public class Test {

    public static void main (String[] args) {
	Deck deck = Deck.buildDeck ();

	// shuffleDeck is a modifier
	Deck.shuffleDeck (deck);

	// mergeSort is a function.  After the
	// assignment, deck points to a new object
	// and the old one gets collected
	deck = Deck.mergeSort (deck);

	Deck.printDeck (deck);
    }
}