Java 21 点游戏：在线体验牌桌对决

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

public class BlackjackGame { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); Random random = new Random();

    System.out.println('游戏开始');

    // 初始化牌堆
    List<Integer> deck = new ArrayList<>();
    for (int i = 1; i <= 10; i++) {
        for (int j = 0; j < 4; j++) {
            deck.add(i);
        }
    }

    // 发牌
    int userTotal = 0;
    int computerTotal = 0;
    System.out.println('用户玩家发牌：' + dealCard(deck));
    userTotal += dealCard(deck);
    System.out.println('用户玩家点数：' + userTotal);
    while (true) {
        System.out.println('是否要牌：1要牌，2不要牌');
        int choice = scanner.nextInt();
        if (choice == 1) {
            int card = dealCard(deck);
            System.out.println('用户玩家发牌：' + card);
            userTotal += card;
            System.out.println('用户玩家点数：' + userTotal);
            if (userTotal > 21) {
                System.out.println('用户玩家爆了');
                System.out.println('电脑玩家点数：' + computerTotal);
                System.out.println('电脑玩家胜');
                return;
            }
        } else if (choice == 2) {
            System.out.println('用户玩家点数：' + userTotal);
            break;
        } else {
            System.out.println('无效的输入，请重新输入');
        }
    }

    // 电脑玩家要牌
    System.out.println('电脑玩家发牌：' + dealCard(deck));
    computerTotal += dealCard(deck);
    System.out.println('电脑玩家点数：' + computerTotal);
    while (computerTotal < 17) {
        System.out.println('要牌');
        int card = dealCard(deck);
        System.out.println('电脑玩家发牌：' + card);
        computerTotal += card;
        System.out.println('电脑玩家点数：' + computerTotal);
    }
    if (computerTotal > 21) {
        System.out.println('电脑玩家爆了');
        System.out.println('用户玩家胜');
    } else if (computerTotal > userTotal) {
        System.out.println('电脑玩家胜');
    } else if (computerTotal < userTotal) {
        System.out.println('用户玩家胜');
    } else {
        System.out.println('平局');
    }
}

private static int dealCard(List<Integer> deck) {
    int index = random.nextInt(deck.size());
    int card = deck.get(index);
    deck.remove(index);
    return card;
}

}