VowelGame | Topcoder Archive

Problem Statement

You will be given a string of lowercase letters ('a'-'z'). Your job is to return how many vowels ('a','e','i','o','u') there are in the string.

Definition

Class:: VowelGame
Method:: countVowels
Parameters:: String
Returns:: int
Method signature:: int countVowels(String input)
(be sure your method is public)

Notes

'y' is never a vowel in this problem

Constraints

input will contain between 0 and 50 characters inclusive
Each character in input will be a lowercase letter ('a'-'z')

Examples

```
""
```
```
Returns: 0
```
No characters
```
"aeiou"
```
```
Returns: 5
```
All vowels
```
"topcoder"
```
```
Returns: 3
```
2 'o's and 1 'e'

"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"

Returns: 50

A lot of 'a's

```
"czczczczczczczczc"
```
```
Returns: 0
```
No vowels here
```
"yyyyyyyyyyyyyyyyyyyy"
```
```
Returns: 0
```
We never consider 'y' to be a vowel

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