# help on divide cards into 4 hands and display!

hello there;
I wrote a code to divide 52 cards into 4 hands and try to display them on screen but i have problems. can somebody look at the code and see whats wrong
public class Card{
private int value, suit;

public Card(int val, int s){
value = val;
suit = s;
}
public int getValue(){
return value;
}

public int getSuit(){
return suit;
}

public void setValue(int v){
value = v;
}

public void setSuit(int s){
suit = s;
}

Card [] d = new Card[52];

public Card(){

for (int j = 1; j <= 4; j++){

for (int i = 2;i <= 14;i++){

d[(13*(j-1))+(i-2)] = new Card(i,j,1,1);

}

}

for (int i = 0;i < 52; i++){

Random r = new Random();
int x = (r.nextInt() * i / (52-i)) % 51;

if (x<0)
x = -x;

int t = d[x].getValue();
int s = d[x].getSuit();

d[x].setValue(d[i].getValue());
d[x].setSuit(d[i].getSuit());
d[i].setValue(t);
d[i].setSuit(s);
}

}
public Card getCard(int c) {
return d[c];
}

public Card[] deal(int c) {

Card [] hand = new Card[c];
return hand;

}
/*public class Node
{

private  Node  next;
}
{
private Node prev = null;
private Node cur  = null;

}
*/
public static void main(String[] args)
{
System.Out.println(""+hand)
}

}//END OF CARD CLASS

###### Who is Participating?

Software engineerCommented:
As you can see in the deal() function:
at each moment each card is only at one place: or in the deck or in a hand (like in reality).

theDeck.remove(index);               // Remove it from the deck

I'm not sure if that was the case in your code.
0

Associate Director - Product EngineeringCommented:
>>  d[(13*(j-1))+(i-2)] = new Card(i,j,1,1);

First off, I don't see a Card constructor that takes 4 arguments. What is the problem that you're facing, BTW? Compilation or some exception or unexpected output?
0

Author Commented:

d[(13*(j-1))+(i-2)] = new Card(i,j);

I dont get any output
am I missing some arguments ?
0

Software engineerCommented:
Don't understand why you have a Card constructor like this

public Card(){

for (int j = 1; j <= 4; j++){
for (int i = 2;i <= 14;i++){
d[(13*(j-1))+(i-2)] = new Card(i,j);       // This is filling your deck d[]. Why do you do that in the constructor of one Card???
}
}

for (int i = 0;i < 52; i++){         // What do you try here?

Random r = new Random();
int x = (r.nextInt() * i / (52-i)) % 51;

if (x<0)
x = -x;

int t = d[x].getValue();
int s = d[x].getSuit();

d[x].setValue(d[i].getValue());
d[x].setSuit(d[i].getSuit());
d[i].setValue(t);
d[i].setSuit(s);
}

}
0

Software engineerCommented:
I would expect this as Card class:

Card.java:
-------------

public class Card{

private int value, suit;

public Card(int val, int s){
value = val;
suit = s;
}
public int getValue(){
return value;
}

public int getSuit(){
return suit;
}

public void setValue(int v){
value = v;
}

public void setSuit(int s){
suit = s;
}

}
0

Associate Director - Product EngineeringCommented:
Yeah, I would have the Card class just as much as zzynx has posted, and make the other stuff in another class. Create an array of Card objects in the main () method and store values randomly.
0

Author Commented:
First I edited the code from//*******//

Second, I want to start the program with 52 cards then randomly divides them into 4 hands. Thats all right now what i am trying to accomplish.

the Card constructor should be the Deck in Deck class,
you were right, there shouldnt be a card constructor.

