[LeetCode]Reverse Words in a String

本文介绍了一种使用Python高效反转字符串中单词的方法。针对输入字符串,该算法按单词反转顺序,并处理了空格与多余空格的问题,确保输出整洁且符合预期。

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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.    
Solution: Powerful Python! String Manipulation.
Running Time: O(n)
class Solution:
    # @param s, a string
    # @return a string
    def reverseWords(self, s):
        temp = s.split()[::-1]
        return ' '.join(temp).strip()


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