LeetCode-557. Reverse Words in a String III

发布于 2017-07-10 14:50:43

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.


这个题目就是对一个句子中的单词进行逆序,在python中列表有reverse方法,这里其实就有两种方法,一种是借助分片对字符串进行逆序,使用[::-1]就可以了,一种是把word转换成list,然后再用reverse方法,这里采用对是第一种方法。

class Solution(object):
    def reverseWords(self, s):
        """
        :type s: str
        :rtype: str
        """
        l = s.split(" ")
        r = []
        for word in l:
            r.append(word[::-1])
        return " ".join(r)