diff --git a/README.md b/README.md
index 1d2e641..ebd9f50 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,6 @@
+
+[source des comparaisons ci-dessous :](https://www.youtube.com/watch?v=xoR-1KwQh2k)
+
 numbers  comparisons  array-access  name
     200       19 900        18 448  Bubble Sort
     200       20 000        20 384  Cocktail Shaker Sort