Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Redo project 6 using ArrayList.
import java.util.Scanner;
import java.util.*;
public class CardGame {
static Scanner scanner = new Scanner(System.in);
static Random random = new Random();
public static void main(String[] args) {
System.out.println("Welcome to the card game! Here are the instructions:");
System.out.println("- You will randomly draw a card from a deck of 52 cards.");
System.out.println("- The computer will also draw a card from the same deck.");
System.out.println("- If your card has a higher face value, you win. Otherwise, you lose.");
System.out.println("- If your card has the same face value as the computer's card, the suit determines the order.");
int gamesPlayed = 0;
int userWins = 0;
int computerWins = 0;
boolean[] cards = new boolean[52]; // false means the card is available, true means it's been drawn
while (true) {
System.out.println("\nNew game!");
Card userCard = drawCard(cards);
Card computerCard = drawCard(cards);
System.out.println("Your card is " + userCard);
System.out.println("Computer's card is " + computerCard);
int userValue = userCard.getValue();
int computerValue = computerCard.getValue();
if (userValue > computerValue) {
System.out.println("You win!");
userWins++;
} else if (userValue < computerValue) {
System.out.println("You lose!");
computerWins++;
} else {
// same face value, compare suits
int userSuit = userCard.getSuit();
int computerSuit = computerCard.getSuit();
if (userSuit > computerSuit) {
System.out.println("You win!");
userWins++;
} else {
System.out.println("You lose!");
computerWins++;
}
}
gamesPlayed++;
if (gamesPlayed == 26) {
System.out.println("\nYou have played 26 games, which is half of the deck.");
System.out.println("Do you want to shuffle the deck and start a new game? (y/n)");
String answer = scanner.next();
if (answer.equals("y")) {
Arrays.fill(cards, false);
gamesPlayed = 0;
userWins = 0;
computerWins = 0;
} else {
break;
}
} else {
System.out.println("\nDo you want to play another game? (y/n)");
String answer = scanner.next();
if (!answer.equals("y")) {
break;
}
}
}
System.out.println("\nThanks for playing!");
System.out.println("You played " + gamesPlayed + " games.");
System.out.println("You won " + userWins + " times.");
System.out.println("The computer won " + computerWins + " times.");
}
public static Card drawCard(boolean[] cards) {
while (true) {
int suit = random.nextInt(4) + 1;
int value = random.nextInt(13) + 2;
int index = (suit - 1) * 13 + (value - 2);
if (!cards[index]) {
cards[index] = true;
return new Card(suit, value);
}
}
}
public static class Card {
private int suit;
private int value;
public Card(int suit, int value) {
this.suit = suit;
this.value = value;
}
public int getSuit() {
return suit;
}
public int getValue() {
return value;
}
public String toString() {
String suitStr = "";
switch (suit) {
case 1: suitStr = "club"; break;
case 2: suitStr = "diamond"; break;
case 3: suitStr = "heart"; break;
case 4: suitStr = "spade"; break;
}
String valueStr;
switch (value) {
case 11: valueStr = "Jack"; break;
case 12: valueStr = "Queen"; break;
case 13: valueStr = "King"; break;
case 14: valueStr = "Ace"; break;
default: valueStr = Integer.toString(value); break;
}
return valueStr + " of " + suitStr + "s";
}
}
}
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