[leetcode]Reverse Words in a String

problem:

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

For example,
Given s = "the sky is blue",
return "blue is sky the".

solution:

class Solution:    # @param s, a string    # @return a string    def reverseWords(self, s):                newstring = s.split()[::-1]                cs= ' '.join([i for i in newstring])                        return str(cs)