345. Reverse Vowels of a String LeetCode Solution | Easy Approach

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Reverse Vowels of a String Given a string s, reverse only all the vowels in the string and return it.

The vowels are 'a''e''i''o', and 'u', and they can appear in both cases.

Example 1:

Input: s = "hello"
Output: "holle"

Example 2:

Input: s = "leetcode"
Output: "leotcede"

Constraints:

  • 1 <= s.length <= 3 * 105
  • s consist of printable ASCII characters.

Reverse Vowels of a String Solutions

Time: O(n)
Space: O(n)

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