Reverse vowels only
Given a lowercase string s, reverse the order of its vowels (a, e, i, o, u) while every other character stays exactly where it is, and return the resulting string. Use one pointer scanning from each end: skip non-vowels, swap when both pointers rest on vowels. Example: 'hello' becomes 'holle', and 'audio' becomes 'oidua'.
Implement
reverse_vowels(s: str) → strExamples
in
["hello"]out"holle"What a strong answer looks like
State your approach and its time/space complexity out loud before you optimize. Handle the edge cases (empty input, duplicates, overflow), and say why you chose this over the brute force. Green tests are the floor, not the grade.
0:00 of about 12 min
solution.py
InputExpectedGot
["hello"]"holle"not run yetsample