+
+#include "libft.h"
+
+t_list		*ft_lstmap(t_list *lst, void *(*f)(void *), void (*del)(void *))
+{
+	t_list		*new;
+	t_list		*tmp;
+
+	if (!lst)
+		return (NULL);
+	tmp = (t_list*)f(lst);
+	new = tmp;
+	while (lst->next)
+	{
+		lst = lst->next;
+		if (!(tmp->next = (t_list*)f(lst)))
+		{
+			del(tmp->next->content);
+			free(tmp->next);
+			return (NULL);
+		}
+		tmp = tmp->next;
+	}
+	return (new);
+}
diff --git a/srcs/ft_lstnew.c b/srcs/ft_lstnew.c
new file mode 100644
index 0000000..401f6c9
--- /dev/null
+++ b/srcs/ft_lstnew.c
@@ -0,0 +1,59 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_lstnew.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 14:16:20 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/25 14:29:46 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+**	create a new list
+*/
+
+/*
+**	#include <libc.h>
+**
+**	typedef struct		s_list
+**	{
+**		void			*content;
+**		struct s_list	*next;
+**	}					t_list;
+**
+**	t_list	*ft_lstnew(void *content);
+**
+**	int	main(void)
+**	{
+**		char	tresor;
+**		t_list	*toto;
+**
+**		tresor = 'd';
+**		printf("tresor                : %c\n",tresor);
+**		toto = ft_lstnew(&tresor);
+**		//toto->content was alocated as void* so it need cast
+**		printf("toto->content         : %c\n",*(char*)(toto->content));
+**		tresor = 'D';
+**		printf("transform tresor      : %c\n",tresor);
+**		printf("and also toto->content: %c\n",*(char*)(toto->content));
+**		return (0);
+**	}
+*/
+
+#include "libft.h"
+
+t_list	*ft_lstnew(void *content)
+{
+	t_list		*lst;
+
+	if (!(lst = (t_list *)malloc(sizeof(*lst))))
+		return (NULL);
+	if (!content)
+		lst->content = NULL;
+	else
+		lst->content = content;
+	lst->next = NULL;
+	return (lst);
+}
diff --git a/srcs/ft_lstsize.c b/srcs/ft_lstsize.c
new file mode 100644
index 0000000..5ff5f2d
--- /dev/null
+++ b/srcs/ft_lstsize.c
@@ -0,0 +1,86 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_lstsize.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 14:31:48 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/25 16:06:41 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+**	return the size of the linked list
+*/
+
+/*
+**	#include <libc.h>
+**
+**	typedef struct		s_list
+**	{
+**		void			*content;
+**		struct s_list	*next;
+**	}					t_list;
+**
+**	t_list	*ft_lstnew(void *content)
+**	{
+**		t_list		*lst;
+**
+**		if (!(lst = (t_list *)malloc(sizeof(*lst))))
+**			return (NULL);
+**		if (!content)
+**			lst->content = NULL;
+**		else
+**			lst->content = content;
+**		lst->next = NULL;
+**		return (lst);
+**	}
+**
+**	void	ft_lstadd_front(t_list **alst, t_list *new)
+**	{
+**		new->next = *alst;
+**		*alst = new;
+**	}
+**
+**	int		ft_lstsize(t_list *lst);
+**
+**	int	main(void)
+**	{
+**		char	tresor;
+**		t_list	*toto;
+**		t_list	*tmp;
+**
+**		tresor = 'a';
+**		toto = ft_lstnew(&tresor);
+**		tresor = 'b';
+**		tmp = ft_lstnew(&tresor);
+**		ft_lstadd_front(&toto, tmp);
+**		tresor = 'c';
+**		tmp = ft_lstnew(&tresor);
+**		ft_lstadd_front(&toto, tmp);
+**		printf("toto->data          :%c\n",*(char*)(toto->content));
+**		printf("toto->nxt->data     :%c\n",*(char*)(toto->next->content));
+**		printf("toto->nxt->nxt->dqta:%c\n",*(char*)(toto->next->next->content));
+**		printf("%i\n",ft_lstsize(toto));
+**		printf("toto->data          :%c\n",*(char*)(toto->content));
+**		printf("toto->nxt->data     :%c\n",*(char*)(toto->next->content));
+**		printf("toto->nxt->nxt->dqta:%c\n",*(char*)(toto->next->next->content));
+**		return (0);
+**	}
+*/
+
+#include "libft.h"
+
+int		ft_lstsize(t_list *lst)
+{
+	int	size;
+
+	size = 0;
+	while (lst)
+	{
+		size++;
+		lst = lst->next;
+	}
+	return (size);
+}
diff --git a/srcs/ft_memalloc.c b/srcs/ft_memalloc.c
new file mode 100644
index 0000000..072e7f1
--- /dev/null
+++ b/srcs/ft_memalloc.c
@@ -0,0 +1,27 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_memalloc.c                                      :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/19 15:21:44 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/19 15:23:17 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+** allocate size byte of memory and return a pointer to the allocated memory
+*/
+
+#include "libft.h"
+
+void	*ft_memalloc(size_t size)
+{
+	void	*tmp;
+
+	if (!size || !(tmp = malloc(size)))
+		return (NULL);
+	ft_bzero(tmp, size);
+	return (tmp);
+}
diff --git a/srcs/ft_memccpy.c b/srcs/ft_memccpy.c
new file mode 100644
index 0000000..fee3c2f
--- /dev/null
+++ b/srcs/ft_memccpy.c
@@ -0,0 +1,36 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_memccpy.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 15:24:51 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/25 15:25:09 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+**	copy string until character is found and place cursor in dst
+**	after last byte copied
+*/
+
+#include "libft.h"
+
+void	*ft_memccpy(void *dst, const void *src, int c, size_t n)
+{
+	unsigned char	*dest;
+	unsigned char	*sourc;
+	size_t			i;
+
+	i = -1;
+	dest = (unsigned char *)dst;
+	sourc = (unsigned char *)src;
+	while (++i < n)
+	{
+		dest[i] = sourc[i];
+		if (sourc[i] == (unsigned char)c)
+			return (dst + i + 1);
+	}
+	return (NULL);
+}
diff --git a/srcs/ft_memchr.c b/srcs/ft_memchr.c
new file mode 100644
index 0000000..ab61ff4
--- /dev/null
+++ b/srcs/ft_memchr.c
@@ -0,0 +1,30 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_memchr.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 13:55:51 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/25 13:55:54 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+** locate character in string and return its position
+*/
+
