the solution of the problem "Reverse String"

README.md

@@ -12,6 +12,7 @@ LeetCode
 |349|[Intersection of Two Arrays](https://leetcode.com/problems/intersection-of-two-arrays/) | [C++](./algorithms/cpp/intersectionOfTwoArrays/intersectionOfTwoArrays.cpp)|Easy|
 |347|[Top K Frequent Elements](https://leetcode.com/problems/top-k-frequent-elements/) | [C++](./algorithms/cpp/topKFrequentElements/topKFrequentElements.cpp)|Medium|
 |345|[Reverse Vowels of a String](https://leetcode.com/problems/reverse-vowels-of-a-string/) | [C++](./algorithms/cpp/reverseVowelsOfAString/reverseVowelsOfAString.cpp)|Easy|
+|345|[Reverse String](https://leetcode.com/problems/reverse-string/) | [C++](./algorithms/cpp/reverseString/ReverseString.cpp)|Easy|
 |337|[House Robber III](https://leetcode.com/problems/house-robber-iii/) | [C++](./algorithms/cpp/houseRobber/houseRobberIII.cpp)|Medium|
 |334|[Increasing Triplet Subsequence](https://leetcode.com/problems/increasing-triplet-subsequence/) | [C++](./algorithms/cpp/increasingTripletSubsequence/increasingTripletSubsequence.cpp)|Medium|
 |330|[Patching Array](https://leetcode.com/problems/patching-array/) | [C++](./algorithms/cpp/patchingArray/PatchingArray.cpp)|Medium|

algorithms/cpp/reverseString/ReverseString.cpp

@@ -0,0 +1,24 @@
+// Source : https://leetcode.com/problems/reverse-string/
+// Author : Hao Chen
+// Date   : 2016-05-29
+
+/*************************************************************************************** 
+ *
+ * Write a function that takes a string as input and returns the string reversed.
+ * 
+ * Example:
+ * Given s = "hello", return "olleh".
+ ***************************************************************************************/
+
+class Solution {
+public:
+    string reverseString(string s) {
+        int len = s.size();
+        for (int i=0; i<len/2; i++) {
+           char ch = s[i];
+           s[i] = s[len-i-1];
+           s[len-i-1] = ch;
+        } 
+        return s;
+    }
+};