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leetcode 【 Reverse Words in a String 】python 实现

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".

 

代码:oj在线测试通过 Runtime: 172 ms

 1 class Solution: 2     # @param s, a string 3     # @return a string 4     def reverseWords(self, s): 5         words = s.split( ) 6          7         if len(words) < 2 : 8             return s 9         10         tmp = ""11         for word in words:12             word = word.replace( ,‘‘)13             if word != "" :14                 tmp = word + " " + tmp15         16         tmp = tmp.strip()17         18         return tmp

 

思路

把中间多个空格考虑去除了就OK了

最后用strip()函数把首位的空白去了

leetcode 【 Reverse Words in a String 】python 实现