+#include "libft.h"
+
+void	*ft_memchr(const void *s, int c, size_t n)
+{
+	unsigned char	*sbis;
+	size_t			i;
+
+	sbis = (unsigned char *)s;
+	i = -1;
+	while (++i < n)
+		if (sbis[i] == (unsigned char)c)
+			return ((void *)sbis + i);
+	return (NULL);
+}
diff --git a/srcs/ft_memcmp.c b/srcs/ft_memcmp.c
new file mode 100644
index 0000000..c05a028
--- /dev/null
+++ b/srcs/ft_memcmp.c
@@ -0,0 +1,32 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_memcmp.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 13:56:05 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/25 13:56:07 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+** compare two bytes strings (doesnt recognize a null terminated string)
+** and return value of difference between first two different character
+*/
+
+#include "libft.h"
+
+int		ft_memcmp(const void *s1, const void *s2, size_t n)
+{
+	unsigned char	*frst;
+	unsigned char	*scnd;
+	size_t			i;
+
+	i = 0;
+	frst = (unsigned char *)s1;
+	scnd = (unsigned char *)s2;
+	while (i < n && frst[i] == scnd[i])
+		i++;
+	return ((i == n) ? 0 : frst[i] - scnd[i]);
+}
diff --git a/srcs/ft_memcpy.c b/srcs/ft_memcpy.c
new file mode 100644
index 0000000..8b869fb
--- /dev/null
+++ b/srcs/ft_memcpy.c
@@ -0,0 +1,50 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_memcpy.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 13:56:16 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/28 13:45:23 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+** copy n characters from src to dst and return dst
+*/
+
+/*
+**	#include <libc.h>
+**
+**	void	*ft_memcpy(void *dst, const void *src, size_t n);
+**
+**	int		main(int ac, char **av)
+**	{
+**		if (ac == 4)
+**		{
+**			printf("%s\n", ft_memcpy(av[1], av[2], atoi(av[3])));
+**		}
+**		else
+**		{
+**			printf("%s\n", ft_memcpy("troubadour", "bravo", 4));
+**		}
+**		return (0);
+**	}
+*/
+
+#include "libft.h"
+
+void	*ft_memcpy(void *dst, const void *src, size_t n)
+{
+	char	*ptr;
+	char	*ptr2;
+
+	ptr = (char *)dst;
+	ptr2 = (char *)src;
+	if (dst == src)
+		return (dst);
+	while (n--)
+		ptr[n] = ptr2[n];
+	return (dst);
+}
diff --git a/srcs/ft_memdel.c b/srcs/ft_memdel.c
new file mode 100644
index 0000000..f057043
--- /dev/null
+++ b/srcs/ft_memdel.c
@@ -0,0 +1,26 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_memdel.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2018/11/14 21:13:26 by hulamy            #+#    #+#             */
+/*   Updated: 2019/04/03 15:44:12 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+** free memory
+*/
+
+#include "libft.h"
+
+void	ft_memdel(void **ap)
+{
+	if (ap && *ap)
+	{
+		free(*ap);
+		*ap = 0;
+	}
+}
diff --git a/srcs/ft_memmove.c b/srcs/ft_memmove.c
new file mode 100644
index 0000000..5ff017c
--- /dev/null
+++ b/srcs/ft_memmove.c
@@ -0,0 +1,35 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_memmove.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 13:56:25 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/25 13:56:29 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+** copy n characters from src to dst in a non destructive way and return dst
+*/
+
+#include "libft.h"
+
+void	*ft_memmove(void *dst, const void *src, size_t len)
+{
+	int		i;
+	char	*source;
+	char	*dest;
+
+	i = -1;
+	source = (char *)src;
+	dest = (char *)dst;
+	if (source < dest)
+		while ((int)(--len) >= 0)
+			dest[len] = source[len];
+	else
+		while (++i < (int)len)
+			dest[i] = source[i];
+	return (dst);
+}
diff --git a/srcs/ft_memset.c b/srcs/ft_memset.c
new file mode 100644
index 0000000..10c2d7c
--- /dev/null
+++ b/srcs/ft_memset.c
@@ -0,0 +1,29 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_memset.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 13:56:37 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/25 13:56:38 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+** copy n time a character in a string and return the string
+*/
+
+#include "libft.h"
+
+void	*ft_memset(void *b, int c, size_t len)
+{
+	char	*ptr;
+	size_t	i;
+
+	ptr = (char *)b;
+	i = 0;
+	while (i < len)
+		ptr[i++] = c;
+	return (b);
+}
diff --git a/srcs/ft_putchar.c b/srcs/ft_putchar.c
new file mode 100644
index 0000000..b0aa9cb
--- /dev/null
+++ b/srcs/ft_putchar.c
@@ -0,0 +1,18 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_putchar.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2018/11/14 21:14:00 by hulamy            #+#    #+#             */
+/*   Updated: 2018/11/14 21:14:01 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	ft_putchar(char c)
+{
+	write(1, &c, 1);
+}
diff --git a/srcs/ft_putchar_fd.c b/srcs/ft_putchar_fd.c
new file mode 100644
index 0000000..a48c1d5
--- /dev/null
+++ b/srcs/ft_putchar_fd.c
@@ -0,0 +1,18 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_putchar_fd.c                                    :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 13:59:40 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/25 13:59:42 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	ft_putchar_fd(char c, int fd)
+{
+	write(fd, &c, 1);
+}
diff --git a/srcs/ft_putendl.c b/srcs/ft_putendl.c
new file mode 100644
index 0000000..c1d9a6a
--- /dev/null
+++ b/srcs/ft_putendl.c
@@ -0,0 +1,19 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_putendl.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2018/11/14 21:14:32 by hulamy            #+#    #+#             */
+/*   Updated: 2018/11/14 21:14:33 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	ft_putendl(char const *s)
+{
+	ft_putstr(s);
+	ft_putchar('\n');
+}
diff --git a/srcs/ft_putendl_fd.c b/srcs/ft_putendl_fd.c
new file mode 100644
index 0000000..5a0ef44