0

Author Commented:
i missed the code.. here is it

public class Card{

private int value, suit;

public Card(int val, int s){
value = val;
suit = s;
}
public int getValue(){
return value;
}

public int getSuit(){
return suit;
}

public void setValue(int v){
value = v;
}

public void setSuit(int s){
suit = s;
}

//*******************//

public class Deck {

Card [] d = new Card[52];

public Deck(){

for (int j = 1; j <= 4; j++){

for (int i = 2;i <= 14;i++){

d[(13*(j-1))+(i-2)] = new Card(i,j,1,1);

}

}

for (int i = 0;i < 52; i++){

Random r = new Random();
int x = (r.nextInt() * i / (52-i)) % 51;

if (x<0)
x = -x;

int t = d[x].getValue();
int s = d[x].getSuit();

d[x].setValue(d[i].getValue());
d[x].setSuit(d[i].getSuit());
d[i].setValue(t);
d[i].setSuit(s);
}
}

public Card getCard(int c){
return d[c];
}

public Card[] deal(int c){

Card [] hand = new Card[c];
return hand;
}

}

/*  public class Node
{

private  Node  next;
}
{
private Node prev = null;
private Node cur  = null;

}
*/

public static void main(String[] args)
{
System.Out.println(""+hand);
}

}//END OF CARD CLASS
0

Author Commented:
wrong arguemnt is this code d[(13*(j-1))+(i-2)] = new Card(i,j,1,1);

it should be d[(13*(j-1))+(i-2)] = new Card(i,j);

0

Software engineerCommented:
This how I would do it (no Deck class needed):

1) Card.java
-----------------
/*
* Card.java
*
*/

/**
*
* @author  zzynx
*/

public class Card{

private int value, suit;

public Card(int val, int s){
value = val;
suit = s;
}
public int getValue(){
return value;
}

public int getSuit(){
return suit;
}

public void setValue(int v){
value = v;
}

public void setSuit(int s){
suit = s;
}

public String toString() {
return "Suit = " + suit + " Value = " + value;
}
}

2) CardGame.java
-----------------------
/*
* CardGame.java
*
*/

import java.util.*;
/**
*
* @author  zzynx
*/
public class CardGame {
List theDeck = new ArrayList(52);
Random r = new Random();

public CardGame() {
// Fill the deck
for (int j = 1; j <= 4; j++)
for (int i = 1;i <= 13;i++)
}

public List deal(int number) {
List hand = new ArrayList();
while (hand.size()<number) {
int index = r.nextInt( theDeck.size() );
theDeck.remove(index);
}
return hand;
}

public void listHand(List hand) {
for (int i=0; i<hand.size(); i++)
System.out.println( ((Card) hand.get(i)) );
}

public static void main(String args[]) {

CardGame cg = new CardGame();
List hand1 = cg.deal(13);
System.out.println("Hand 1 contains:");
cg.listHand(hand1);
List hand2 = cg.deal(13);
System.out.println("Hand 2 contains:");
cg.listHand(hand2);
List hand3 = cg.deal(13);
System.out.println("Hand 3 contains:");
cg.listHand(hand3);
List hand4 = cg.deal(13);
System.out.println("Hand 4 contains:");
cg.listHand(hand4);
}
}

When running the last one you get e.g.:

Hand 1 contains:
Suit = 2 Value = 2
Suit = 4 Value = 9
Suit = 1 Value = 12
Suit = 3 Value = 5
Suit = 1 Value = 4
Suit = 2 Value = 1
Suit = 3 Value = 13
Suit = 3 Value = 12
Suit = 4 Value = 10
Suit = 2 Value = 3
Suit = 2 Value = 10
Suit = 1 Value = 13
Suit = 1 Value = 2
Hand 2 contains:
Suit = 4 Value = 13
Suit = 4 Value = 1
Suit = 1 Value = 8
Suit = 4 Value = 8
Suit = 3 Value = 2
Suit = 3 Value = 10
Suit = 4 Value = 12
Suit = 3 Value = 3
Suit = 1 Value = 5
Suit = 2 Value = 6
Suit = 3 Value = 11
Suit = 2 Value = 12
Suit = 1 Value = 6
Hand 3 contains:
Suit = 4 Value = 4
Suit = 1 Value = 3
Suit = 3 Value = 8
Suit = 4 Value = 3
Suit = 3 Value = 1
Suit = 4 Value = 11
Suit = 4 Value = 6
Suit = 4 Value = 2
Suit = 3 Value = 7
Suit = 2 Value = 11
Suit = 2 Value = 13
Suit = 1 Value = 1
Suit = 1 Value = 9
Hand 4 contains:
Suit = 4 Value = 5
Suit = 4 Value = 7
Suit = 2 Value = 5
Suit = 1 Value = 11
Suit = 2 Value = 8
Suit = 3 Value = 6
Suit = 2 Value = 7
Suit = 2 Value = 4
Suit = 2 Value = 9
Suit = 3 Value = 4
Suit = 3 Value = 9
Suit = 1 Value = 7
Suit = 1 Value = 10
0

