diff --git a/Makefile b/Makefile
index 7399e93..55cff5f 100644
--- a/Makefile
+++ b/Makefile
@@ -75,5 +75,13 @@ leaks: clean $(NAME)
 valgrind: clean $(NAME)
 	valgrind --leak-check=full --show-leak-kinds=all ./$(NAME) -p 4 67 9 76 98 7 1
 
+testp : clean $(NAME)
+	./$(NAME) -p 76 81 10 11 12 15 14 27 34 28 17 18 19 20 36 21 23 37 22 24 25 26 29 30 31 72 33 53 46 32 35 91 38 39 40 45 78 41 57 71 54 43 42 44 66 50 47 48 49 79 51 56 93 65 64 63 67 90 58 59 60 62 61 87 68 74 82 85 86 77 75 70 73 89 69 83 84 92 88 95 94 96 99 97 98 100 1 2 3 4 5 6 7 8 9 52 16 55 80 13
+
+test : clean $(NAME)
+	./$(NAME) 76 81 10 11 12 15 14 27 34 28 17 18 19 20 36 21 23 37 22 24 25 26 29 30 31 72 33 53 46 32 35 91 38 39 40 45 78 41 57 71 54 43 42 44 66 50 47 48 49 79 51 56 93 65 64 63 67 90 58 59 60 62 61 87 68 74 82 85 86 77 75 70 73 89 69 83 84 92 88 95 94 96 99 97 98 100 1 2 3 4 5 6 7 8 9 52 16 55 80 13
+
+# 83 94 28 17 18 36 20 33 39 53 23 37 22 24 45 25 29 78 26 30 31 72 46 32 35 70 38 93 50 91 40 5 41 57 71 66 92 54 67 75 65 42 43 44 74 79 47 48 49 88 51 63 7 68 87 61 82 4 90 58 59 62 60 1 85 89 96 98 100 84 69 77 73 3 86 99 97 6 2 9 8 52 80 16 55 13 76 81 10 11 12 15 14 27 34 56 21 64 95 19
+
 .PHONY: all clean fclean re gcc
 
diff --git a/builds/print.o b/builds/print.o
index 2536b4e..a3dd5d7 100644
Binary files a/builds/print.o and b/builds/print.o differ
diff --git a/builds/push.o b/builds/push.o
index 82d7e64..2105527 100644
Binary files a/builds/push.o and b/builds/push.o differ
diff --git a/builds/push_swap.o b/builds/push_swap.o
index b1eccf6..aeea254 100644
Binary files a/builds/push_swap.o and b/builds/push_swap.o differ
diff --git a/builds/reverse_rotate.o b/builds/reverse_rotate.o
index 4d163fa..f59aef6 100644
Binary files a/builds/reverse_rotate.o and b/builds/reverse_rotate.o differ
diff --git a/builds/rotate.o b/builds/rotate.o
index 3fac3c2..474239d 100644
Binary files a/builds/rotate.o and b/builds/rotate.o differ
diff --git a/builds/swap.o b/builds/swap.o
index 6b4afbb..a468b0f 100644
Binary files a/builds/swap.o and b/builds/swap.o differ
diff --git a/compare_pushswap.sh b/compare_pushswap.sh
new file mode 100755
index 0000000..ca8f39d
--- /dev/null
+++ b/compare_pushswap.sh
@@ -0,0 +1,52 @@
+#!/bin/bash
+
+# usage of arguments
+if [ $# -eq 3 ]
+then				# names = path to programs
+	NAME1=$1
+	NAME2=$2
+	PRGRM1=$1		# path to programs
+	PRGRM2=$2
+	SIZE=$3			# size of the list
+elif [ $# -eq 5 ]
+then				# names given in arguments
+	NAME1=$1
+	NAME2=$3
+	PRGRM1=$2		# path to programs
+	PRGRM2=$4
+	SIZE=$5			# size of the list
+else
+	echo "usage : ./compare_pushswap file1 file2 nb"
+	echo "or    : ./compare_pushswap name1 file1 name2 file2 nb"
+	exit 0
+fi
+
+# range of random numbers
+RANGE=100
+if [ $SIZE -gt 99 ]; then RANGE=1000; fi
+if [ $SIZE -gt 999 ]; then echo "size too big"; exit 0; fi
+
+# generate the list of randoms differents numbers
+LIST=($(shuf -i 0-$RANGE -n $SIZE))
+echo -e "${LIST[@]}"
+
+# player equal number of line of programm output
+PLAYER1=$(./$PRGRM1 ${LIST[@]} | wc -l)
+PLAYER2=$(./$PRGRM2 ${LIST[@]} | wc -l)
+
+# colors variables
+RED='\033[1;31m'
+GREEN='\033[1;32m'
+NC='\033[0m'
+
+if [ $PLAYER1 -lt $PLAYER2 ]
+then
+	COLOR1=$GREEN
+	COLOR2=$RED
+else
+	COLOR1=$RED
+	COLOR2=$GREEN
+fi
+
+echo -e "${COLOR1}$NAME1 : $PLAYER1${NC}"
+echo -e "${COLOR2}$NAME2 : $PLAYER2${NC}"
diff --git a/push_swap b/push_swap
index 9986793..3bc14bd 100755
Binary files a/push_swap and b/push_swap differ
diff --git a/srcs/print.c b/srcs/print.c
index 1144421..36da8de 100644
--- a/srcs/print.c
+++ b/srcs/print.c
@@ -39,11 +39,14 @@ void	fill_solution(t_list *solution, char *sp)
 
 void	print_result(t_list *result, int flag)
 {
+	int		i;
 	char	**part;
 
