leetcode刷题（69）——151.翻转字符串里的单词

class Solution {
    public static String reverseWords(String s) {
        String[] split = s.split(" ");
        String str = "";
        for (int i = split.length - 1; i >= 0; i--) {
            if (!split[i].equals("")) {
                if (i != split.length - 1) {
                    str += " ";
                }
                str += split[i];
            }
        }
        return str;
    }
}