Reverse Vowels of a String

Challenge Points: 10

Level: Easy

You are given a string s.
Your task is to reverse only the vowels (a, e, i, o, u in both lowercase and uppercase) while keeping all other characters in their original positions.

Return the resulting string after the vowels have been reversed.

Example 1:

Input: s = "Programmer"

Output: "Pregrammor"

Example 2:

Input: s = "HELLOworld"

Output: "HELLOworld"

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