GCD

package practice;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Dictionary;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Scanner;
import java.util.stream.Collectors;

public class rough
{
	public static void main(String args[]) 
	{
        int n1 = 30, n2 = 15;
        List<Integer> list = new ArrayList<>();

        for(int i = 1; i < n1 && i < n2; ++i)
        {
            // Checks if i is factor of both integers
            if(n1 % i==0 && n2 % i==0)
                list.add(i);
        }
        Iterator iterate = list.iterator();
        while(iterate.hasNext())
        	System.out.print(iterate.next()+"\t");
	}
}