Python：Reverse Words in a String III题解

557. Reverse Words in a String III

Given a string, you need to reverse the order of characters in each word within a sentence while still preserving whitespace and initial word order.

Example 1:

Input: "Let's take LeetCode contest"
Output: "s'teL ekat edoCteeL tsetnoc"

Note: In the string, each word is separated by single space and there will not be any extra space in the string.

思路：

这里思路已经给的很明显了，因为Python字符串是不可改变的，所以只有利用单词之间的空格将句子分解成逐个的单词，然后在挨个单词取反，最后再用单个空格接再一起。

我的代码：

class Solution:
    def reverseWords(self, s):
        """
        :type s: str
        :rtype: str
        """
        word_list=s.split(' ')
        output=[]
        for word in word_list:
            reverse_word = word[::-1]
            output.append(reverse_word)
        return ' '.join(output)

同样的思路，一条语句就可以：

class Solution:
    def reverseWords(self, s):
        """
        :type s: str
        :rtype: str
        """
        return ' '.join([w[::-1] for w in s.split()])

<