Driver.java

import java.io.*;
import java.util.*;

public class Driver {
    public static void main(String[] args) {
    	Loops l; 
    	l = new Loops();

    	System.out.println("-- Tests for Recursive Factorial --");

       	System.out.println(l.fact(-1) + " is -1"); // -1 is defined as output for domain failure
    	  System.out.println(l.fact(0) + " is 1");
       	System.out.println(l.fact(1) + " is 1");
       	System.out.println(l.fact(2) + " is 2");
       	System.out.println(l.fact(3) + " is 6");
       	System.out.println(l.fact(4) + " is 24");
       	System.out.println(l.fact(5) + " is 120");

    	  System.out.println("-- Tests for While Loop Factorial --");

       	System.out.println(l.fact2(-1) + " is -1"); // -1 is defined as output for domain failure
        System.out.println(l.fact2(0) + " is 1");
       	System.out.println(l.fact2(1) + " is 1");
       	System.out.println(l.fact2(2) + " is 2");
       	System.out.println(l.fact2(3) + " is 6");
       	System.out.println(l.fact2(4) + " is 24");
       	System.out.println(l.fact2(5) + " is 120");

        System.out.println("-- Tests for GCD1 --");

        System.out.println(l.gcd(10,5) + " is 5"); // -1 is defined as output for domain failure
        System.out.println(l.gcd(45,80) + " is 5");
        System.out.println(l.gcd(3571,2621) + " is 1");
        System.out.println(l.gcd(5,2) + " is 1");

        System.out.println("-- Tests for GCD2--");

        System.out.println(l.gcd2(10,5) + " is 5"); // -1 is defined as output for domain failure
        System.out.println(l.gcd2(45,80) + " is 5");
        System.out.println(l.gcd2(3571,2621) + " is 1");
        System.out.println(l.gcd2(5,2) + " is 1");

        System.out.println("-- Tests for isPrime --");

        System.out.println(l.isPrime(2) + " is true"); // -1 is defined as output for domain failure
        System.out.println(l.isPrime(3571) + " is true");
        System.out.println(l.isPrime(80) + " is false");
        System.out.println(l.isPrime(56) + " is false");
    }
}