【Leetcode】557. Reverse Words in a String III

思路：

用空格分割字符串，对每个子串，逆序，添加到结果数组。

public class Solution {    public String reverseWords(String s) {        String[] strs = s.split(" ");        String result = "";        int len = strs.length;        for (int i = 0; i < len - 1; i++)             result += reverse(strs[i]) + " ";        result += reverse(strs[len - 1]);        return result;    }    public String reverse(String str) {        String result = "";        int len = str.length();        for (int i = 0; i < len; i++)             result = str.charAt(i) + result;        return result;    }}

Runtime：243ms