集合的使用模拟斗地主 - 黑马程序员技术交流社区

import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.Set;
import java.util.TreeMap;
/*
* 模拟斗地主
*/
public class Demo4 {
public static void main(String[] args) {
// 创建牌盒
HashMap<Integer, String> hm = new HashMap<>();
// 创建一个序号集合
ArrayList<Integer> al = new ArrayList<>();
// 创建花色和数值数组
String[] arr1 = { "♦", "♣", "♥", "♠" };
String[] arr2 = { "3", "4", "5", "6", "7", "8", "9", "10", "J", "Q",
"K", "A", "2" };
// 将牌装入牌盒
int num = 0;
for (int i = 0; i < arr2.length; i++) {
for (int j = 0; j < arr1.length; j++) {
num++;
al.add(num);
StringBuilder sb = new StringBuilder();
String s = sb.append(arr1[j]).append(arr2[i]).toString();
hm.put(num, s);
}
}
// 装入大小王
num++;
al.add(num);
hm.put(num, "小王");
num++;
al.add(num);
hm.put(num, "大王");
// 洗牌
Collections.shuffle(al);
// 发牌，创建三个人的手牌
TreeMap<Integer, String> tm1 = new TreeMap<>();
TreeMap<Integer, String> tm2 = new TreeMap<>();
TreeMap<Integer, String> tm3 = new TreeMap<>();
TreeMap<Integer, String> tm4 = new TreeMap<>();
// 发牌
for (int i = 0; i <al.size(); i++) {
if (i >= 51) {
tm4.put(al.get(i), hm.get(al.get(i)));
} else if (i % 3 == 0) {
tm1.put(al.get(i), hm.get(al.get(i)));
} else if (i % 3 == 1) {
tm2.put(al.get(i), hm.get(al.get(i)));
} else if (i % 3 == 2) {
tm3.put(al.get(i), hm.get(al.get(i)));
}
}
// 看牌
look("我", tm1);
look("你", tm2);
look("老师", tm3);
look("底牌", tm4);
}
private static void look(String string, TreeMap<Integer, String> tm1) {
Set<Integer> set = tm1.keySet();
System.out.print(string + "的牌：");
for (Integer i : set) {
String value = tm1.get(i);
System.out.print(value + ",");
}
System.out.println();
}
}

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