--- /dev/null
+++ b/srcs/ft_putendl_fd.c
@@ -0,0 +1,23 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_putendl_fd.c                                    :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 13:59:47 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/25 13:59:48 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+**	write the string s on the given file descriptor fd, followed by a newline
+*/
+
+#include "libft.h"
+
+void	ft_putendl_fd(char *s, int fd)
+{
+	ft_putstr_fd(s, fd);
+	ft_putchar_fd('\n', fd);
+}
diff --git a/srcs/ft_putnbr.c b/srcs/ft_putnbr.c
new file mode 100644
index 0000000..bb8e2d7
--- /dev/null
+++ b/srcs/ft_putnbr.c
@@ -0,0 +1,18 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_putnbr.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2018/11/14 21:14:57 by hulamy            #+#    #+#             */
+/*   Updated: 2018/11/14 21:14:58 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	ft_putnbr(int n)
+{
+	ft_putnbr_fd(n, 1);
+}
diff --git a/srcs/ft_putnbr_fd.c b/srcs/ft_putnbr_fd.c
new file mode 100644
index 0000000..afc9e85
--- /dev/null
+++ b/srcs/ft_putnbr_fd.c
@@ -0,0 +1,28 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_putnbr_fd.c                                     :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 13:59:56 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/25 13:59:57 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	ft_putnbr_fd(int n, int fd)
+{
+	long	l;
+
+	l = n;
+	if (l < 0)
+	{
+		ft_putchar_fd('-', fd);
+		l *= -1;
+	}
+	if (l >= 10)
+		ft_putnbr_fd(l / 10, fd);
+	ft_putchar_fd((l % 10) + '0', fd);
+}
diff --git a/srcs/ft_putnbrbase.c b/srcs/ft_putnbrbase.c
new file mode 100644
index 0000000..bf0d627
--- /dev/null
+++ b/srcs/ft_putnbrbase.c
@@ -0,0 +1,59 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_putnbrbase.c                                    :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2018/11/16 15:17:00 by hulamy            #+#    #+#             */
+/*   Updated: 2018/11/16 15:23:43 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+static int	check(char *base)
+{
+	int i;
+	int j;
+
+	i = 0;
+	while (base[i])
+	{
+		j = i + 1;
+		while (base[j])
+		{
+			if (base[i] == base[j])
+				return (0);
+			j++;
+		}
+		if (base[i] == '-' || base[i] == '+')
+			return (0);
+		i++;
+	}
+	if (i >= 2)
+		return (1);
+	return (0);
+}
+
+void		ft_putnbrbase(int nbr, char *base)
+{
+	int		i;
+	long	n;
+
+	i = 0;
+	n = nbr;
+	if (check(base))
+	{
+		if (n < 0)
+		{
+			ft_putchar('-');
+			n = -n;
+		}
+		while (base[i])
+			i++;
+		if (n >= i)
+			ft_putnbrbase(n / i, base);
+		ft_putchar(base[n % i]);
+	}
+}
diff --git a/srcs/ft_putnbrendl.c b/srcs/ft_putnbrendl.c
new file mode 100644
index 0000000..ddd05f6
--- /dev/null
+++ b/srcs/ft_putnbrendl.c
@@ -0,0 +1,18 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_putnbrendl.c                                    :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/02/19 10:38:07 by hulamy            #+#    #+#             */
+/*   Updated: 2019/02/19 10:42:46 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	ft_putnbrendl(int n)
+{
+	ft_putnbrendl_fd(n, 1);
+}
diff --git a/srcs/ft_putnbrendl_fd.c b/srcs/ft_putnbrendl_fd.c
new file mode 100644
index 0000000..266dc55
--- /dev/null
+++ b/srcs/ft_putnbrendl_fd.c
@@ -0,0 +1,29 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_putnbrendl_fd.c                                 :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/02/19 10:37:58 by hulamy            #+#    #+#             */
+/*   Updated: 2019/02/19 10:42:48 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	ft_putnbrendl_fd(int n, int fd)
+{
+	long	l;
+
+	l = n;
+	if (l < 0)
+	{
+		ft_putchar_fd('-', fd);
+		l *= -1;
+	}
+	if (l >= 10)
+		ft_putnbr_fd(l / 10, fd);
+	ft_putchar_fd((l % 10) + '0', fd);
+	ft_putchar_fd('\n', fd);
+}
diff --git a/srcs/ft_putstr.c b/srcs/ft_putstr.c
new file mode 100644
index 0000000..78617eb
--- /dev/null
+++ b/srcs/ft_putstr.c
@@ -0,0 +1,22 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_putstr.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2018/11/14 21:15:19 by hulamy            #+#    #+#             */
+/*   Updated: 2018/11/14 21:15:19 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	ft_putstr(char const *s)
+{
+	int i;
+
+	i = 0;
+	while (s && s[i])
+		ft_putchar(s[i++]);
+}
diff --git a/srcs/ft_putstr_fd.c b/srcs/ft_putstr_fd.c
new file mode 100644
index 0000000..cf6ad12
--- /dev/null
+++ b/srcs/ft_putstr_fd.c
@@ -0,0 +1,23 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_putstr_fd.c                                     :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 14:00:04 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/25 14:00:05 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+**	write the string s on the given file descritor fd
+*/
+
+#include "libft.h"
+
+void	ft_putstr_fd(char *s, int fd)
+{
+	while (s && *s)
+		ft_putchar_fd(*s++, fd);
+}
diff --git a/srcs/ft_split.c b/srcs/ft_split.c
new file mode 100644
index 0000000..8f8dab5
--- /dev/null
+++ b/srcs/ft_split.c
@@ -0,0 +1,123 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_split.c                                         :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 14:00:13 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/27 21:35:21 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+** return an array of string with each word found in str, with c as separator
+*/
+
+/*
+**	#include <libc.h>
+**
+**	size_t		ft_strlen(const char *str)
+**	{
+**		size_t i;
+**
+**		i = 0;
+**		while (str[i])
