斗地主的洗牌和发牌

斗地主的洗牌和发牌

思路：用Collections的shuffle()方法进行洗牌。用Collections的sort()方法实现牌的有序展示。用List存牌的id，用map存储id和内容之间的映射。代码如下：

package com.zmysna.test03;

import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;

public class Test04 {
    private static HashMap<Integer, String> map = new HashMap<>();
    public static void main(String[] args) {
        String[] colors = "♥‐♠‐♦‐♣".split("‐");
        String[] nums = "2‐A‐K‐Q‐J‐10‐9‐8‐7‐6‐5‐4‐3".split("‐");
        int index = 2;
        ArrayList<Integer> pokers = new ArrayList<>();
        for(int i = 0; i < nums.length; i++){
            for (int j = 0; j < colors.length; j++) {
                map.put(index++, colors[j] + nums[i]);
            }
        }
        map.put(0, "大王");
        map.put(1, "小王");
        for(int i = 0; i < 54; i++){
            pokers.add(i);
        }
        //洗牌
        Collections.shuffle(pokers);

        //发牌
        List<Integer> player01 = new ArrayList<>();
        List<Integer> player02 = new ArrayList<>();
        List<Integer> player03 = new ArrayList<>();
        List<Integer> dipai = new ArrayList<>();
        for(int i = 0; i < pokers.size(); i++){
            if(i >= 51) dipai.add(pokers.get(i));
            else if(i % 3 == 0) player01.add(pokers.get(i));
            else if(i % 3 == 1) player02.add(pokers.get(i));
            else if(i % 3 == 2) player03.add(pokers.get(i));
        }

        showPokers(player01);
        showPokers(player02);
        showPokers(player03);
        showPokers(dipai);
    }
    private static void showPokers(List<Integer> list){
        //将牌排序
        Collections.sort(list);
        for (int i = 0; i < list.size(); i++) {
            System.out.print(map.get(list.get(i)));
            if(i != list.size() - 1) System.out.print(", ");
        }
        System.out.println();
    }
}