LeetCode 344. Reverse String

题目： Write a function that takes a string as input and returns the string reversed.

Example: Given s = “hello”, return “olleh”.

思路： 逆序一个字符串，用reverse_iterator

代码：

class Solution { public: string reverseString(string s) { string s1; for (string::reverse_iterator ix = s.rbegin(); ix != s.rend(); ++ix){ s1 += *ix; } return s1; } };