+**			i++;
+**		return (i);
+**	}
+**
+**	char	*ft_substr(char const *s, unsigned int start, size_t len)
+**	{
+**		char	*str;
+**		size_t	i;
+**
+**		if (!s)
+**			return (NULL);
+**		if (ft_strlen(s) < start)
+**			return ("");
+**		if (!(str = (char *)malloc(sizeof(char) * (len + 1))))
+**			return (NULL);
+**		i = 0;
+**		while (i < len && s[start])
+**			str[i++] = s[start++];
+**		str[i] = '\0';
+**		return (str);
+**	}
+**
+**	char		**ft_split(char const *s, char c);
+**
+**	int		main(int ac, char **av)
+**	//int		main(void)
+**	{
+**		char	**str;
+**		int		i;
+**
+**		char	*s;
+**		char	c;
+**
+**		if  (ac == 3)
+**		{
+**			i = 0;
+**			s = av[1];
+**	//		s = "lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed non risus. Suspendisse";
+**			c = av[2][0];
+**	//		c = ' ';
+**			str = ft_split(s, c);
+**			while (str[i])
+**				printf("%s\n", str[i++]);
+**		}
+**		return (0);
+**	}
+*/
+
+#include "libft.h"
+
+static int	ft_count_word(char const *s, char c)
+{
+	int		i;
+	int		words;
+
+	i = 0;
+	words = 0;
+	while (s[i])
+	{
+		if (s[i] != c)
+		{
+			words++;
+			while (s[i] && s[i] != c)
+				i++;
+		}
+		else
+			i++;
+	}
+	return (words);
+}
+
+char		**ft_split(char const *s, char c)
+{
+	char	**array;
+	int		i;
+	int		j;
+	int		len;
+
+	i = -1;
+	j = 0;
+	if (!s || !c)
+		return (NULL);
+	if (!(array = (char **)malloc(sizeof(char *) * (ft_count_word(s, c) + 1))))
+		return (NULL);
+	while (s[++i])
+	{
+		if (s[i] != c)
+		{
+			len = 0;
+			while (s[i + len] && s[i + len] != c)
+				len++;
+			array[j++] = ft_substr(s, i, len);
+			i = i + len - 1;
+		}
+	}
+	array[j] = 0;
+	return (array);
+}
diff --git a/srcs/ft_strcat.c b/srcs/ft_strcat.c
new file mode 100644
index 0000000..d78543c
--- /dev/null
+++ b/srcs/ft_strcat.c
@@ -0,0 +1,32 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strcat.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2018/11/14 21:15:40 by hulamy            #+#    #+#             */
+/*   Updated: 2019/03/25 15:12:58 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+** append src to dest (dest must have sufficient space) and return dest
+*/
+
+#include "libft.h"
+
+char	*ft_strcat(char *dest, const char *src)
+{
+	int i;
+	int j;
+
+	i = 0;
+	j = 0;
+	while (dest[i])
+		i++;
+	while (src[j])
+		dest[i++] = src[j++];
+	dest[i] = '\0';
+	return (dest);
+}
diff --git a/srcs/ft_strchr.c b/srcs/ft_strchr.c
new file mode 100644
index 0000000..b220565
--- /dev/null
+++ b/srcs/ft_strchr.c
@@ -0,0 +1,33 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strchr.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 13:56:46 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/25 13:56:47 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+** locate the first occurence of character c in string s
+** and return pointer to its location
+*/
+
+#include "libft.h"
+
+char	*ft_strchr(const char *s, int c)
+{
+	int	i;
+	int	j;
+
+	i = 0;
+	j = -1;
+	while (s[i])
+		i++;
+	while (++j < i + 1)
+		if (s[j] == c)
+			return ((char *)s + j);
+	return (NULL);
+}
diff --git a/srcs/ft_strclr.c b/srcs/ft_strclr.c
new file mode 100644
index 0000000..5e3952c
--- /dev/null
+++ b/srcs/ft_strclr.c
@@ -0,0 +1,23 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strclr.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2018/11/14 21:15:58 by hulamy            #+#    #+#             */
+/*   Updated: 2019/03/25 15:17:42 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+** fill string with zeros
+*/
+
+#include "libft.h"
+
+void	ft_strclr(char *s)
+{
+	if (s)
+		ft_bzero(s, ft_strlen(s));
+}
diff --git a/srcs/ft_strcmp.c b/srcs/ft_strcmp.c
new file mode 100644
index 0000000..f6603c3
--- /dev/null
+++ b/srcs/ft_strcmp.c
@@ -0,0 +1,28 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strcmp.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2018/11/14 21:16:08 by hulamy            #+#    #+#             */
+/*   Updated: 2019/03/25 15:18:30 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+** compare two null terminated strings and return value
+** of difference between first two different character
+*/
+
+#include "libft.h"
+
+int		ft_strcmp(const char *s1, const char *s2)
+{
+	int	i;
+
+	i = 0;
+	while (s1[i] && s1[i] == s2[i])
+		i++;
+	return ((unsigned char)s1[i] - (unsigned char)s2[i]);
+}
diff --git a/srcs/ft_strcpy.c b/srcs/ft_strcpy.c
new file mode 100644
index 0000000..7d2a45b
--- /dev/null
+++ b/srcs/ft_strcpy.c
@@ -0,0 +1,28 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strcpy.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2018/11/14 21:16:17 by hulamy            #+#    #+#             */
+/*   Updated: 2019/03/25 15:19:19 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+** copy string src to dst including '\0' and return dst
+*/
+
+#include "libft.h"
+
+char	*ft_strcpy(char *dest, const char *src)
+{
+	int i;
+
+	i = -1;
+	while (src[++i])
+		dest[i] = src[i];
+	dest[i] = '\0';
+	return (dest);
+}
diff --git a/srcs/ft_strdel.c b/srcs/ft_strdel.c
new file mode 100644
index 0000000..82cbc2e
--- /dev/null
+++ b/srcs/ft_strdel.c
@@ -0,0 +1,26 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strdel.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2018/11/14 21:16:25 by hulamy            #+#    #+#             */
+/*   Updated: 2019/03/25 15:19:54 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+** free memory
+*/
+
+#include "libft.h"
+
+void	ft_strdel(char **as)
+{
+	if (as && *as)
+	{
+		free(*as);
+		*as = 0;
+	}
+}
diff --git a/srcs/ft_strdup.c b/srcs/ft_strdup.c
new file mode 100644
index 0000000..b917ac9
--- /dev/null
+++ b/srcs/ft_strdup.c
