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 lower and upper cases, more than once.
Examples
Example 1
Input: s = "IceCreAm"
Output: "AceCreIm"
The vowels in s are ['I', 'e', 'e', 'A']. Reversing them gives ['A', 'e', 'e', 'I'].
Example 2
Input: s = "leetcode"
Output: "leotcede"
Constraints
1 <= s.length <= 3 * 10^5sconsist of printable ASCII characters