Algorithmsintermediate

Count Vowels

📖 Usage Example

function countVowels(s) {
  return (s.match(/[aeiou]/gi) || []).length;
}
countVowels('Hello World'); // 3

Count vowels using a regex match that captures all vowels case-insensitively.

Count the number of vowel characters (a, e, i, o, u) in a string, case-insensitive.

"hello" has 2 vowels: e, o
"aeiou" has 5 vowels
"xyz" has 0 vowels

Algorithm:

function countVowels(s: string): number {
  // Return the count of vowels in s
}

countVowels('hello') // 2

💡 Hints (5)

17/25