To be a master.

package com.d313;
/*@author DDC
* @date 2020-3-13 22:00
* */
import java.util.Arrays;
import java.util.Random;

public class PokerDemo {
    public static void main(String[] args) {
        //Poker p=new Poker(3,6);
        //System.out.println(p);
        /*重写Object类中toString()方法后，打印方片7
         p只是一个对象的地址值，所在的类都是默认继承Object类
        System.out.println(p);默认情况下，调用的是toString()方法，打印com.d313.Poker@4554617c*/
        Poker[] cs=new Poker[54];
        int i=0;                          //赋有序新牌，黑红梅方A,2,3..K
        for(int n=0;n<=12;n++){
            cs[i++]=new Poker(0,n);
            cs[i++]=new Poker(1,n);
            cs[i++]=new Poker(2,n);
            cs[i++]=new Poker(3,n);
        }
        cs[i++]=new Poker(4,13);
        cs[i++]=new Poker(4,14);//完整有序新牌，黑红梅方A,2,3..K,小,大王
        Poker[] cs2=Poker.shuffle(cs);     //洗牌
        //System.out.println(Arrays.toString(cs2));
        Users[] uu=new Users[4];
        uu[0]=new Users(101,"Rose");
        uu[1]=new Users(102,"Lucy");
        uu[2]=new Users(103,"Jack");
        uu[3]=new Users(666,"底牌");
        for(int k=0;k<cs2.length-3;k++){
            Poker cs3=cs2[k];
            uu[k%3].provide(cs3);
        }
        Poker csa=cs2[cs.length-3];
        Poker csb=cs2[cs.length-2];
        Poker csc=cs2[cs.length-1];
        uu[3].provide(csa);
        uu[3].provide(csb);
        uu[3].provide(csc);
        System.out.println(uu[0]);
        System.out.println(uu[1]);
        System.out.println(uu[2]);
        System.out.println(uu[3]);
    }
}
class Poker{
    int type;
    int num;
    final String[] TYPE_NAME={"♠","♥","♣","♦",""};
    final String[] NUM_NAME={"A","2","3","4","5","6","7","8","9","10","J","Q","K","小王","大王"};
    public Poker(int type,int num){
        this.type=type;
        this.num=num;
    }
    public static Poker[] shuffle(Poker[] cs){   //洗牌
        Random rd=new Random();
        for(int i=0;i<cs.length;i++){
            int j=rd.nextInt(54);
            Poker t=cs[j];
            cs[j]=cs[i];
            cs[i]=t;
        }
        return cs;
    }
    //重写Object类中toString方法
    public String toString(){
        return TYPE_NAME[type]+NUM_NAME[num];
    }
}
class Users{
    int id;
    String name;
    Poker[] cs={};
    public Users(int id,String name){
        this.id=id;
        this.name=name;
    }
    public void provide(Poker c){  //一张一张轮流发牌到手
        cs=Arrays.copyOf(cs,cs.length+1);
        cs[cs.length-1]=c;
    }
    //重写Object类中toString方法
    public String toString(){
        return id+" "+name+Arrays.toString(cs);
    }
}