@@ -0,0 +1,32 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strdup.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 13:56:54 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/25 13:56:55 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+** save a copy of string src by allocating memory and return pointer to copy
+*/
+
+#include "libft.h"
+
+char	*ft_strdup(const char *src)
+{
+	int		i;
+	char	*str;
+
+	i = 0;
+	while (src[i] != '\0')
+		i++;
+	if (!(str = (char*)malloc(sizeof(*str) * (i + 1))))
+		return (NULL);
+	while (i-- >= 0)
+		str[i + 1] = src[i + 1];
+	return (str);
+}
diff --git a/srcs/ft_strequ.c b/srcs/ft_strequ.c
new file mode 100644
index 0000000..fa4d4e4
--- /dev/null
+++ b/srcs/ft_strequ.c
@@ -0,0 +1,24 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strequ.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2018/11/14 21:16:44 by hulamy            #+#    #+#             */
+/*   Updated: 2019/03/25 15:21:02 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+** return 0 if strings s1 and s2 are identical and 1 if not
+*/
+
+#include "libft.h"
+
+int		ft_strequ(char const *s1, char const *s2)
+{
+	if (!s1 || !s2)
+		return (0);
+	return (ft_strcmp(s1, s2) == 0);
+}
diff --git a/srcs/ft_striter.c b/srcs/ft_striter.c
new file mode 100644
index 0000000..9d3b21f
--- /dev/null
+++ b/srcs/ft_striter.c
@@ -0,0 +1,23 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_striter.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2018/11/14 21:16:53 by hulamy            #+#    #+#             */
+/*   Updated: 2019/03/25 15:21:14 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+** apply function f to each element of string s
+*/
+
+#include "libft.h"
+
+void	ft_striter(char *s, void (*f)(char *))
+{
+	while (s && *s && f)
+		f(s++);
+}
diff --git a/srcs/ft_striteri.c b/srcs/ft_striteri.c
new file mode 100644
index 0000000..60fd7f6
--- /dev/null
+++ b/srcs/ft_striteri.c
@@ -0,0 +1,26 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_striteri.c                                      :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2018/11/14 21:17:04 by hulamy            #+#    #+#             */
+/*   Updated: 2019/03/25 15:21:27 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+** apply function f to each element of string s with index specified
+*/
+
+#include "libft.h"
+
+void	ft_striteri(char *s, void (*f)(unsigned int, char *))
+{
+	int		i;
+
+	i = 0;
+	while (s && *s && f)
+		f(i++, s++);
+}
diff --git a/srcs/ft_strjoin.c b/srcs/ft_strjoin.c
new file mode 100644
index 0000000..a325582
--- /dev/null
+++ b/srcs/ft_strjoin.c
@@ -0,0 +1,54 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strjoin.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 14:01:26 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/25 14:01:34 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+** create a new string by concatenating the two strings s1 and s2
+*/
+
+#include "libft.h"
+
+static char	*ft_doit(char const *s1, char const *s2, char *dest)
+{
+	int	j;
+	int	i;
+
+	j = 0;
+	i = 0;
+	while (s1[j] != '\0')
+	{
+		dest[i] = s1[j];
+		i++;
+		j++;
+	}
+	j = 0;
+	while (s2[j] != '\0')
+	{
+		dest[i] = s2[j];
+		i++;
+		j++;
+	}
+	dest[i] = '\0';
+	return (dest);
+}
+
+char		*ft_strjoin(char const *s1, char const *s2)
+{
+	char	*str;
+
+	if (!s1 || !s2)
+		return (NULL);
+	if (!(str = (char *)malloc(sizeof(char) *
+					(ft_strlen(s1) + ft_strlen(s2) + 1))))
+		return (NULL);
+	str = ft_doit(s1, s2, str);
+	return (str);
+}
diff --git a/srcs/ft_strjoinfree.c b/srcs/ft_strjoinfree.c
new file mode 100644
index 0000000..8e0247b
--- /dev/null
+++ b/srcs/ft_strjoinfree.c
@@ -0,0 +1,28 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strjoinfree.c                                   :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/03/05 15:05:28 by hulamy            #+#    #+#             */
+/*   Updated: 2019/03/25 15:22:28 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+** create a new string by concatenating the two strings s1
+** and s2 then freeing them
+*/
+
+#include "libft.h"
+
+char	*ft_strjoinfree(char *s1, char *s2)
+{
+	char	*str;
+
+	if (!(str = ft_strjoin(s1, s2)))
+		return (NULL);
+	free(s1);
+	return (str);
+}
diff --git a/srcs/ft_strlcat.c b/srcs/ft_strlcat.c
new file mode 100644
index 0000000..91d14d8
--- /dev/null
+++ b/srcs/ft_strlcat.c
@@ -0,0 +1,108 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strlcat.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 13:57:02 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/25 14:23:18 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+**	append src to sized dest and return size of final dest
+*/
+
+/*
+**	#include <libc.h>
+**
+**	size_t	ft_strlcat(char *dest, const char *src, size_t size);
+**
+**	size_t ft_strlcat2(char *dest, char *src, size_t size);
+**
+**	int ft_strlen(char *str)
+**	{
+**		int i;
+**
+**		i = 0;
+**		while (str[i])
+**			i++;
+**		return (i);
+**	}
+**
+**	int		main(int ac, char **av)
+**	{
+**		char tmp1[100];
+**		char tmp2[100];
+**		int i;
+**
+**		i = atoi(av[3]);
+**		strcpy(tmp1, av[1]);
+**		strcpy(tmp2, av[2]);
+**
+**		if (ac == 4)
+**		{
+**			printf("----strlcat: %zu - %s - %s\n", strlcat(tmp1, tmp2, i),
+**																tmp1, tmp2);
+**
+**			strcpy(tmp1, av[1]);
+**			strcpy(tmp2, av[2]);
+**
+**			printf("-ft_strlcat: %zu - %s - %s\n", ft_strlcat(tmp1, tmp2, i),
+**																tmp1, tmp2);
+**
+**			strcpy(tmp1, av[1]);
+**			strcpy(tmp2, av[2]);
+**
+**			printf("ft_strlcat2: %zu - %s - %s\n", ft_strlcat2(tmp1, tmp2, i),
+**																tmp1, tmp2);
+**		}
+**	}
+**
+**	size_t ft_strlcat2(char *dest, char *src, size_t size)
