请用java编写一个简单的麻将小游戏

好的，下面是一个简单的 Java 麻将小游戏的示例代码，其中包含了基本的麻将规则和游戏流程。注意，这只是一个简单的示例，可能并不完美，仅供参考。

import java.util.*;

public class MahjongGame {
    private List<String> tiles; // 所有牌
    private List<String>[] players; // 玩家手牌
    private int currentPlayer; // 当前玩家
    private int[] scores; // 玩家积分
    private String[] windDirections = {"东", "南", "西", "北"}; // 圈风、门风

    public MahjongGame() {
        // 初始化所有牌
        tiles = new ArrayList<>();
        for (int i = 1; i <= 9; i++) {
            for (int j = 1; j <= 4; j++) {
                tiles.add(i + "万");
                tiles.add(i + "筒");
                tiles.add(i + "条");
            }
        }
        for (int i = 1; i <= 4; i++) {
            tiles.add("东风");
            tiles.add("南风");
            tiles.add("西风");
            tiles.add("北风");
            tiles.add("红中");
            tiles.add("发财");
            tiles.add("白皮");
        }

        // 初始化玩家手牌、积分和当前玩家
        players = new ArrayList[4];
        for (int i = 0; i < 4; i++) {
            players[i] = new ArrayList<>();
        }
        scores = new int[4];
        currentPlayer = 0;
    }

    // 洗牌
    public void shuffle() {
        Collections.shuffle(tiles);
    }

    // 发牌
    public void deal() {
        for (int i = 0; i < 4; i++) {
            for (int j = 0; j < 13; j++) {
                players[i].add(tiles.remove(0));
            }
        }
    }

    // 玩家摸牌
    public void drawTile() {
        String tile = tiles.remove(0);
        players[currentPlayer].add(tile);
        System.out.println("玩家" + (currentPlayer + 1) + "摸了一张牌：" + tile);
    }

    // 玩家打牌
    public void discardTile(String tile) {
        if (!players[currentPlayer].remove(tile)) {
            throw new IllegalArgumentException("玩家" + (currentPlayer + 1) + "没有这张牌：" + tile);
        }
        System.out.println("玩家" + (currentPlayer + 1) + "打出了一张牌：" + tile);
        currentPlayer = (currentPlayer + 1) % 4;
    }

    // 判断是否胡牌
    public boolean canWin(List<String> handTiles, String tile) {
        // TODO: 实现判断是否胡牌的算法
        return false;
    }

    // 判断是否杠牌
    public boolean canKong(List<String> handTiles, String tile) {
        // TODO: 实现判断是否杠牌的算法
        return false;
    }

    // 玩家操作
    public void playerAction(String tile) {
        boolean canWin = canWin(players[currentPlayer], tile);
        boolean canKong = canKong(players[currentPlayer], tile);
        Scanner scanner = new Scanner(System.in);

        System.out.println("玩家" + (currentPlayer + 1) + "的手牌：" + players[currentPlayer]);
        System.out.println("玩家" + (currentPlayer + 1) + "可以进行的操作：");
        System.out.println("1. 打牌");
        if (canWin) {
            System.out.println("2. 胡牌");
        }
        if (canKong) {
            System.out.println("3. 杠牌");
        }

        int choice = scanner.nextInt();
        switch (choice) {
            case 1:
                discardTile(tile);
                break;
            case 2:
                if (canWin) {
                    System.out.println("玩家" + (currentPlayer + 1) + "胡了这张牌：" + tile);
                    // TODO: 更新积分
                }
                break;
            case 3:
                if (canKong) {
                    players[currentPlayer].remove(tile);
                    players[currentPlayer].add(tile);
                    players[currentPlayer].add(tile);
                    players[currentPlayer].add(tile);
                    players[currentPlayer].add(tile);
                    System.out.println("玩家" + (currentPlayer + 1) + "杠了这张牌：" + tile);
                    // TODO: 更新积分
                }
                break;
            default:
                throw new IllegalArgumentException("无效的操作");
        }
    }

    // 游戏流程
    public void play() {
        for (int round = 1; round <= 4; round++) { // 四圈
            System.out.println("第" + round + "圈开始了");
            shuffle();
            deal();
            int windDirection = (round - 1) % 4; // 圈风
            int currentPlayer = windDirection; // 庄家
            int tilesLeft = tiles.size(); // 剩余牌数

            while (tilesLeft > 0) {
                String tile = tiles.remove(0);
                tilesLeft--;

                System.out.println("当前剩余牌数：" + tilesLeft);
                System.out.println("当前牌：" + tile);
                playerAction(tile);
            }

            // TODO: 结算
        }
    }

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

这个示例代码只实现了基本的游戏流程和部分操作，还有很多细节需要完善。如果你要开发一个更完整、更复杂的麻将游戏，建议先了解一下麻将规则和算法，再根据实际需求进行设计和开发。