Driver2.java

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

public class Driver2 {

    public static void main (String [] args ) {

        GCD g = new GCD ();
        GCD g2 = new GCD ();
        GCD g3 = new GCD ();

        System.out.println (g.returnGCD (12,8));
        System.out.println (g.returnGCD (25, 5));
        System.out.println (g.returnGCD (29, 3));
        System.out.println (g.returnGCD (3, 91));
        System.out.println (g.returnGCD (12, 40));
        System.out.println (g.returnGCD (49, 140));
	System.out.println ("---------------------");
        System.out.println (g2.returnGCD2 (12,8));
        System.out.println (g2.returnGCD2 (25, 5));
        System.out.println (g2.returnGCD2 (29, 3));
        System.out.println (g2.returnGCD2 (3, 91));
        System.out.println (g2.returnGCD2 (12, 40));
        System.out.println (g2.returnGCD2 (49, 140));
	System.out.println ("---------------------");
        System.out.println (g3.isPrime (2));
        System.out.println (g3.isPrime (1));
        System.out.println (g3.isPrime (0));
        System.out.println (g3.isPrime (7));
        System.out.println (g3.isPrime (20));
        System.out.println (g3.isPrime (99));
        System.out.println (g3.isPrime (117));

    }

}