洗牌算法

package demo_map;

import java.util.*;

public class Doudizhu_map {
    public static void main(String[] args) {
        List<String> list1=List.of("color joker","black joker");
        List<String> list01=List.of("♣","♠","♥","♦");
        List<String> list02=List.of("2","A","K","Q","J","10","9","8","7","6","5","4","3");




        HashMap<Integer,String> h1=new HashMap<>();
        int count=0;
        h1.put(count++,"color joker");
        h1.put(count++,"black joker");
        for (String numbers:list02) {
            for (String color:list01) {
                String card=color+numbers;
                h1.put(count++,card);
            }

        }
        Set<Integer> set=h1.keySet();
        List<Integer> numList=new ArrayList<Integer>();
        numList.addAll(set);
        System.out.println(numList.toString());
        Collections.shuffle(numList);

        //zhuangpai

        ArrayList<Integer> gamer1=new ArrayList<>();
        ArrayList<Integer> gamer2=new ArrayList<>();
        ArrayList<Integer> gamer3=new ArrayList<>();
        ArrayList<Integer> rest=new ArrayList<>();


        for(int key=0;key<numList.size();key++){

            if(key>50){

                rest.add(numList.get(key));
            }else if(key%3==0){
                gamer1.add(numList.get(key));
            }else if(key%3==1){
                gamer2.add(numList.get(key));
            }else if (key%3==2){
                gamer3.add(numList.get(key));
            }
        }
        Collections.sort(rest);

        Collections.sort(gamer1);
        System.out.println(gamer1);
        Collections.sort(gamer2);
        Collections.sort(gamer3);

        LinkedHashMap<Integer,String> restm=new LinkedHashMap<>();
        for (int i = 0; i <rest.size() ; i++) {
            restm.put(rest.get(i),h1.get(rest.get(i)));
        }

        LinkedHashMap<Integer,String> gamer1m=new LinkedHashMap<>();
        for (int i = 0; i <gamer1.size(); i++) {
            gamer1m.put(gamer1.get(i),h1.get(gamer1.get(i)));
        }
        LinkedHashMap<Integer,String> gamer2m=new LinkedHashMap<>();
        for (int i = 0; i <gamer2.size() ; i++) {
            gamer2m.put(gamer2.get(i),h1.get(gamer2.get(i)));
        }
        LinkedHashMap<Integer,String> gamer3m=new LinkedHashMap<>();
        for (int i = 0; i <gamer3.size() ; i++) {
            gamer3m.put(gamer3.get(i),h1.get(gamer3.get(i)));
        }
        System.out.println(restm.toString());
        System.out.println(gamer1m.toString());
        System.out.println(gamer2m.toString());
        System.out.println(gamer3m.toString());
        //排序




    }
}