集合模拟斗地主洗牌和发牌

一、洗牌发牌（牌未排序）

public static void main(String[] args) {
   //1,买一副扑克,其实就是自己创建一个集合对象,将扑克牌存储进去
   String[] num = {"A","2","3","4","5","6","7","8","9","10","J","Q","K"};
   String[] color = {"红桃","黑桃","方片","梅花"};
   ArrayList<String> poker = new ArrayList<>();
   
   //拼接花色和数字
   for(String s1 : color) {
      for(String s2 : num) {
         poker.add(s1.concat(s2));        //concat连接两个字符串
      }
   }
   poker.add("小王");
   poker.add("大王");
   //2,洗牌
   Collections.shuffle(poker);
   //3,发牌
   ArrayList<String> gaojin = new ArrayList<>();
   ArrayList<String> longwu = new ArrayList<>();
   ArrayList<String> me = new ArrayList<>();
   ArrayList<String> dipai = new ArrayList<>();
   
   for(int i = 0; i < poker.size(); i++) {
      if(i >= poker.size() - 3) {
         dipai.add(poker.get(i));               //将三张底牌存储在底牌集合中
      } else if(i % 3 == 0) {
         gaojin.add(poker.get(i));
      } else if(i % 3 == 1) {
         longwu.add(poker.get(i));
      } else {
         me.add(poker.get(i));
      }
   }
   
   //4,看牌
   System.out.println(gaojin);
   System.out.println(longwu);
   System.out.println(me);
   System.out.println(dipai);
}

二、洗牌发牌（牌排序）

1.代码

public static void main(String[] args) {
   //1,买一副扑克,其实就是自己创建一个集合对象,将扑克牌存储进去
   String[] num = {"3","4","5","6","7","8","9","10","J","Q","K","A","2"};
   String[] color = {"红桃","黑桃","方片","梅花"};
   HashMap<Integer, String> hm = new HashMap<>();             //存储索引和扑克牌
   ArrayList<Integer> list = new ArrayList<>();               //存储索引
   int index = 0;
   
   //拼接扑克牌并索引和扑克牌存储在hm中
   for(String s1 : num) {                               //获取数字
      for(String s2 : color) {                           //获取颜色
         hm.put(index, s2.concat(s1));
         list.add(index);                              //将索引0到51添加到list集合中
         index++;
      }
   }
   //将小王添加到双列集合中
   hm.put(index, "小王");
   list.add(index);                                    //将52索引添加到集合中
   index++;
   hm.put(index, "大王");
   list.add(index);                                    //将53索引添加到集合中
   
   //2,洗牌
   //对于扑克的洗牌，其实就是对于索引的变换
   Collections.shuffle(list);
   //3,发牌
   TreeSet<Integer> gaojin = new TreeSet<>();
   TreeSet<Integer> longwu = new TreeSet<>();
   TreeSet<Integer> me = new TreeSet<>();
   TreeSet<Integer> dipai = new TreeSet<>();
   
   for(int i = 0; i < list.size(); i++) {
      if(i >= list.size() - 3) {
         dipai.add(list.get(i));                      //将三张底牌存储在底牌集合中
      }else if(i % 3 == 0) {
         gaojin.add(list.get(i));
      }else if(i % 3 == 1) {
         longwu.add(list.get(i));
      }else {
         me.add(list.get(i));
      }
   }
   
   //看牌
   lookPoker(hm, gaojin, "高进");
   lookPoker(hm, longwu, "龙五");
   lookPoker(hm, me, "冯佳");
   lookPoker(hm, dipai, "底牌");
}
/*
 * 看牌
 * 1,返回值类型void
 * 2,参数列表HashMap,TreeSet,String name
 */
public static void lookPoker(HashMap<Integer, String> hm,TreeSet<Integer> ts ,String name) {
   System.out.print(name + "的牌是:");
   for(Integer i : ts) {                 //i代表双列集合中的每一个键
      System.out.print(hm.get(i) + " ");
   }
   System.out.println();
}

2.图解