reverse-only-letters

java

python

python3

mysql

mssql

oraclesql

csharp

javascript

typescript

bash

swift

kotlin

dart

golang

ruby

scala

rust

racket

erlang

elixir

pythondata

postgresql

cangjie

Algorithms

Given a string <code>s</code>, reverse the string according to the following rules:

<ul>
	<li>All the characters that are not English letters remain in the same position.</li>
	<li>All the English letters (lowercase or uppercase) should be reversed.</li>
</ul>

Return <code>s</code> after reversing it.

&nbsp;
Example 1:
<pre>Input: s = "ab-cd"
Output: "dc-ba"
</pre>Example 2:
<pre>Input: s = "a-bC-dEf-ghIj"
Output: "j-Ih-gfE-dCba"
</pre>Example 3:
<pre>Input: s = "Test1ng-Leet=code-Q!"
Output: "Qedo1ct-eeLg=ntse-T!"
</pre>
&nbsp;
Constraints:

<ul>
	<li><code>1 &lt;= s.length &lt;= 100</code></li>
	<li><code>s</code> consists of characters with ASCII values in the range <code>[33, 122]</code>.</li>
	<li><code>s</code> does not contain <code>&#39;\&quot;&#39;</code> or <code>&#39;\\&#39;</code>.</li>
</ul>

reverseOnlyLetters

Reverse Only Letters

Faulty Keyboard

faulty-keyboard

故障键盘

Two Pointers

String

给你一个字符串 <code>s</code> ，根据下述规则反转字符串：

<ul>
	<li>所有非英文字母保留在原有位置。</li>
	<li>所有英文字母（小写或大写）位置反转。</li>
</ul>

返回反转后的 <code>s</code> 。

&nbsp;

<ol>
</ol>

示例 1：

<pre>
输入：s = "ab-cd"
输出："dc-ba"
</pre>

<ol>
</ol>

示例 2：

<pre>
输入：s = "a-bC-dEf-ghIj"
输出："j-Ih-gfE-dCba"
</pre>

<ol>
</ol>

示例 3：

<pre>
输入：s = "Test1ng-Leet=code-Q!"
输出："Qedo1ct-eeLg=ntse-T!"
</pre>

&nbsp;

提示

<ul>
	<li><code>1 &lt;= s.length &lt;= 100</code></li>
	<li><code>s</code> 仅由 ASCII 值在范围 <code>[33, 122]</code> 的字符组成</li>
	<li><code>s</code> 不含 <code>'\"'</code> 或 <code>'\\'</code></li>
</ul>