Leetcode 151 Reverse Words in a String

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

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

Update (2015-02-12): For C programmers: Try to solve it in-place in O(1) space.

练练python，要是用c做的话，先将单词逆置，再将整个串逆置。

class Solution(object):
    def reverseWords(self, s):
        """
        :type s: str
        :rtype: str
        """
        word = s.split()
        word.reverse()
        return " ".join(word)