java ->斗地主洗牌

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

 import static java.util.Map.Entry;
 public class DouDiZhu {

     public static void main(String[] args) {
         ArrayList<Integer> pook = new ArrayList<Integer>();
         HashMap<Integer,String> hm =new HashMap<Integer,String>();

         String[] str1 = { "♥","♣","♦","♠"};
         String[] str2 = {"2","A","K","Q","J","10","9","8","7","6","5","4","3"};

         int index = 2;
         for(String s2 :str2) {
             for(String s1 : str1) {
                 hm.put(index, s1+s2);
                 pook.add(index);
                 index++;
             }
         }
         hm.put(0, "大王");
         pook.add(0);
         hm.put(1, "小王");
         pook.add(1);

         Collections.shuffle(pook);

         ArrayList<Integer> player1= new ArrayList<Integer>();
         ArrayList<Integer> player2 = new ArrayList<Integer>();
         ArrayList<Integer> player3 = new ArrayList<Integer>();
         ArrayList<Integer> bottom = new ArrayList<Integer>();

         for (int i = 0; i < pook.size(); i++) {

             if(i < 3) {
                 bottom.add(pook.get(i));
             }else if(i % 3 == 0) {
                 player1.add(pook.get(i));
             }else if(i % 3 == 1) {
                 player2.add(pook.get(i));
             }else if(i % 3 == 2) {
                 player3.add(pook.get(i));
             }

         }
         Collections.sort(player1);
         Collections.sort(player2);
         Collections.sort(player3);
         Collections.sort(bottom);

         look("赌神",hm,player1);

     }

     public static void look(String name,HashMap<Integer,String> ss,ArrayList<Integer> ii) {
         System.out.print(name+"：");
         for(Integer i : ii) {
             System.out.print(ss.get(i)+" ");
         }
         System.out.println();
     }

 }