【Leetcode】Reverse Words in a String

题目链接：https://leetcode.com/problems/reverse-words-in-a-string/

题目：

Given an input string, reverse the string word by word.

For example,

Given s = "the sky is blue",

return "blue is sky the".

思路：

easy

算法：

public String reverseWords(String s) {  
        String ss[] = s.trim().split("\\s+");  
        for (int i = 0; i < ss.length / 2; i++) {  
            String tmp = ss[i];  
            ss[i] = ss[ss.length - 1 - i];  
            ss[ss.length - 1 - i] = tmp;  
        }  
        String res = "";  
        for (String tmp : ss) {  
            res += tmp + " ";  
        }  
        return res.trim();  
    }