进阶day03-斗地主案例的分析以及Comparable&Comparator的使用
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javaSE-day03/src/com/inmind/comapre05/Poker.java
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javaSE-day03/src/com/inmind/comapre05/Poker.java
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package com.inmind.comapre05;
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public class Poker implements Comparable<Poker>{
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String content; //花色+数字
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Integer num; //对应牌的大小的标记
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public Poker(String content, Integer num) {
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this.content = content;
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this.num = num;
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}
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@Override
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public String toString() {
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return content;
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}
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@Override
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public int compareTo(Poker o) {
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//我-它 升序 ;它-我 降序
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return o.num-this.num;
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}
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}
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101
javaSE-day03/src/com/inmind/comapre05/Test16.java
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javaSE-day03/src/com/inmind/comapre05/Test16.java
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package com.inmind.comapre05;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.Comparator;
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/*
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按照斗地主的规则,完成洗牌发牌的动作。
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具体规则:
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使用54张牌打乱顺序,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。
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分析:
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1.准备54张牌(花色+数字)
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2.洗牌(打乱顺序)
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3.创建3个集合对象保存每个玩家的牌,创建1个集合保存底牌
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4.打印集合的内容
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注意:最后打印牌时,要有排序的效果
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*/
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public class Test16 {
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public static void main(String[] args) {
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//1.准备54张牌(花色+数字)
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String[] colors = {"♣", "♦", "♥", "♠"};
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String[] nums = {"3", "4", "5", "6", "7", "8", "9", "10", "J", "Q", "K", "A", "2"};
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int index = 0;
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//创建一个集合保存牌
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ArrayList<Poker> pokers = new ArrayList<>();
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for (String num : nums) {
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for (String color : colors) {
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String content = color + num;
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pokers.add(new Poker(content,index++));
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}
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}
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pokers.add(new Poker("小王",index++));
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pokers.add(new Poker("大王",index++));
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System.out.println(pokers);
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//2.洗牌(打乱顺序)
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Collections.shuffle(pokers);
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System.out.println("打乱之后:"+pokers);
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//3.创建3个集合对象保存每个玩家的牌,创建1个集合保存底牌
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ArrayList<Poker> player1 = new ArrayList<>();
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ArrayList<Poker> player2 = new ArrayList<>();
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ArrayList<Poker> player3 = new ArrayList<>();
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ArrayList<Poker> dipai = new ArrayList<>();
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/*
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按顺序,轮着抓
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玩家1 0 3 6 index%3 == 0
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玩家2 1 4 7 index%3 == 1
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玩家3 2 5 8 index%3 == 2
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最后三张牌都给底牌
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*/
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for (int i = 0; i < pokers.size(); i++) {
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Poker poker = pokers.get(i);
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//最后三张都给底牌,其他的判断下分别发给我每个玩家
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if (i >= 51) {//最后三张都给底牌
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dipai.add(poker);
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} else {
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switch (i%3) {
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case 0:
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player1.add(poker);
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break;
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case 1:
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player2.add(poker);
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break;
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case 2:
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player3.add(poker);
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break;
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}
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}
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}
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//4.打印集合的内容
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//4.1对每个集合进行排序
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//4.2使用比较器,对原本扑克牌,降序的排序,修改为升序
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Comparator<Poker> comparator = new Comparator<Poker>() {
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@Override
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public int compare(Poker o1, Poker o2) {
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return o1.num - o2.num;
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}
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};
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Collections.sort(player1,comparator);
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Collections.sort(player2,comparator);
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Collections.sort(player3,comparator);
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Collections.sort(dipai,comparator);
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System.out.println("玩家1:"+player1);
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System.out.println("玩家2:"+player2);
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System.out.println("玩家3:"+player3);
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System.out.println("底牌:"+dipai);
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}
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}
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