Author Commented:
what I am trying to do is sort of HEARTS GAME but I am not going to code how to score and how to pass left then right then no pass. by the first step what I am doin is to divide 52 cards into 4 players then I will you a class "Node" to stor them, then I will use linklist to structure those nodes. : )

0

Software engineerCommented:
Also I used array lists instead of arrays. Hope you don't mind ;°)
I think you don't since Node contains 4 lists.
0

Software engineerCommented:

List hand1 = cg.deal(13);

you could write

node.setList1( cg.deal(13) );

with node an instance of your Node class having a setList1() function like

public void setList1(List lst) { list1 = lst; }
0

Author Commented:
your code is much clear to me and it gave me much exlpanation. now my job is to implement linklists and try to use them. such as a linklist of Card for players ( north south west east). : )

thanks zzynx
0

Software engineerCommented:
:°)
0

Author Commented:
so this would be my Node class?

public class Node{

private  Node  node1;
private  Node  node2;
private  Node  node3;
private  Node  node4;

public void setList1(List lst) {
list1 = lst;
}
public void setList2(List lst2) {
list2 = lst2;
}
public void setList1(List lst3) {
list3 = lst3;
}public void setList1(List lst4) {
list4 = lst4;
}

}

how is that ?
0

Associate Director - Product EngineeringCommented:
I see that you have Node members in your class and not Lists, but your constructors accept List arguments and try to set them on members (which are also not defined in your class :-) )
0

Software engineerCommented:

setList3() and setList4() you meant I suppose?

private Node nodex;

I guess you meant

private List listx;

Right? ;°)
0

Author Commented:

thanks again
0

Software engineerCommented:
Do you really need *Linked*List's? Or is a "simple" List OK? You decide.

BTW:
If you want a more "human" printout change the Card's class toString() function to this:

public String toString() {
StringBuffer cardDescription = new StringBuffer();
switch(value) {
case 1 : cardDescription.append("Ace"); break;
case 11 : cardDescription.append("Jack"); break;
case 12 : cardDescription.append("????"); break;      // <<<<<<<<<<<< replace please. Don't know in English ;°)
case 13 : cardDescription.append("King"); break;
default :
cardDescription.append( value + "" );
break;
}
cardDescription.append(" of ");
switch(suit) {
case 1 : cardDescription.append("Hearts"); break;
case 3 : cardDescription.append("Diamonds"); break;
case 4 : cardDescription.append("??????"); break;      // <<<<<<<<<<<< replace please. Don't know in English ;°)
}
return cardDescription.toString();
}
0

Software engineerCommented:
Thanks. You're welcome.
0

Author Commented:
hellow zzynx ;
I  submitted new question because it is unfair to answer two questions in one : )
thanks
0

Associate Director - Product EngineeringCommented:
>> case 12 : cardDescription.append("????"); break;      // <<<<<<<<<<<< replace please. Don't know in English ;°)

Queen :-)

>> case 4 : cardDescription.append("??????"); break;      // <<<<<<<<<<<< replace please. Don't know in English ;°)

Clubs.
0

Author Commented:
u r welcome to answer the second one. : )
0
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