Count Vowels

L1 Easy Strings

Concept

Searching a string for members of a small set of letters is a loop plus a membership check.

Count how many of the letters a, e, i, o, and u appear in s. Both uppercase and lowercase count.

Examples

▸ s = "hello"

→ 2

▸ s = "AEIOU"

→ 5

▸ s = "xyz"

→ 0

Progressive Hints

Hint 1 · Nudge

You're counting members of a tiny five-letter club.

Hint 2 · Plan

Turn the whole string lowercase so case stops mattering. Then loop and count every character that is one of a, e, i, o, u.

Hint 3 · Approach

count = 0. For each character c in the lowercased string: if c is one of the five vowels then count = count + 1. Return count.

Output

// Run your code to see the output here.