/**
 * TODO Put here a description of what this class does.
 *
 * @author Jake. Created Apr 25, 2019.
 */
public class Main {
	private booleanWrapper bool;
	private booleanWrapper bool2;

	public static void main(String[] args) {
		new Main();

	}

	/**
	 * TODO Put here a description of what this method does.
	 *
	 */
	private Main() {
		this.bool  = new booleanWrapper();
		this.bool2  = new booleanWrapper();
		boolean boo1 = true;
		boolean boo2 = true;
		String s = "jkmnb";
		String d = "jake";

		noVowels2(s, bool);
		noVowels2(d, bool2);

		System.out.println("noVowels1(s): " + noVowels1(s));
		System.out.println("noVowels1(s): " + noVowels1(d));
		System.out.println("noVowels2(s, bool): " + bool.noVowels);
		System.out.println("noVowels2(d, bool2): " + bool2.noVowels);
		System.out.println("noVowels3(s, boo1): " + noVowels3(s, boo1));
		System.out.println("noVowels3(d, boo2): " + noVowels3(d, boo2));

	}

	public boolean noVowels1(String s) {
		if(s.length() == 0) {
			return true;
		} else if(s.charAt(0)=='a' || s.charAt(0)=='e' || s.charAt(0)=='i' || s.charAt(0)=='o' || s.charAt(0)=='u') {
	        return false;
	    } else {
	    	return noVowels1(s.substring(1));
	    }
	}

	public void noVowels2(String s, booleanWrapper bool) {
		if(s.length() == 0 || s == null) {
			bool.noVowels = true;
			return;
		}

		if(s.charAt(0) == 'a' || s.charAt(0) == 'e' || s.charAt(0) == 'i' || s.charAt(0) == 'o' || s.charAt(0) ==  'u') {
			bool.noVowels = false;
			return;
		} else {
			noVowels2(s.substring(1), bool);
		}
	}

	public boolean noVowels3(String s, boolean bool) {
		if(s.length() == 0 || s == null) {
			bool = true;
			return bool;
		}

		if(s.charAt(0) == 'a' || s.charAt(0) == 'e' || s.charAt(0) == 'i' || s.charAt(0) == 'o' || s.charAt(0) ==  'u') {
			bool = false;
			return bool;
		} else {
			return noVowels3(s.substring(1), bool);
		}
	}

	public class booleanWrapper {
		public boolean noVowels = true;
	}
}