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Reverse Words in a String
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".
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.
原题链接: https://oj.leetcode.com/problems/reverse-words-in-a-string/
题目大意: 将句子中的单词逆序
思路: 注意clarification中的情况, 养成注意细节的习惯
1 class Solution: 2 # @param s, a string 3 # @return a string 4 def reverseWords(self, s): 5 s = s.strip().split(‘ ‘) #strip eliminate pre and trail white spaces 6 7 #eliminate useless white spaces between words 8 for i in range(0, s.count(‘‘)): 9 s.remove(‘‘)10 11 s.reverse()12 13 return ‘ ‘.join(s)
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