diff --git a/String/CreatePurmutations.js b/String/createPurmutations.js
similarity index 70%
rename from String/CreatePurmutations.js
rename to String/createPurmutations.js
index 3df7a6d94..8f3bc708b 100644
--- a/String/CreatePurmutations.js
+++ b/String/createPurmutations.js
@@ -1,3 +1,9 @@
+/*
+a permutation of a set is, loosely speaking, an arrangement of its members into a sequence or linear order, or if the set is already ordered, a rearrangement of its elements.
+The word "permutation" also refers to the act or process of changing the linear order of an ordered set
+More at : https://en.wikipedia.org/wiki/Permutation
+/*
+
 const createPermutations = (str) => {
 // convert string to array
   const arr = str.split('')