翻转字符串里的单词 给定一个字符串，逐个翻转字符串中的每个单词并删除多余的空格Python实现

示例：

输入： "Hello World"
输出：" World Hello"
输入： "ni hao  xiaoming"
输出：" xiaoming hao ni"

import re
def reverseWords(s):   
    return re.sub("  "," "," ".join(s.split(" ")[::-1]))

reverseWords("ni hao   a")