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Solution: Reverse Vowels of a String

Explore the two pointers technique to reverse only the vowels in a given string. Learn to implement an efficient in-place solution that swaps vowels by moving pointers inward, while understanding time and space complexity tradeoffs.

Statement

Given a string s, reverse only the vowels in the string and return the resulting string.

The vowels are ‘a’‘e’‘i’‘o’, and ‘u’, and they can appear in both lowercase and uppercase, potentially more than once.

Constraints:

  • 11 \leq s.length 3×105 ...