Question

Please use comment headers to explain each section of code

Answer 1

Code:

Test Class

import java.util.Collections;

/**

* @author

*

*/

public class Test {

/**

   * @param args

   */

public static void main(String args[]) {

Deck deck = new Deck();

System.out.println(deck);

System.out.println("Size of deck is: "+deck.getSizeOfDeck());

deck.shuffle();

System.out.println("Deck after shuffling is "+deck);

Hand hand1 = new Hand();

for(int i = 0; i < 13; i++) {

   hand1.hand.add(deck.dealCard());

      System.out.println("Size of deck after dealing a card to player is "+deck.getSizeOfDeck());

      System.out.println("Hand of player 1 is "+ hand1.getHand());

}

Collections.sort(hand1.hand, new Hand.CardComparator());

}

}

Card Class:

/**

* @author

*

*/

enum SUITE {

HEART,

SPADE,

CLUB,

DIAMOND

}

/**

* @author

*

*/

public class Card {

int rank;

SUITE suite;

/**

   * @param value

   * @param suite

   */

public Card(int value, SUITE suite) {

this.rank = value;

this.suite = suite;

}

/**

   * @return

   */

public int getRank() {

return rank;

}

/**

   * @return

   */

public int getSuite() {

return suite.ordinal();

}

/**

   * @param value

   */

public void setRank(int value) {

this.rank = value;

}

/**

   * @param suite

   */

public void setSuite(SUITE suite) {

this.suite = suite;

}

/* (non-Javadoc)

   * @see java.lang.Object#toString()

   */

@Override

public String toString() {

   char s = Character.MIN_VALUE;

   switch(suite) {

         case DIAMOND:

                 s='\u2666';

                 break;

         case SPADE:

                 s='\u2660';

                 break;

         case HEART:

                 s='\u2665';

                 break;

         case CLUB:

                 s='\u2663';

                 break;

   }

   return "" + rank + s ;

}

}

Deck Class:

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Random;

/**
* @author gopir
*
*/
/**
* @author gopir
*
*/
/**
* @author gopir
*
*/
/**
* @author gopir
*
*/
public class Deck {
List<Card> cards;

public Deck() {
this.cards = new ArrayList<Card>();
for(int value = 1 ; value <= 13 ; value++){
for(SUITE suite : SUITE.values()){
cards.add(new Card(value,suite));
}
}
}

/* (non-Javadoc)
* @see java.lang.Object#toString()
*/
/* (non-Javadoc)
* @see java.lang.Object#toString()
*/
@Override
public String toString() {
return "Deck{" +
"cardDeck=" + cards +
'}';
}

public void shuffle(){
Random rand = new Random();
//Generate two random numbers between 0 to 51
for(int i = 0 ; i < 20 ; i ++){
int card1 = rand.nextInt(52);
int secondCard = rand.nextInt(52);
Collections.swap(cards,card1,secondCard);
}
}

/**
* @return
*/
public Card dealCard(){
Card removedCard = cards.remove(0);
return removedCard;
}

//Size of the deck for testing purpose
/**
* @return
*/
public int getSizeOfDeck(){
return cards.size();
}
}

Hand Class:

import java.util.ArrayList;

import java.util.Comparator;

import java.util.List;

/**

* @author

*

*/

public class Hand implements Comparable<Card>{

   List<Card> hand;

   public Hand() {

       this.hand = new ArrayList<Card>();

   }

   /**

   * @return

   */

   public List<Card> getHand() {

       return hand;

   }

   /* (non-Javadoc)

   * @see java.lang.Object#toString()

   */

   @Override

   public String toString() {

       return "Player{" + "hand=" + hand + '}';

   }

   /**

   * @author

   *

   */

   static class CardComparator implements Comparator<Card> {

       /* (non-Javadoc)

       * @see java.util.Comparator#compare(java.lang.Object, java.lang.Object)

       */

       public int compare(Card p1, Card p2) {

           int rank1 = p1.getRank();

           int suite1 = p1.getSuite();

           int rank2 = p2.getRank();

           int suite2 = p2.getSuite();

          

           if (suite1 == suite2 && rank1 == rank2)

               return 0;

           else if (suite1 == suite2 && rank1 > rank2)

               return 1;

           else

               return -1;

       }

   }

   @Override

   public int compareTo(Card o) {

       return 0;

   }

}

Please add your name whereever javadoc contains author.

Sample output1:

Deck{cardDeck=[1♥, 1♠, 1♣, 1♦, 2♥, 2♠, 2♣, 2♦, 3♥, 3♠, 3♣, 3♦, 4♥, 4♠, 4♣, 4♦, 5♥, 5♠, 5♣, 5♦, 6♥, 6♠, 6♣, 6♦, 7♥, 7♠, 7♣, 7♦, 8♥, 8♠, 8♣, 8♦, 9♥, 9♠, 9♣, 9♦, 10♥, 10♠, 10♣, 10♦, 11♥, 11♠, 11♣, 11♦, 12♥, 12♠, 12♣, 12♦, 13♥, 13♠, 13♣, 13♦]}

Size of deck is: 52

Deck after shuffling is Deck{cardDeck=[1♥, 12♦, 1♣, 3♥, 2♥, 9♣, 2♣, 2♦, 1♦, 3♠, 13♠, 3♦, 1♠, 4♠, 11♣, 6♠, 10♦, 5♠, 8♥, 5♦, 10♥, 4♥, 6♣, 12♠, 12♣, 7♠, 7♣, 7♦, 5♣, 8♠, 10♠, 13♣, 4♦, 9♠, 2♠, 9♦, 8♣, 6♥, 10♣, 11♥, 5♥, 11♠, 9♥, 11♦, 6♦, 12♥, 7♥, 4♣, 13♥, 3♣, 8♦, 13♦]}

