diff --git a/s-day04/src/com/inmind/map01/Test08.java b/s-day04/src/com/inmind/map01/Test08.java
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+++ b/s-day04/src/com/inmind/map01/Test08.java
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+package com.inmind.map01;
+
+import java.util.*;
+
+/*
+Collection:单列集合父接口
+List:
+    ArrayList:底层是object[],查询快，增删慢
+    LinkedList：底层是双向链接，查询慢，增删快
+Set:
+    HashSet:底层哈希表，在实现去重的基础上，能够高效查询，HashCode,equals重写
+    LinkedHashSet:底层哈希表+链表，实现Set集合的有序
+Map：
+    HashMap：存取无序的，不可重复的双列集合
+    LinkedhashMap：存取有序，不可重复的双列集合
+-----------------------------------------------------
+Map<Integer,String>
+♠3>♥3>♦3>♣3
+案例介绍
+按照斗地主的规则，完成洗牌发牌的动作。(洗牌打乱Collections.shuffle()只能打乱list集合)
+具体规则：
+组装54张扑克牌将54张牌顺序打乱
+三个玩家参与游戏，三人交替摸牌，每人17张牌，最后三张留作底牌。（创建4个集合，3个玩家，1个底牌）
+查看三人各自手中的牌（按照牌的大小排序）、底牌【自然排序或者比较器Comparable Comparator】
+规则：手中扑克牌从大到小的摆放顺序：大王,小王,2,A,K,Q,J,10,9,8,7,6,5,4,3【打印牌即可】
+
+54键----“大王”
+ */
+public class Test08 {
+    public static void main(String[] args) {
+        String[] nums = {"3", "4", "5", "6", "7", "8", "9", "10", "J", "Q", "K", "A", "2"};
+        String[] colors = {"♦", "♣", "♥", "♠"};
+        //准备54张牌，保存到map中
+        //自己维护牌的序号
+        Map<Integer, String> map = new HashMap<>();
+        //准备一个只保存牌号的List集合
+        ArrayList<Integer> pokerIndexs = new ArrayList<>();
+        int index = 1;
+        for (String num : nums) {
+            for (String color : colors) {
+                String poker = color+num;
+                map.put(index, poker);
+                pokerIndexs.add(index);
+                index++;
+            }
+        }
+        map.put(index++, "小王");
+        pokerIndexs.add(53);
+        map.put(index++, "大王");
+        pokerIndexs.add(54);
+        System.out.println(map);//54张牌
+        System.out.println(pokerIndexs);
+        System.out.println(map.size());
+
+        //洗牌
+        Collections.shuffle(pokerIndexs);
+        System.out.println(pokerIndexs);
+        //（创建4个集合，3个玩家，1个底牌）
+        ArrayList<Integer> play1 = new ArrayList<>();
+        ArrayList<Integer> play2 = new ArrayList<>();
+        ArrayList<Integer> play3 = new ArrayList<>();
+        ArrayList<Integer> dipai = new ArrayList<>();
+        /*
+        玩家1     0       3       6       %3  = 0
+        玩家2     1       4       7       %3  = 1
+        玩家3     2       5       8       %3  = 2
+         */
+        for (int i = 0; i < pokerIndexs.size(); i++) {
+            if (i > 50) {
+                dipai.add(pokerIndexs.get(i));
+            } else {
+                switch (i%3) {
+                    case 0:
+                        play1.add(pokerIndexs.get(i));
+                        break;
+                    case 1:
+                        play2.add(pokerIndexs.get(i));
+                        break;
+                    case 2:
+                        play3.add(pokerIndexs.get(i));
+                        break;
+                }
+            }
+        }
+        showPokers(play1,map);
+        showPokers(play2,map);
+        showPokers(play3,map);
+        showPokers(dipai,map);
+
+    }
+
+    private static void showPokers(ArrayList<Integer> pokerIndexList,Map<Integer, String> pokerMap) {
+        //从大到小展示：降序
+        Collections.sort(pokerIndexList, new Comparator<Integer>() {
+            @Override
+            public int compare(Integer o1, Integer o2) {
+                return o2-o1;
+            }
+        });
+        //将牌号映射为牌面
+        String pokerStr = "";
+        for (Integer index : pokerIndexList) {
+            String poker = pokerMap.get(index);
+            pokerStr += poker + " ";
+        }
+        System.out.println(pokerStr);
+    }
+}