java编写斗地主

斗地主是一款非常经典的扑克牌游戏，下面是一个简单的 Java 实现斗地主的示例代码：

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

public class DouDiZhu {
    private static final int NUM_CARDS = 54;
    private static final int NUM_PLAYERS = 3;
    private static final int NUM_CARDS_EACH = 17;
    private static final int CARD_WIDTH = 5;
    private static final int CARD_HEIGHT = 7;
    private static final int CARD_BLANK = 3;
    private static final String[] CARD_VALUES = {"3", "4", "5", "6", "7", "8", "9", "10", "J", "Q", "K", "A", "2", "小王", "大王"};
    private static final String[] CARD_SUITS = {"♠", "♥", "♣", "♦"};

    private ArrayList<Integer> cards;
    private ArrayList<Integer>[] players;
    private int landlord;
    private Scanner scanner;

    public DouDiZhu() {
        cards = new ArrayList<>();
        players = new ArrayList[NUM_PLAYERS];
        for (int i = 0; i < NUM_PLAYERS; i++) {
            players[i] = new ArrayList<>();
        }
        scanner = new Scanner(System.in);
    }

    public void start() {
        initCards();
        shuffleCards();
        dealCards();
        chooseLandlord();
        playCards();
    }

    private void initCards() {
        for (int i = 0; i < NUM_CARDS; i++) {
            cards.add(i);
        }
    }

    private void shuffleCards() {
        Collections.shuffle(cards, new Random());
    }

    private void dealCards() {
        for (int i = 0; i < NUM_PLAYERS; i++) {
            for (int j = 0; j < NUM_CARDS_EACH; j++) {
                players[i].add(cards.remove(0));
            }
        }
    }

    private void chooseLandlord() {
        System.out.println("请选择地主：");
        System.out.println("1.玩家1");
        System.out.println("2.玩家2");
        System.out.println("3.玩家3");
        int choice = scanner.nextInt();
        while (choice < 1 || choice > 3) {
            System.out.println("选择无效，请重新选择：");
            choice = scanner.nextInt();
        }
        landlord = choice - 1;
        System.out.println("玩家" + (landlord + 1) + "成为了地主，手牌为：");
        printCards(players[landlord]);
    }

    private void playCards() {
        int currentPlayer = landlord;
        boolean gameOver = false;
        while (!gameOver) {
            if (players[currentPlayer].isEmpty()) {
                System.out.println("玩家" + (currentPlayer + 1) + "获胜！");
                gameOver = true;
                break;
            }
            System.out.println("轮到玩家" + (currentPlayer + 1) + "出牌，手牌为：");
            printCards(players[currentPlayer]);
            System.out.print("请输入要出的牌（用逗号分隔，如 1,2,3）：");
            String input = scanner.next();
            String[] cardStrings = input.split(",");
            ArrayList<Integer> cards = new ArrayList<>();
            for (String cardString : cardStrings) {
                try {
                    int card = Integer.parseInt(cardString) - 1;
                    if (card >= 0 && card < players[currentPlayer].size()) {
                        cards.add(players[currentPlayer].get(card));
                        players[currentPlayer].remove(card);
                    }
                } catch (NumberFormatException e) {
                    // ignore
                }
            }
            if (cards.isEmpty()) {
                System.out.println("出牌无效，请重新输入！");
                continue;
            }
            System.out.println("玩家" + (currentPlayer + 1) + "出的牌为：");
            printCards(cards);
            currentPlayer = (currentPlayer + 1) % NUM_PLAYERS;
        }
    }

    private void printCards(ArrayList<Integer> cards) {
        for (int i = 0; i < cards.size(); i++) {
            int card = cards.get(i);
            System.out.print(getCardString(card));
            if (i < cards.size() - 1) {
                System.out.print(",");
            }
        }
        System.out.println();
    }

    private void printCards(int[] cards) {
        for (int i = 0; i < cards.length; i++) {
            System.out.print(getCardString(cards[i]));
            if (i < cards.length - 1) {
                System.out.print(",");
            }
        }
        System.out.println();
    }

    private String getCardString(int card) {
        int value = card / 4;
        int suit = card % 4;
        String result = CARD_VALUES[value] + CARD_SUITS[suit];
        if (value == 13) {
            result = CARD_VALUES[value + suit] + CARD_SUITS[suit];
        }
        return result;
    }

    public static void main(String[] args) {
        DouDiZhu game = new DouDiZhu();
        game.start();
    }
}

这个程序实现了斗地主的基本逻辑，包括初始化牌组、洗牌、发牌、选择地主和出牌等操作。游戏中每个玩家的手牌由一个整数列表表示，每张牌用一个整数表示，整数的值为 0 到 53，分别表示扑克牌的 54 种可能。程序还提供了简单的命令行界面，使玩家可以选择出牌，从而体验斗地主的乐趣。