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jasch-shah · Sep 4, 2017 · 75f3215 · 75f3215
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diff --git a/CrackingTheCodingInterview/Chapter1ArraysAndStrings/Permutation.java b/CrackingTheCodingInterview/Chapter1ArraysAndStrings/Permutation.java
@@ -1,4 +1,4 @@
-// Given two strings, write a metho dto decide if one is a permutation of the other
+// Given two strings, write a method to decide if one is a permutation of the other
 
 public class Permutation {
 	public boolean permutation(String s, String t) {
@@ -22,4 +22,4 @@ public boolean permutation(String s, String t) {
 
 		return true;
 	}
-}
+}
diff --git a/README-zh-cn.md b/README-zh-cn.md
@@ -33,6 +33,11 @@
 * [CodeFights](https://codefights.com/)
 * [Kattis](https://open.kattis.com/)
 * [HackerEarth](https://www.hackerearth.com)
+* [Codility](https://codility.com/programmers/lessons/1-iterations/)
+* [Code Forces](http://codeforces.com/)
+* [Code Chef](https://www.codechef.com/)
+* [Sphere Online Judge - SPOJ](http://www.spoj.com/)
+* [InterviewBit](https://www.interviewbit.com/)
 
 ## 在线面试编程
 * [Gainlo](http://www.gainlo.co/#!/)

diff --git a/README.md b/README.md
@@ -36,6 +36,7 @@
 * [Code Forces](http://codeforces.com/)
 * [Code Chef](https://www.codechef.com/)
 * [Sphere Online Judge - SPOJ](http://www.spoj.com/)
+* [InterviewBit](https://www.interviewbit.com/)
 
 ## Live Coding Practice
 * [Gainlo](http://www.gainlo.co/#!/)