+**	{
+**		size_t i;
+**		size_t dest_length;
+**		size_t src_length;
+**
+**		i = 0;
+**		dest_length = ft_strlen(dest);
+**		src_length = ft_strlen(src);
+**		if (size > dest_length + 1)
+**		{
+**			while (i < (size - dest_length - 1))
+**			{
+**				dest[i + dest_length] = src[i];
+**				i++;
+**			}
+**			dest[dest_length + i] = '\0';
+**		}
+**		if (size >= dest_length)
+**			return (dest_length + src_length);
+**		return (src_length + size);
+**	}
+*/
+
+#include "libft.h"
+
+size_t		ft_strlcat(char *dest, const char *src, size_t size)
+{
+	size_t i;
+	size_t j;
+
+	i = 0;
+	j = 0;
+	while (dest[i] && i < size)
+		i++;
+	while (src[j])
+	{
+		if (j + i < size - 1 && size)
+		{
+			dest[i + j] = src[j];
+			dest[i + j + 1] = '\0';
+		}
+		j++;
+	}
+	return (i + j);
+}
diff --git a/srcs/ft_strlcpy.c b/srcs/ft_strlcpy.c
new file mode 100644
index 0000000..9b33a47
--- /dev/null
+++ b/srcs/ft_strlcpy.c
@@ -0,0 +1,66 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strlcpy.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 13:57:19 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/25 15:53:19 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+**	copy size - 1 length of src into dest,
+**	terminate it with a '\0'
+**	and return size of src
+*/
+
+/*
+**	#include <libc.h>
+**
+**	size_t	ft_strlcpy(char *dest, const char *src, size_t size);
+**
+**	int		main(int argc, char **argv)
+**	{
+**		char str[100];
+**		int i;
+**		unsigned int u;
+**		unsigned int v;
+**
+**		i = atoi(argv[3]);
+**		strcpy(str, argv[2]);
+**		if (argc > 3)
+**		{
+**			u = strlcpy(argv[2], argv[1], i);
+**			printf("strlcpy   : %s - %s - %d",argv[1], argv[2], i);
+**			printf(" - return:%d\n",u);
+**			strcpy(argv[2], str);
+**			printf("(re-init  : %s - %s - %d)\n",argv[1], argv[2], i);
+**			v = ft_strlcpy(argv[2], argv[1], i);
+**			printf("ft_strlcpy: %s - %s - %d",argv[1], argv[2], i);
+**			printf(" - return:%d\n",v);
+**		}
+**		return (0);
+**	}
+*/
+
+#include "libft.h"
+
+size_t	ft_strlcpy(char *dest, const char *src, size_t size)
+{
+	size_t i;
+	size_t j;
+
+	i = 0;
+	j = 0;
+	while (src[i] != '\0')
+	{
+		if (i + 1 < size)
+			dest[i] = src[j++];
+		i++;
+	}
+	if (size > 0)
+		dest[j] = '\0';
+	return (i);
+}
diff --git a/srcs/ft_strlen.c b/srcs/ft_strlen.c
new file mode 100644
index 0000000..8af143b
--- /dev/null
+++ b/srcs/ft_strlen.c
@@ -0,0 +1,27 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strlen.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 13:57:48 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/25 13:57:49 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+** return length of of string
+*/
+
+#include "libft.h"
+
+size_t		ft_strlen(const char *str)
+{
+	size_t i;
+
+	i = 0;
+	while (str[i])
+		i++;
+	return (i);
+}
diff --git a/srcs/ft_strmap.c b/srcs/ft_strmap.c
new file mode 100644
index 0000000..ef82f97
--- /dev/null
+++ b/srcs/ft_strmap.c
@@ -0,0 +1,32 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strmap.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2018/11/14 21:17:49 by hulamy            #+#    #+#             */
+/*   Updated: 2019/03/25 15:23:12 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+** create a new array with the result of function f on every element of s
+*/
+
+#include "libft.h"
+
+char	*ft_strmap(char const *s, char (*f)(char))
+{
+	char	*str;
+	int		i;
+
+	if (!s)
+		return (NULL);
+	if (!(str = ft_strnew(ft_strlen(s))))
+		return (NULL);
+	i = -1;
+	while (s[++i])
+		str[i] = f(s[i]);
+	return (str);
+}
diff --git a/srcs/ft_strmapi.c b/srcs/ft_strmapi.c
new file mode 100644
index 0000000..16060f2
--- /dev/null
+++ b/srcs/ft_strmapi.c
@@ -0,0 +1,72 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strmapi.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 14:01:40 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/25 14:19:43 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+**	create a new array with the result of function f on every element of
+**	s by index i
+*/
+
+/*
+**	#include <libc.h>
+**
+**	size_t		ft_strlen(const char *str)
+**	{
+**		size_t i;
+**
+**		i = 0;
+**		while (str[i])
+**			i++;
+**		return (i);
+**	}
+**	char	touppercase(unsigned int i, char c)
+**	{
+**		if (i < 3)
+**			c -= 32;
+**		return (c);
+**	}
+**
+**	char	*ft_strmapi(char const *s, char (*f)(unsigned int, char));
+**
+**	int		main(int ac, char **av)
+**	{
+**		char	*str;
+**		char	touppercase(unsigned int, char);
+**
+**		if (ac != 2)
+**			return (0);
+**		str = av[1];
+**		printf("%s\n",str);
+**		str = ft_strmapi(str, touppercase);
+**		printf("%s\n",str);
+**		return (0);
+**	}
+*/
+
+#include "libft.h"
+
+char	*ft_strmapi(char const *s, char (*f)(unsigned int, char))
+{
+	char	*str;
+	int		i;
+	int		size;
+
+	if (!s)
+		return (NULL);
+	size = ft_strlen(s);
+	if (!(str = (char *)malloc(sizeof(char) * (size + 1))))
+		return (NULL);
+	str[size] = '\0';
+	i = -1;
+	while (s[++i])
+		str[i] = f(i, s[i]);
+	return (str);
+}
diff --git a/srcs/ft_strmultisplit.c b/srcs/ft_strmultisplit.c
new file mode 100644
index 0000000..ed2ed98
--- /dev/null
+++ b/srcs/ft_strmultisplit.c
@@ -0,0 +1,83 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strmultisplit.c                                 :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2018/11/16 15:18:29 by hulamy            #+#    #+#             */
+/*   Updated: 2019/03/25 15:23:57 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+** return an array of string with each word found in str
+** with any character of charset difining a separator
+*/
+
+#include "libft.h"
+
