Need help

[rideexpedition]

I have to make the game "War" for my computer science class. We were instructed to use arrays to accomplish this. Once a card from one deck is used, how would I add it to the other persons deck/remove it from mine?

The name of the deck array is playerDeck.
To output a card I have been doing:
System.out.println ("Your card is the " + playerDeck.deck[c]);
c gets incremented by one each time through the while loop.
Let's say that I lose, that the opponents card is higher, how would I remove card "c" from the playerDeck array and add it to the opponents deck array, called compDeck?

I know I am new here, but I appreciate any help in this matter.

[Fubarable]

Welcome to the forum.

Myself, I'd use ArrayLists here not arrays since it is easy to add and remove items from these flexible collections.

Oh, it's considered bad form to cross-post a question in multiple forums. It's frustrating to many of to put in the effort answering a question only to find that we wasted our time, that the question was already answered elsewhere. Your best bet is to choose the one best forum for your question and ask it there.

[Bomber_Will]

I got it to work but before I explain anything, hmm what would happen you your card if you win? You said the opponent's card goes under your deck but then how about your own card?

Edit: I forgot to ask, what happens if there is a tie?

[rideexpedition]

Fubarable - thanks for the advice
Bomber_Will - once I figure out how to do it once I will be able to apply it to the other possibilities. So, is there an easy way to do it?

Thanks for you help.

[Bomber_Will]

Well I put the player deck in a text file and the opponent deck in another text file and then made the program make an array out of it. Then it's just a matter of saying

int c = 0; //Start of deck
int i = 52; //End of deck

while(playerDeck[c] != 0 && compDeck[c] != 0) //Checks to see if both decks have cards left
{
    if(playerDeck[c] > compDeck[c])
    {
       *Place compDeck[c] in a temp variable
       *Place playerDeck[c] to playerDeck[i] where c is the current place in 
the deck and i is the last free space in the array
       *Increase i by 1
       *Place the temp variable into the new playerDeck[i]
       *Print out the result
       *Increase i by 1
       *Increase c by 1
    }

Each * can be replaced by a single line of code, there is probably an easier way but this way should work.

[rideexpedition]

This is what I have so far. I have it in a loop until one person wins, and once I get everything worked out I will put the user prompts back in. There is also a card class and a deck class. playerDeckTotal and opponentDeckTotal are only in there because I could not figure out how to say how many cards were left in a given array.

import java.util.Scanner;
/**
*
* @author (your name)
* @version (a version number or a date)
*/
public class war
{
public static void main (String [] args)
{
Scanner input = new Scanner( System.in );
String response;
String ruleResponse;
String quit;
boolean continueTurn;
int c;
int playerDeckTotal = 52;
int opponentDeckTotal = 52;

Deck playerDeck = new Deck();
playerDeck.shuffle();

Deck compDeck = new Deck();
compDeck.shuffle();

System.out.println ("Do you know how to play?");
System.out.print ("");
ruleResponse = input.nextLine ();
if (ruleResponse.charAt(0) == 'n' || ruleResponse.charAt(0) == 'N')
{
System.out.println ("How do you not know how to play war?");
System.out.println ("Sigh, well I will tell you anyways, insignificant human.");
System.out.println ("Each player starts out with a standard 52 card deck.");
System.out.println ("Each player reveals the top card of their deck.");
System.out.println ("The player with the highest card wins.");
System.out.println ("Two being the lowest, and King being the highest.");
System.out.println ("However, an Ace beats everything.");
System.out.println ("In the event that both players play the same card, a war is started.");
System.out.println ("In a war, both players lay 3 cards facedown, and show the forth card.");
System.out.println ("Whomever has the highest forth card wins the war and all cards in said war.");
System.out.println ("If a player has all of the cards, he or she wins.");
System.out.println ("Let us begin.");
System.out.println ("To quit, type in 'Quit' at any time");
continueTurn = true;
}
else
{
System.out.println ("Good, I have no reason to bore myself with rules.");
System.out.println ("Let us begin then.");
System.out.println ("To quit, type in 'Quit'");
continueTurn = true;
}
c = 1;
int turnNum = 1;
while (playerDeckTotal < 104 && opponentDeckTotal < 104)
{

if (c >= 47)
{
playerDeck.shuffle ();
c =1;
}

System.out.println ("Turn Number " +turnNum);
turnNum ++;
System.out.println ("Your card is the " + playerDeck.deck[c]);
System.out.println ("My card is the " + compDeck.deck[c]);

if (playerDeck.deck[c].number > compDeck.deck[c].number)
{
System.out.println ("You win this time, comrade.");
playerDeckTotal = playerDeckTotal + 1;
opponentDeckTotal = opponentDeckTotal - 1;
System.out.println ("There are " + playerDeckTotal + " cards in your deck");
System.out.println ("I have " + opponentDeckTotal + " cards in my deck");
c++;
}

else
if (playerDeck.deck[c].number < compDeck.deck[c].number)
{
System.out.println ("HA! I win this one, insignificant worm.");
playerDeckTotal = playerDeckTotal - 1;
opponentDeckTotal = opponentDeckTotal + 1;
System.out.println ("There are " + playerDeckTotal + " cards in your deck");
System.out.println ("I have " + opponentDeckTotal + " cards in my deck");
c++;
}

else if (playerDeck.deck[c].number == compDeck.deck[c].number)
{
System.out.println ("HA! Now we war!!");
int x = 1;
int y = 1;
while (x < 4)
{
System.out.println ("The three cards you lay down are " + playerDeck.deck[c + x]);
x++;
}
while (y < 4)
{
System.out.println ("The three cards I lay down are " + compDeck.deck[c + y]);
y++;
}
c = c + 4;
System.out.println ("Your card is " + playerDeck.deck[c]);
System.out.println ("My card is " + compDeck.deck[c]);

if (playerDeck.deck[c].number > compDeck.deck[c].number)
{
System.out.println ("You win this time, comrade.");
playerDeckTotal = playerDeckTotal + 4;
opponentDeckTotal = opponentDeckTotal - 4;
System.out.println ("There are " + playerDeckTotal + " cards in your deck");
System.out.println ("I have " + opponentDeckTotal + " cards in my deck");
c++;
}

else if (playerDeck.deck[c].number < compDeck.deck[c].number)
{
System.out.println ("HA! I win this one, insignificant worm.");
playerDeckTotal = playerDeckTotal - 4;
opponentDeckTotal = opponentDeckTotal + 4;
System.out.println ("There are " + playerDeckTotal + " cards in your deck");
System.out.println ("I have " + opponentDeckTotal + " cards in my deck");
c++;
}
}
}
if (playerDeckTotal == 104)
System.out.println ("I.. I've been beaten. You win. Enjoy life.");
else
System.out.println ("I WIN!! I WIN!! YOU STINK!! BAHAHAHA!! GOOD DAY, SIR!!");
}
}

And I am assuming that there is a much easier way of doing this, so feel free to enlighten me.