public set Intersection(set FirstSet, set SecondSet) {
        //Make a new set
        set ThirdSet = new set();

        //Cycle through the first array and compare to the second
        //to see what's in the first and the second
        //add those elements to the third array
        for (int i = 0; i < FirstSet.stuff.size(); i++) {
            int item = FirstSet.stuff.get(i);
            if (SecondSet.stuff.contains(item) == true) {
                ThirdSet.stuff.add(item);
            }
        }

        //Print out the combined set you just made
        System.out.println("\rThe intersecting elements are:");
        for (int i = 0; i < ThirdSet.stuff.size(); i++) {
            int item = ThirdSet.stuff.get(i);
            System.out.print(item + " ");

        }
        System.out.print("\r");

        return ThirdSet;
    }