【HashMap】斗地主发牌综合案例(玩家牌有序)

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案例接收

需求：

按照斗地主的规则，完成洗牌发牌的动作。

具体规则：

1. 组装54张扑克牌
2. 将54张牌顺序打乱
3. 三个玩家参与游戏，三人交替摸牌，每人17张牌，后(或前)三张留作底牌。
4. 查看三人各自手中的牌（按照牌的大小排序）、底牌

规则：手中扑克牌从大到小的摆放顺序：大王,小王,2,A,K,Q,J,10,9,8,7,6,5,4,3

代码实现

public class Demo02 {
    public static void main(String[] args) {
        int pokerNum = 54;
        //1.生成扑克牌,并用Map集合存储扑克和其索引
        String[] color = {"♠", "♣", "♥", "♦"};
        String[] number = {"2", "A", "K", "Q", "J", "10", "9", "8", "7", "6", "5", "4", "3"};
        HashMap<Integer, String> pokers = new HashMap<>();
        pokers.put(0,"大王");
        pokers.put(1, "小王");
        //设置扑克牌的索引(注意将遍历number放在遍历color的上面)
        int index = 2;
        for (int j = 0; j < number.length; j++) {
            for (int i = 0; i < color.length; i++) {
                String poker = color[i] + number[j];
                pokers.put(index, poker);
                index++;
            }
        }
        //设置三个玩家和底牌
        ArrayList<Integer> player01 = new ArrayList<>();
        ArrayList<Integer> player02 = new ArrayList<>();
        ArrayList<Integer> player03 = new ArrayList<>();
        ArrayList<Integer> diPai = new ArrayList<>();
        //2.洗牌（洗索引）
        ArrayList<Integer> listPoker = new ArrayList<>();
        Set<Map.Entry<Integer, String>> entries = pokers.entrySet();
        for (Map.Entry<Integer, String> entry : entries) {
            Integer key = entry.getKey();
            listPoker.add(key);
        }
        //洗牌
        Collections.shuffle(listPoker);
        //3.发牌--底牌3张，玩家1，2，3为17张，17张，17张，且轮流抽牌
        for (int i = 0; i < pokerNum; i++) {
            if (i == 0 || i == 1 || i == 2) {
                diPai.add(listPoker.get(i));
            }else if(i%3 == 0){
                player01.add(listPoker.get(i));
            }else if(i%3 == 1){
                player02.add(listPoker.get(i));
            }else if(i%3 == 2){
                player03.add(listPoker.get(i));
            }
        }
//        System.out.println(diPai);
//        System.out.println(player01);
//        System.out.println(player02);
//        System.out.println(player03);
        //对玩家1，玩家2和玩家3的牌进行排序
        Collections.sort(player01);
        Collections.sort(player02);
        Collections.sort(player03);

        ArrayList<String> player01Pokers = new ArrayList<>();
        ArrayList<String> player02Pokers = new ArrayList<>();
        ArrayList<String> player03Pokers = new ArrayList<>();
        ArrayList<String> diPaiPokers = new ArrayList<>();
        //通过索引获取扑克
        for (Integer paiIndex : player01) {
             player01Pokers.add(pokers.get(paiIndex));
        }
        for (Integer paiIndex : player02) {
            player02Pokers.add(pokers.get(paiIndex));
        }
        for (Integer paiIndex : player03) {
            player03Pokers.add(pokers.get(paiIndex));
        }
        for (Integer paiIndex : diPai) {
            diPaiPokers.add(pokers.get(paiIndex));
        }
        //4.看牌
        System.out.println("底牌:"+diPaiPokers);
        System.out.println("玩家01:"+player01Pokers);
        System.out.println("玩家02:"+player02Pokers);
        System.out.println("玩家03:"+player03Pokers);
    }
}