Leetcode：344. Reverse String

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

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

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我的AC代码：

public class Solution {    public String reverseString(String s) {        char[] a=s.toCharArray();        char[] temp=new char[a.length];        int j=0;        for(int i=a.length-1;i>=0;i--){            temp[j]=a[i];            j++;        }        return String.valueOf(temp);    }}