[LeetCode]Reverse Words in a String

最新推荐文章于 2025-08-12 18:06:10 发布

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最新推荐文章于 2025-08-12 18:06:10 发布

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文章标签： python leetcode string

本文链接：https://blog.youkuaiyun.com/myself9711/article/details/40427077

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()