🧠 Before you code — what pattern fits?
Given a string s, reverse only all the vowels in the string and return it. The vowels are 'a', 'e', 'i', 'o', and 'u' (both cases).
reverseVowels("hello") → "holle"
reverseVowels("leetcode") → "leotcede"
🎬 Video explanation · codestorywithMIK
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Test console · 3 unit tests
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