Write a function that takes a string as input and returns the string reversed.
Example:
Given s = "hello", return "olleh".
题目含义：翻转字符串
1 public String reverseString(String s) { 2 char[] words = s.toCharArray(); 3 int left = 0,right = words.length-1; 4 while (left<right) 5 { 6 char temp = words[left]; 7 words[left] = words[right]; 8 words[right] = temp; 9 left++; 10 right--; 11 } 12 return new String(words); 13 }
原文：http://www.cnblogs.com/wzj4858/p/7679097.html