[LeetCode] 917. Reverse Only Letters 只翻转字母

Given a string?S, return the "reversed" string where all characters that are not a letter?stay in the same place, and all letters reverse their positions.

Example 1:

Input: "ab-cd"
Output: "dc-ba"

Example 2:

Input: "a-bC-dEf-ghIj"
Output: "j-Ih-gfE-dCba"

Example 3:

Input: "Test1ng-Leet=code-Q!"
Output: "Qedo1ct-eeLg=ntse-T!"

Note:

1. S.length <= 100
2. 33 <= S[i].ASCIIcode <= 122?
3. S?doesn‘t contain?\?or?"

Github 同步地址:

https://github.com/grandyang/leetcode/issues/917

参考资料：

https://leetcode.com/problems/reverse-only-letters/

LeetCode All in One 题目讲解汇总(持续更新中...)

[LeetCode] 917. Reverse Only Letters 只翻转字母

原文：https://www.cnblogs.com/grandyang/p/11701412.html