public class Assignment2part1 {
	public static int cube(int number){
		int output = number*number*number;
		return output;
	}
	public static int max(int x, int y){
		int output = (int)Math.max(x, y);
		return output;
	}
	public static int max(int x, int y, int z){
		int output = (int)(Math.max(Math.max(x, y), z));
		return output;
	}
	public static int max(int a, int b, int c, int d){
		int output = (int)Math.max((Math.max(a, b)),(Math.max(c,d)));
		return output;
	}
	public static double average(double a, double b, double c, double d){
		double output = (a+b+c+d)/4;
		return output;
	}
	public static double quadraticRoot(double a, double b, double c){
		double squareRoot = Math.sqrt((b*b) - (4*a*c));
		double output = (double)((-b + squareRoot)/(2*a));
		return output;
	}
	public static String story(String a, String b){
		String output = (a + " and " + b + " always enjoy their walk to the park on Saturday mornings.");
		return output;
	}
	public static String knockKnockJoke(String a, String b){
		String output = ("Knock Knock\nWho's there?\n" + a + "\n" + a + " who?\n" + b + "\n(Hilarity ensues).");
		return output;
	}
	public static void main (String [] args){
		System.out.println(cube(2)==8);
		System.out.println(cube(1)==1);
		System.out.println(cube(0)==0);
		System.out.println(cube(-2)==-8);

		System.out.println(max(2, 6) == 6);
		System.out.println(max(6, 2) == 6);
		System.out.println(max(-1, 1) == 1);
		System.out.println(max(3, 3) == 3);
		System.out.println(max(9, 7) == 9);

		System.out.println(max(6,2,1) == 6);
		System.out.println(max(9,7, 3) == 9);

		System.out.println(max(6, 4, 2, 1) == 6);
		System.out.println(max(9, 7, 3, 8) == 9);

		System.out.println(average(10, 10, 10, 10) == 10);
		System.out.println(average(10, 5, 0, 5) == 5);
		System.out.println(average(4, 3, 2, 1) == 2.5);

		System.out.println(quadraticRoot(2, -4, 0) == 2);
		System.out.println(quadraticRoot(1, 0, -1) == 1);

		System.out.println(story("David","Freya"));

		System.out.println(knockKnockJoke("Dina", "Dina time"));
		System.out.println("");
		System.out.println(knockKnockJoke("Mary and Abbey", "Mary Christmas and Abbey New Year!"));
	}
}