Reverse Only Vowel Occurrences in an ASCII String
Company: Google
Role: Software Engineer
Category: Coding & Algorithms
Difficulty: easy
Interview Round: Other
### Problem
Reverse the sequence of vowels in s while leaving every nonvowel position unchanged. Vowels are a,e,i,o,u in either case; move each vowel's actual character, preserving its case.
```cpp
string reverseVowels(string s);
```
### Examples
```text
s = "a-bE" -> "E-ba"
s = "rhythm!" -> "rhythm!"
```
### Constraints
- String length is 1 through 300000.
- Characters are printable ASCII.
Overview: Reverse Only Vowel Occurrences in an ASCII String. Reverse the sequence of vowels in s while leaving every nonvowel position unchanged. Vowels are a,e,i,o,u in either case; move each vowel's actual character, pr