import java.util.ArrayList;
import java.util.Arrays;


public class Ex01AverageVowels {

	public static boolean isVowel(char ch) {
		switch (Character.toLowerCase(ch)) {
			case 'a':
			case 'e':
			case 'i':
			case 'o':
			case 'u':
				return true;
			default:
				return false;
		}
	}

	public static void main(String[] args) {
		String[] strs = { "Hello", "in", "there", "how", "are", "you", "feeling", "this", "morning" };
		List<String> list = new ArrayList<String>(
			Arrays.asList(strs)
		);
		int nVowels = 0;
		int totalLetters = 0;
		for (String word : list) {
			totalLetters += word.length();
			for (int i = 0; i < word.length(); i++) {
				char ch = word.charAt(i);
				if (isVowel(ch)) {
					nVowels++;
				}
			}
		}
		System.out.printf("#Vwl=%d #totalLetters=%d Ratio=%1.2f\n", nVowels, totalLetters,
			(double)nVowels/totalLetters);
	}

}