+static int	ft_is_separator(char c, char *charset, int i)
+{
+	while (charset[i])
+	{
+		if (c == charset[i])
+			return (1);
+		i++;
+	}
+	c = charset[i];
+	return (0);
+}
+
+static int	ft_count(char *str, int word, char **tab, char *charset)
+{
+	int		i;
+	int		j;
+	int		k;
+
+	k = 0;
+	i = 0;
+	while (ft_is_separator(str[k], charset, 0) == 1)
+		k++;
+	while (str[k] != '\0' && i != word)
+	{
+		j = 0;
+		while (!ft_is_separator(str[k + j], charset, 0) && str[k + j] != '\0')
+		{
+			if (word == -2)
+				tab[i][j] = str[k + j];
+			j++;
+		}
+		k += j;
+		while (ft_is_separator(str[k], charset, 0))
+			k++;
+		i++;
+	}
+	if (word == -1)
+		return (i);
+	return (j);
+}
+
+char		**ft_strmultisplit(char *str, char *charset)
+{
+	char	**tab;
+	int		i;
+	int		j;
+	int		k;
+
+	k = 0;
+	tab = 0;
+	i = ft_count(str, -1, tab, charset);
+	if (!(tab = (char**)malloc(sizeof(tab) * (i + 1))))
+		return (NULL);
+	tab[i] = 0;
+	while (k < i)
+	{
+		j = ft_count(str, k + 1, tab, charset);
+		tab[k] = (char*)malloc(sizeof(*tab) * (j + 1));
+		tab[k][j] = '\0';
+		k++;
+	}
+	ft_count(str, -2, tab, charset);
+	return (tab);
+}
diff --git a/srcs/ft_strncat.c b/srcs/ft_strncat.c
new file mode 100644
index 0000000..cf52aae
--- /dev/null
+++ b/srcs/ft_strncat.c
@@ -0,0 +1,32 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strncat.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2018/11/14 21:18:24 by hulamy            #+#    #+#             */
+/*   Updated: 2019/03/25 15:24:11 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+** append n character of src to dest and return dest
+*/
+
+#include "libft.h"
+
+char	*ft_strncat(char *dest, const char *src, size_t nb)
+{
+	size_t	i;
+	size_t	j;
+
+	i = 0;
+	j = 0;
+	while (dest[i])
+		i++;
+	while (src[j] && j < nb)
+		dest[i++] = src[j++];
+	dest[i] = '\0';
+	return (dest);
+}
diff --git a/srcs/ft_strncmp.c b/srcs/ft_strncmp.c
new file mode 100644
index 0000000..7022624
--- /dev/null
+++ b/srcs/ft_strncmp.c
@@ -0,0 +1,32 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strncmp.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 13:57:59 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/25 13:58:00 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+** compare size first character of two null terminated strings
+** and return value of difference between first two different character
+*/
+
+#include "libft.h"
+
+int		ft_strncmp(const char *s1, const char *s2, size_t n)
+{
+	size_t	i;
+	int		res;
+
+	i = 0;
+	res = 0;
+	while (s1[i] && s1[i] == s2[i] && i < n - 1)
+		i++;
+	if (n != 0)
+		res = (unsigned char)s1[i] - (unsigned char)s2[i];
+	return (res);
+}
diff --git a/srcs/ft_strncpy.c b/srcs/ft_strncpy.c
new file mode 100644
index 0000000..91ea1b3
--- /dev/null
+++ b/srcs/ft_strncpy.c
@@ -0,0 +1,30 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strncpy.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2018/11/14 21:18:44 by hulamy            #+#    #+#             */
+/*   Updated: 2019/03/25 15:24:59 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+** copy n characters from string src to dst including '\0'
+** if space remain it's filled zith '\0', and return dst
+*/
+
+#include "libft.h"
+
+char	*ft_strncpy(char *dest, const char *src, size_t n)
+{
+	size_t i;
+
+	i = -1;
+	while (++i < n && src[i])
+		dest[i] = src[i];
+	while (i < n)
+		dest[i++] = '\0';
+	return (dest);
+}
diff --git a/srcs/ft_strnequ.c b/srcs/ft_strnequ.c
new file mode 100644
index 0000000..668f3fa
--- /dev/null
+++ b/srcs/ft_strnequ.c
@@ -0,0 +1,25 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strnequ.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2018/11/14 21:18:55 by hulamy            #+#    #+#             */
+/*   Updated: 2019/03/25 15:25:20 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+** return 0 if n first character of strings s1 and s2 are identical
+** and 1 if not
+*/
+
+#include "libft.h"
+
+int		ft_strnequ(char const *s1, char const *s2, size_t n)
+{
+	if (!s1 || !s2)
+		return (0);
+	return (ft_strncmp(s1, s2, n) == 0);
+}
diff --git a/srcs/ft_strnew.c b/srcs/ft_strnew.c
new file mode 100644
index 0000000..645feff
--- /dev/null
+++ b/srcs/ft_strnew.c
@@ -0,0 +1,27 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strnew.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2018/11/14 21:19:08 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/21 17:00:30 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+** create a new string of length size, fill with zero, and return pointer to it
+*/
+
+#include "libft.h"
+
+char	*ft_strnew(size_t size)
+{
+	char	*str;
+
+	if (!(str = (char *)malloc(sizeof(char) * (size + 1))))
+		return (NULL);
+	ft_bzero(str, size + 1);
+	return (str);
+}
diff --git a/srcs/ft_strnstr.c b/srcs/ft_strnstr.c
new file mode 100644
index 0000000..52ff0d2
--- /dev/null
+++ b/srcs/ft_strnstr.c
@@ -0,0 +1,42 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strnstr.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 13:58:10 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/25 13:58:11 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+** locate the first occurence of the string little in len first characters
+** of big and return a pointer to this occurence if found
+*/
+
+#include "libft.h"
+
+char	*ft_strnstr(const char *big, const char *little, size_t len)
+{
+	size_t i;
+	size_t j;
+
+	j = 0;
+	i = 0;
+	if (!ft_strlen(little))
+		return ((char *)big);
+	while (i == 0 && j <= len)
+	{
+		while (little[i] == big[j + i] && little[i] && j + i <= len)
+			i++;
+		if (little[i])
+		{
+			j++;
+			if (!big[j] || j >= len)
+				return (0);
+			i = 0;
+		}
+	}