+	i = -1;
 	result = result->next->next;
 	while (result)
 	{
+		i++;
 		part = ft_split(result->content, '!');
 		ft_printf("%s\n", part[0]);
 		if (flag)
@@ -57,4 +60,6 @@ void	print_result(t_list *result, int flag)
 		free(part[2]);
 		free(part);
 	}
+	if (flag)
+		ft_putnbrendl(i);
 }
diff --git a/srcs/push.c b/srcs/push.c
index c6a2a1b..561cc7d 100644
--- a/srcs/push.c
+++ b/srcs/push.c
@@ -5,13 +5,14 @@ void	push(t_stack **dst, t_stack **src)
 	t_stack		*tmp1;
 	t_stack		*tmp2;
 
-	if (!((*src)->next))
-		return ;
-	tmp1 = *src;
-	tmp2 = *dst;
-	*src = (*src)->next;
-	tmp1->next = tmp2;
-	*dst = tmp1;
+	if (*src)
+	{
+		tmp1 = *src;
+		tmp2 = *dst;
+		*src = (*src)->next;
+		tmp1->next = tmp2;
+		*dst = tmp1;
+	}
 }
 
 t_list	*pa(t_stack **a, t_stack **b, t_list **solution)
diff --git a/srcs/push_swap.c b/srcs/push_swap.c
index c025223..7203919 100644
--- a/srcs/push_swap.c
+++ b/srcs/push_swap.c
@@ -47,10 +47,10 @@ t_list	*launch_algo(t_stack **a, t_stack **b, int flag)
 	ft_lstadd_back(&solution, ft_lstnew(b));
 	if (flag)
 		fill_solution(solution, "start");
-	hugo_sort(a, b, solution);
+	// hugo_sort(a, b, solution);
+	bubble_sort(a, b, solution);
 	return (solution);
 }
-// bubble_sort(&a, &b, solution);
 
 int	main(int ac, char **av)
 {
diff --git a/srcs/reverse_rotate.c b/srcs/reverse_rotate.c
index 57a61bb..38567ba 100644
--- a/srcs/reverse_rotate.c
+++ b/srcs/reverse_rotate.c
@@ -5,17 +5,18 @@ void	reverse_rotate(t_stack **stack)
 	t_stack		*tmp;
 	t_stack		*before;
 
-	tmp = *stack;
-	if (!tmp || !(tmp->next))
-		return ;
-	while (tmp->next)
+	if (*stack && (*stack)->next)
 	{
-		before = tmp;
-		tmp = tmp->next;
+		tmp = *stack;
+		while (tmp->next)
+		{
+			before = tmp;
+			tmp = tmp->next;
+		}
+		tmp->next = *stack;
+		*stack = tmp;
+		before->next = NULL;
 	}
-	tmp->next = *stack;
-	*stack = tmp;
-	before->next = NULL;
 }
 
 t_list	*rra(t_stack **a, t_list **lst)
diff --git a/srcs/rotate.c b/srcs/rotate.c
index 9988136..3b9f861 100644
--- a/srcs/rotate.c
+++ b/srcs/rotate.c
@@ -5,15 +5,16 @@ void	rotate(t_stack **stack)
 	t_stack		*tmp;
 	t_stack		*first;
 
-	first = *stack;
-	tmp = *stack;
-	if (!tmp || !(tmp->next))
-		return ;
-	*stack = (*stack)->next;
-	while (tmp->next)
-		tmp = tmp->next;
-	tmp->next = first;
-	first->next = NULL;
+	if (*stack && (*stack)->next)
+	{
+		first = *stack;
+		tmp = *stack;
+		*stack = (*stack)->next;
+		while (tmp->next)
+			tmp = tmp->next;
+		tmp->next = first;
+		first->next = NULL;
+	}
 }
 
 t_list	*ra(t_stack **a, t_list **lst)
diff --git a/srcs/swap.c b/srcs/swap.c
index 9fd4048..edc55cb 100644
--- a/srcs/swap.c
+++ b/srcs/swap.c
@@ -4,12 +4,13 @@ void	swap(t_stack **stack)
 {
 	t_stack		*tmp;
 
-	tmp = *stack;
-	if (!(tmp->next))
-		return ;
-	*stack = (*stack)->next;
-	tmp->next = (*stack)->next;
-	(*stack)->next = tmp;
+	if (*stack && (*stack)->next)
+	{
+		tmp = *stack;
+		*stack = (*stack)->next;
+		tmp->next = (*stack)->next;
+		(*stack)->next = tmp;
+	}
 }
 
 t_list	*sa(t_stack **a, t_list **solution)