題目

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

Example 1:

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

Example 2:

Input: s = "God Ding"
Output: "doG gniD"

Constraints:

• 1 <= s.length <= 5 * 104
• s contains printable ASCII characters.
• s does not contain any leading or trailing spaces.
• There is at least one word in s.
• All the words in s are separated by a single space.

思路

分割字串為陣列，逆轉每個元素，再合併陣列為字串。

神奇演算法：分割字串為陣列，逆轉陣列，再合併陣列為字串，再逆轉字串

程式碼

python版本：

class Solution:
    def reverseWords(self, s: str) -> str:
        words=[word[::-1] for word in s.split()]
        return ' '.join(words)

# 神奇演算法
class Solution:
    def reverseWords(self, s: str) -> str:
        return ' '.join(s.split()[::-1])[::-1]