Write a TypeScript function to count the number of vowels in a string.

Easy

"hello world"

Number of vowels: 3

Time: 2s · Memory: 256 MB

Code Editor

00:00

function countVowels(str: string): number { // Your logic here } // Call the function

Input

"hello world"

Expected Output

Number of vowels: 3

Custom Input (stdin)

Program Output

> Run your code to see console output.

Programming Exercises