carloscn / carloscn/structstudy

leetcode917: 仅仅反转字母(reverse-only-letters)

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Lang-rust Level-easy 一般问题 字符串 查找
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Description

### 问题描述

给你一个字符串 s ,根据下述规则反转字符串:

所有非英文字母保留在原有位置。
所有英文字母(小写或大写)位置反转。
返回反转后的 s 。

示例 1:

输入:s = "ab-cd"
输出:"dc-ba"
示例 2:

输入:s = "a-bC-dEf-ghIj"
输出:"j-Ih-gfE-dCba"
示例 3:

输入:s = "Test1ng-Leet=code-Q!"
输出:"Qedo1ct-eeLg=ntse-T!"
 
提示

1 <= s.length <= 100
s 仅由 ASCII 值在范围 [33, 122] 的字符组成
s 不含 '\"' 或 '\\'

来源:力扣(LeetCode)
链接:https://leetcode.cn/problems/reverse-only-letters

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