Count vowels
Given a lowercase string s, count how many characters are vowels. A vowel is one of 'a', 'e', 'i', 'o', 'u'. Return the total count. The string may be empty and contains only lowercase ASCII letters.
Implement
count_vowels(s: str) → intExamples
in
["hello"]out2What 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 10 min
solution.py
InputExpectedGot
["hello"]2not run yetsample