Count Vowels

MEDIUMString Processing

Read a word. Output the number of vowels (a, e, i, o, u) it contains. Ignore case.

Input: A single word. Output: The count of vowels.

Example:

Input:  hello
Output: 2

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Sample Test Cases

Test 1: hello has 2 vowels

Inputs: hello

Expected: 2

Test 2: programming has 3 vowels

Inputs: programming

Expected: 3

Test 3: No vowels

Inputs: rhythm

Expected: 0

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