EasyFoundational

Count Vowels in a String

Time limit: 1 s
Memory limit: 128 MB
Estimated: 15 min

Programming Fundamentals

Description

Given a string s, count how many vowels it contains.

The English vowels are a, e, i, o, and u. Both uppercase and lowercase vowels must be counted. Every occurrence is counted separately; for example, the string "education" contains five vowels.

All input characters are standard English letters and spaces. An empty string contains zero vowels.

Examples:

s = "Hello World" returns 3.
s = "AEIOU" returns 5.
s = "rhythm" returns 0.

Implement countVowels(s).

Constraints

0 <= s.length <= 100000 s contains only uppercase English letters, lowercase English letters, and spaces.

Sample cases

Sample 1
Input
```
s = "Hello World"
```
Expected output
```
3
```
Sample 2
Input
```
s = "AEIOU"
```
Expected output
```
5
```
Sample 3

Skills and languages

Languages

Python 3

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Sample 1

Input

Expected output

Sample 2

Input

Expected output

Sample 3

Languages

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Input

Expected output