/************************************************************************
*
* $Id: Deck.java,v 1.1 2001/11/05 20:00:22 akhil Exp $
*
* Copyright (c) 2001 Sun Microsystems, Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Sun Microsystems, Inc. for Project JXTA."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Sun", "Sun Microsystems, Inc.", "JXTA" and "Project JXTA"
* must not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact Project JXTA at http://www.jxta.org.
*
* 5. Products derived from this software may not be called "JXTA",
* nor may "JXTA" appear in their name, without prior written
* permission of Sun.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL SUN MICROSYSTEMS OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of Project JXTA. For more
* information on Project JXTA, please see
* .
*
* This license is based on the BSD license adopted by the Apache
* Foundation.
**********************************************************************/
/*
* Created: Tue May 1 2001 by Yael Gavish
*/
package net.jxme.demo.blackjack.dealer;
import java.util.Random;
import java.util.Calendar;
public class Deck
{
Card[] cards;
int nextCard = 0;
public Deck()
{
cards = new Card[52];
for (int suit=0; suit {
for (int number=1; number {
cards[getIndex(suit,number)] = new Card(suit,number);
}
}
}
public Card drawCard()
{
return cards[nextCard++];
}
public void shuffle()
{
long timeSeed = Calendar.getInstance().getTime().getTime();
Random number_generator = new Random(timeSeed);
for (int i=0; i {
// choose first card
int random_number = java.lang.Math.abs(number_generator.nextInt()%52);
int first_suit = random_number%4;
int first_number = random_number%13 + 1; //number range 1-13
// choose second card
random_number = java.lang.Math.abs(number_generator.nextInt()%52);
int second_suit = random_number%4;
int second_number = random_number%13 + 1;
swapCards(getIndex(first_suit, first_number),
getIndex(second_suit, second_number));
}
nextCard = 0;
}
private void swapCards(int first_index, int second_index)
{
Card temp_card = new Card(cards[first_index]);
cards[first_index] = new Card(cards[second_index]);
cards[second_index] = new Card(temp_card);
}
private int getIndex(int suit, int number)
{
return suit*13 + number-1; // for array of 52 cards
}
// DEBUG
public void print()
{
for (int i=0; i {
for (int j=1; j {
cards[getIndex(i,j)].print();
}
}
}
}
