How should I practice Count Vowels and Consonants?

Start by reading the full statement, solve the visible examples, then compare the pattern against related Mygate phone screen problems in FastPrep.

Is Count Vowels and Consonants associated with Mygate?

FastPrep tags this as a Mygate phone screen coding practice problem when the problem catalog has that company and stage context.

Count Vowels and Consonants

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Problem statement

Given an ASCII string s, return [vowels, consonants], the counts of vowels and consonants among its English letters.

Treat uppercase and lowercase letters alike. The vowels are a, e, i, o, and u. Every other English letter, including y, is a consonant. Ignore digits, punctuation, and whitespace.

An empty string or a string without letters produces [0,0].

Function

countVowelsConsonants(s: String) → int[]

Examples

Example 1

s = "Hello, World!"return = [3,7]

The vowels are e, o, and o. The other seven letters are consonants; punctuation and the space are ignored.

Example 2

s = "AEIOUaeiou 123!"return = [10,0]

Both cases of all five vowels count; digits and punctuation do not.

Constraints

0 ≤ s.length ≤ 100,000.
s contains ASCII characters.