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g0901_1000.s0917_reverse_only_letters.readme.md Maven / Gradle / Ivy

917\. Reverse Only Letters

Easy

Given a string `s`, reverse the string according to the following rules:

*   All the characters that are not English letters remain in the same position.
*   All the English letters (lowercase or uppercase) should be reversed.

Return `s` _after reversing it_.

**Example 1:**

**Input:** s = "ab-cd"

**Output:** "dc-ba"

**Example 2:**

**Input:** s = "a-bC-dEf-ghIj"

**Output:** "j-Ih-gfE-dCba"

**Example 3:**

**Input:** s = "Test1ng-Leet=code-Q!"

**Output:** "Qedo1ct-eeLg=ntse-T!"

**Constraints:**

*   `1 <= s.length <= 100`
*   `s` consists of characters with ASCII values in the range `[33, 122]`.
*   `s` does not contain `'\"'` or `'\\'`.