import java.util.ArrayList;
import java.util.Collections;

/**
 * A DeckOfCards object represents a standard deck of 52 playing cards.
 *   @author Dave Reed 
 *   @version 11/20/06
 */
public class DeckOfCards {
    private ArrayList<Card> deck;

    /**
     * Creates a deck of 52 cards in order.
     */
    public DeckOfCards() {
        this.deck = new ArrayList<Card>();
        
        String suits = "SHDC";
        String ranks = "23456789TJQKA";
        for (int s = 0; s < suits.length(); s++) {
            for (int r = 0; r < ranks.length(); r++) {
                Card c = new Card("" + ranks.charAt(r) + suits.charAt(s));
                this.deck.add(c);
            }
        }
    }

    /**
     * Shuffles the deck so that the locations of the cards are random.
     */
    public void shuffle() {
        Collections.shuffle(this.deck);
    }
   
    /**
     * Deals a card from the top of the deck, removing it from the deck.
     *   @return the card that was at the top (i.e., end of the ArrayList)
     */
    public Card dealCard() {
        return this.deck.remove(this.deck.size()-1);
    }
    
    /**
     * Adds a card to the bottom of the deck.
     *   @param c the card to be added to the bottom (i.e., beginning of the ArrayList)
     */
    public void addCard(Card c) {
        this.deck.add(0, c);
    }
    
    /**
     * Determines the number of cards remaining in the deck.
     *   @return the number of cards
     */
    public int cardsRemaining() {
        return this.deck.size();
    }
    
    /**
     * Returns a string representation of the deck.
     *   @return a String containing all of the cards in order
     */
    public String toString() {
        return this.deck.toString();
    }
}