LeetCodeOJ--Reverse Words in a String(python版本)

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

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

click to show clarification.

Clarification:

• What constitutes a word?
  A sequence of non-space characters constitutes a word.
• Could the input string contain leading or trailing spaces?
  Yes. However, your reversed string should not contain leading or trailing spaces.
• How about multiple spaces between two words?
  Reduce them to a single space in the reversed string.

1.测试版本代码：

# -*- coding: cp936 -*-s = " tian zhai  xing  "print "Before s:",sdef reverseWords(s):    L = s.split() #单词拆分成列表    print "字符串以单词分割成列表: %s" % L    L.reverse()#反转列表中单词    print "反转列表中的单词: %s" % L    s1 = ' '.join(L)#列表以空格分割单词，返回字符串    print "以空格分隔列表中反转后的单词: %s" % s1    return s1    #return s1.rstrip()#字符串删除首尾空格和回车L = reverseWords(s)print "Afer L  :",L

2.测试版本截图：

3.提交AC版本代码：

class Solution:    # @param s, a string    # @return a string    def reverseWords(self, s):        L = s.split()#字符串以单词分隔成列表        L.reverse()#反转列表中的单词        s1 = ' '.join(L)#以空格分隔列表中反转后的单词，返回字符串        return s1