+	return ((char *)big + j);
+}
diff --git a/srcs/ft_strrchr.c b/srcs/ft_strrchr.c
new file mode 100644
index 0000000..1c8faa8
--- /dev/null
+++ b/srcs/ft_strrchr.c
@@ -0,0 +1,32 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strrchr.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 13:58:20 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/25 13:58:21 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+** locate the last occurence of character c in string s
+** and return pointer to its location
+*/
+
+#include "libft.h"
+
+char	*ft_strrchr(const char *s, int c)
+{
+	int	i;
+
+	i = 0;
+	while (s[i])
+		i++;
+	i++;
+	while (i--)
+		if (s[i] == c)
+			return ((char *)s + i);
+	return (NULL);
+}
diff --git a/srcs/ft_strstr.c b/srcs/ft_strstr.c
new file mode 100644
index 0000000..c7a3535
--- /dev/null
+++ b/srcs/ft_strstr.c
@@ -0,0 +1,42 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strstr.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2018/11/14 21:19:45 by hulamy            #+#    #+#             */
+/*   Updated: 2019/03/25 15:26:59 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+** locate the first occurence of the string little in big
+** and return a pointer to this occurence if found
+*/
+
+#include "libft.h"
+
+char	*ft_strstr(const char *str, const char *to_find)
+{
+	int i;
+	int j;
+
+	j = 0;
+	i = 0;
+	if (!ft_strlen(to_find))
+		return ((char *)str);
+	while (i == 0)
+	{
+		while (to_find[i] && to_find[i] == str[j + i])
+			i++;
+		if (to_find[i])
+		{
+			j++;
+			if (str[j] == '\0' && to_find[i])
+				return (0);
+			i = 0;
+		}
+	}
+	return ((char *)str + j);
+}
diff --git a/srcs/ft_strtrim.c b/srcs/ft_strtrim.c
new file mode 100644
index 0000000..46f6133
--- /dev/null
+++ b/srcs/ft_strtrim.c
@@ -0,0 +1,90 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strtrim.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 14:01:49 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/25 14:20:41 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+** create a copy of s without the firsts and lasts empty characters
+*/
+
+/*
+**	#include <libc.h>
+**
+**	char	*ft_substr(char const *s, unsigned int start, size_t len)
+**	{
+**		char	*str;
+**		size_t	i;
+**
+**		if (!s)
+**			return (NULL);
+**		if (!(str = (char *)malloc(sizeof(char) * (len + 1))))
+**			return (NULL);
+**		str[len] = '\0';
+**		i = 0;
+**		while (i < len)
+**			str[i++] = s[start++];
+**		return (str);
+**	}
+**
+**	size_t		ft_strlen(const char *str)
+**	{
+**		size_t i;
+**
+**		i = 0;
+**		while (str[i])
+**			i++;
+**		return (i);
+**	}
+**
+**	char	*ft_strchr(const char *s, int c)
+**	{
+**		int	i;
+**		int	j;
+**
+**		i = 0;
+**		j = -1;
+**		while (s[i])
+**			i++;
+**		while (++j < i + 1)
+**			if (s[j] == c)
+**				return ((char *)s + j);
+**		return (NULL);
+**	}
+**
+**	char	*ft_strtrim(char const *s1, char const *set);
+**
+**	int		main(int ac, char **av)
+**	{
+**		if (ac == 3)
+**			printf("%s\n",ft_strtrim(av[1], av[2]));
+**
+**		return (0);
+**	}
+*/
+
+#include "libft.h"
+
+char	*ft_strtrim(char const *s1, char const *set)
+{
+	int		len;
+	char	*str;
+
+	if (!s1)
+		return (NULL);
+	while (s1[0] && ft_strchr(set, s1[0]))
+		s1++;
+	len = ft_strlen(s1) - 1;
+	while (len >= 0 && ft_strchr(set, s1[len]))
+		len--;
+	len++;
+	if (!(str = ft_substr(s1, 0, len)))
+		return (NULL);
+	return (str);
+}
diff --git a/srcs/ft_substr.c b/srcs/ft_substr.c
new file mode 100644
index 0000000..3ea3480
--- /dev/null
+++ b/srcs/ft_substr.c
@@ -0,0 +1,52 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_substr.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 14:01:58 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/27 19:54:09 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+** create a copy of a portion of s, begining at start and of length len
+*/
+
+/*
+**	#include <libc.h>
+**
+**	char	*ft_substr(char const *s, unsigned int start, size_t len);
+**
+**	int		main(int ac, char **av)
+**	{
+**		char	*str;
+**
+**		if (ac != 4)
+**			return (0);
+**		str = ft_substr(av[1], atoi(av[2]), atoi(av[3]));
+**		printf("%s\n",str);
+**		return (0);
+**	}
+*/
+
+#include "libft.h"
+
+char	*ft_substr(char const *s, unsigned int start, size_t len)
+{
+	char	*str;
+	size_t	i;
+
+	if (!s)
+		return (NULL);
+	if (ft_strlen(s) < start)
+		return ("");
+	if (!(str = (char *)malloc(sizeof(char) * (len + 1))))
+		return (NULL);
+	i = 0;
+	while (i < len && s[start])
+		str[i++] = s[start++];
+	str[i] = '\0';
+	return (str);
+}
diff --git a/srcs/ft_tolower.c b/srcs/ft_tolower.c
new file mode 100644
index 0000000..2cd5cb6
--- /dev/null
+++ b/srcs/ft_tolower.c
@@ -0,0 +1,20 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_tolower.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 13:58:30 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/25 13:58:32 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+int		ft_tolower(int c)
+{
+	if (c >= 'A' && c <= 'Z')
+		return (c + 32);
+	return (c);
+}
diff --git a/srcs/ft_toupper.c b/srcs/ft_toupper.c
new file mode 100644
index 0000000..cc842a5
--- /dev/null
+++ b/srcs/ft_toupper.c
@@ -0,0 +1,20 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_toupper.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/11/25 13:58:39 by hulamy            #+#    #+#             */
+/*   Updated: 2019/11/25 13:58:43 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+int		ft_toupper(int c)
+{
+	if (c >= 'a' && c <= 'z')
+		return (c - 32);
+	return (c);
+}
diff --git a/srcs/part2/a.out b/srcs/part2/a.out
deleted file mode 100755
index 10b9e26..0000000
Binary files a/srcs/part2/a.out and /dev/null differ