1207. Vowel Count

Return the number (count) of vowels in the given string.

We will consider a, e, i, o, u as vowels for this Kata (but not y).

The input string will only consist of lower case letters and/or spaces.

Solution:

int getCount(String inputStr){
  List<String> arr = [];
  for (String s in inputStr.toLowerCase().split('')) {
    if (["a","e","i","o","u"].contains(s)) {
      arr.add(s);
    }
  }
  return arr.length;
}

import "dart:core";

int getCount(String str) => new RegExp('[aeiou]').allMatches(str).length;

int getCount(String inputStr){
  return inputStr.split('').fold(0, (a, b) => a += 'aeiou'.contains(b) ? 1 : 0 );
}