Size of deck after dealing a card to player is 51

Hand of player 1 is [1♥]

Size of deck after dealing a card to player is 50

Hand of player 1 is [1♥, 12♦]

Size of deck after dealing a card to player is 49

Hand of player 1 is [1♥, 12♦, 1♣]

Size of deck after dealing a card to player is 48

Hand of player 1 is [1♥, 12♦, 1♣, 3♥]

Size of deck after dealing a card to player is 47

Hand of player 1 is [1♥, 12♦, 1♣, 3♥, 2♥]

Size of deck after dealing a card to player is 46

Hand of player 1 is [1♥, 12♦, 1♣, 3♥, 2♥, 9♣]

Size of deck after dealing a card to player is 45

Hand of player 1 is [1♥, 12♦, 1♣, 3♥, 2♥, 9♣, 2♣]

Size of deck after dealing a card to player is 44

Hand of player 1 is [1♥, 12♦, 1♣, 3♥, 2♥, 9♣, 2♣, 2♦]

Size of deck after dealing a card to player is 43

Hand of player 1 is [1♥, 12♦, 1♣, 3♥, 2♥, 9♣, 2♣, 2♦, 1♦]

Size of deck after dealing a card to player is 42

Hand of player 1 is [1♥, 12♦, 1♣, 3♥, 2♥, 9♣, 2♣, 2♦, 1♦, 3♠]

Size of deck after dealing a card to player is 41

Hand of player 1 is [1♥, 12♦, 1♣, 3♥, 2♥, 9♣, 2♣, 2♦, 1♦, 3♠, 13♠]

Size of deck after dealing a card to player is 40

Hand of player 1 is [1♥, 12♦, 1♣, 3♥, 2♥, 9♣, 2♣, 2♦, 1♦, 3♠, 13♠, 3♦]

Size of deck after dealing a card to player is 39

Hand of player 1 is [1♥, 12♦, 1♣, 3♥, 2♥, 9♣, 2♣, 2♦, 1♦, 3♠, 13♠, 3♦, 1♠]

Sample Output2:

Deck{cardDeck=[1♥, 1♠, 1♣, 1♦, 2♥, 2♠, 2♣, 2♦, 3♥, 3♠, 3♣, 3♦, 4♥, 4♠, 4♣, 4♦, 5♥, 5♠, 5♣, 5♦, 6♥, 6♠, 6♣, 6♦, 7♥, 7♠, 7♣, 7♦, 8♥, 8♠, 8♣, 8♦, 9♥, 9♠, 9♣, 9♦, 10♥, 10♠, 10♣, 10♦, 11♥, 11♠, 11♣, 11♦, 12♥, 12♠, 12♣, 12♦, 13♥, 13♠, 13♣, 13♦]}

Size of deck is: 52

Deck after shuffling is Deck{cardDeck=[7♣, 6♦, 1♣, 4♥, 2♥, 2♠, 3♣, 5♠, 10♥, 10♠, 2♣, 3♦, 13♦, 10♦, 4♣, 4♦, 8♥, 7♦, 6♥, 5♦, 5♣, 6♠, 7♠, 1♠, 7♥, 6♣, 10♣, 2♦, 5♥, 8♠, 8♣, 4♠, 13♠, 9♠, 3♥, 8♦, 9♣, 1♦, 11♥, 9♦, 1♥, 11♠, 11♣, 11♦, 12♥, 12♠, 12♣, 12♦, 13♥, 9♥, 13♣, 3♠]}

Size of deck after dealing a card to player is 51

Hand of player 1 is [7♣]

Size of deck after dealing a card to player is 50

Hand of player 1 is [7♣, 6♦]

Size of deck after dealing a card to player is 49

Hand of player 1 is [7♣, 6♦, 1♣]

Size of deck after dealing a card to player is 48

Hand of player 1 is [7♣, 6♦, 1♣, 4♥]

Size of deck after dealing a card to player is 47

Hand of player 1 is [7♣, 6♦, 1♣, 4♥, 2♥]

Size of deck after dealing a card to player is 46

Hand of player 1 is [7♣, 6♦, 1♣, 4♥, 2♥, 2♠]

Size of deck after dealing a card to player is 45

Hand of player 1 is [7♣, 6♦, 1♣, 4♥, 2♥, 2♠, 3♣]

Size of deck after dealing a card to player is 44

Hand of player 1 is [7♣, 6♦, 1♣, 4♥, 2♥, 2♠, 3♣, 5♠]

Size of deck after dealing a card to player is 43

Hand of player 1 is [7♣, 6♦, 1♣, 4♥, 2♥, 2♠, 3♣, 5♠, 10♥]

Size of deck after dealing a card to player is 42

Hand of player 1 is [7♣, 6♦, 1♣, 4♥, 2♥, 2♠, 3♣, 5♠, 10♥, 10♠]

Size of deck after dealing a card to player is 41

Hand of player 1 is [7♣, 6♦, 1♣, 4♥, 2♥, 2♠, 3♣, 5♠, 10♥, 10♠, 2♣]

Size of deck after dealing a card to player is 40

Hand of player 1 is [7♣, 6♦, 1♣, 4♥, 2♥, 2♠, 3♣, 5♠, 10♥, 10♠, 2♣, 3♦]

Size of deck after dealing a card to player is 39

Hand of player 1 is [7♣, 6♦, 1♣, 4♥, 2♥, 2♠, 3♣, 5♠, 10♥, 10♠, 2♣, 3♦, 13♦]

Sample Screesnhot:

I used comparator to sort it. I added the logic to compare in compareTo method. If suite is same, check the numbers. That's the order. That's why you could see two different order of suites in the above outputs.

In case of any doubts, please comment.