ctrl+shift+/:多行注释

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第一版：

App:

package game;public class App {public static void main(String[] args) {new PokerGame();}
}

package game;import java.util.ArrayList;
import java.util.Collections;public class PokerGame {//存储牌static ArrayList<String> list = new ArrayList<>();static {//准备牌String[] color = {"♠", "♥", "♦", "♣"};String[] number = {"3", "4", "5", "6", "7", "8", "9", "10", "J", "Q", "K", "A", "2"};for (String s : color) {for (String string : number) {list.add(s + string);}}list.add("大王");list.add("小王");}PokerGame() {//洗牌Collections.shuffle(list);//发牌ArrayList<String> lord = new ArrayList<>();ArrayList<String> player1 = new ArrayList<>();ArrayList<String> player2 = new ArrayList<>();ArrayList<String> player3 = new ArrayList<>();for (int i = 0; i < list.size(); i++) {if (i <= 2) {lord.add(list.get(i));continue;}if (i % 3 == 0) {player1.add(list.get(i));} else if (i % 3 == 1) {player2.add(list.get(i));} else {//注意：不能写 i % 3 == 1player3.add(list.get(i));}}//看牌lookPoker("底牌", lord);lookPoker("player1", player1);lookPoker("player2", player2);lookPoker("player3", player3);}//参数//玩家姓名//牌public static void lookPoker(String name, ArrayList<String> list) {System.out.print(name + ":");for (String poker : list) {System.out.print(poker + " ");}System.out.println();}
}

第二版：利用序号对牌进行排序

App：

package gameSort;public class App {public static void main(String[] args) {new PokerGame();}
}

package gameSort;import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.TreeSet;public class PokerGame {//存储每张牌及其对应的序号static HashMap<Integer, String> hm = new HashMap<>();//存的是有序数字，为了模拟每张牌，发牌时用的也是这个数字static ArrayList<Integer> list = new ArrayList<>();static {String[] color = {"♠", "♥", "♣", "♦"};String[] number = {"3", "4", "5", "6", "7", "8", "9", "10", "J", "Q", "K", "A", "2"};int startNumber = 1;//number要在外循环，这样可以保证不同花色的同一张牌价值是相近的for (String n : number) {for (String c : color) {hm.put(startNumber, c + n);list.add(startNumber);startNumber++;}}hm.put(startNumber, "大王");list.add(startNumber);startNumber++;hm.put(startNumber, "小王");list.add(startNumber);}PokerGame() {//洗牌Collections.shuffle(list);//发牌(使用treeSet可以直接排序)TreeSet<Integer> lord = new TreeSet<>();TreeSet<Integer> player1 = new TreeSet<>();TreeSet<Integer> player2 = new TreeSet<>();TreeSet<Integer> player3 = new TreeSet<>();for (int i = 0; i < list.size(); i++) {Integer serialNumber = list.get(i);if (i <= 2) {lord.add(serialNumber);continue;}if (i % 3 == 0) {player1.add(serialNumber);} else if (i % 3 == 1) {player2.add(serialNumber);} else {player3.add(serialNumber);}}//看牌lookPoker("底牌", lord);lookPoker("玩家1", player1);lookPoker("玩家2", player2);lookPoker("玩家3", player3);}/** 参数一：玩家姓名* 参数二：牌的序号* */public static void lookPoker(String name, TreeSet<Integer> list) {System.out.print(name + ":");for (Integer i : list) {//根据数字找对应的牌String s = hm.get(i);System.out.print(s + " ");}System.out.println();}
}

第三版：利用牌的价值进行排序

App

package game3;public class App {public static void main(String[] args) {new PokerGame();}
}

package game3;import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;//利用牌的价值排序
public class PokerGame {//存牌static ArrayList<String> list = new ArrayList<>();//存牌及其对应的价值static HashMap<String, Integer> hm = new HashMap<>();static {//准备牌String[] color = {"♠", "♥", "♦", "♣"};String[] number = {"3", "4", "5", "6", "7", "8", "9", "10", "J", "Q", "K", "A", "2"};for (String s : color) {for (String string : number) {list.add(s + string);}}//需要在汉字前面加一个空格，以免getValue截取不到完整的“大王”\“小王”list.add(" 大王");list.add(" 小王");//给牌添加价值，3~10直接由字符串转换成Integer类型即可，减少复杂性hm.put("J", 11);hm.put("Q", 12);hm.put("K", 13);hm.put("A", 14);hm.put("2", 15);hm.put("大王", 50);hm.put("小王", 100);}PokerGame() {//洗牌Collections.shuffle(list);//发牌ArrayList<String> lord = new ArrayList<>();ArrayList<String> player1 = new ArrayList<>();ArrayList<String> player2 = new ArrayList<>();ArrayList<String> player3 = new ArrayList<>();for (int i = 0; i < list.size(); i++) {if (i <= 2) {lord.add(list.get(i));continue;}if (i % 3 == 0) {player1.add(list.get(i));} else if (i % 3 == 1) {player2.add(list.get(i));} else {//注意：不能写 i % 3 == 1player3.add(list.get(i));}}//排序order(lord);order(player1);order(player2);order(player3);//看牌lookPoker("底牌", lord);lookPoker("player1", player1);lookPoker("player2", player2);lookPoker("player3", player3);}//利用牌的价值进行排序//参数：集合public void order(ArrayList<String> list) {Collections.sort(list, new Comparator<String>() {@Overridepublic int compare(String o1, String o2) {//o1:表示当前要插入到有序序列中的牌//o2:表示已经在有序序列中存在的牌//负数：o1小 插到前面//正数：o2大 插到后面//0：o1的数字和o2是一样大的，需要按照花色再次排序//1.计算o1花色和价值String color1 = o1.substring(0, 1);int value1 = getValue(o1);//2.计算o2花色和价值String color2 = o2.substring(0, 1);int value2 = getValue(o2);//比较o1和o2的价值int i = value1 - value2;return i == 0 ? color1.compareTo(color2) : i;}});}//计算牌的价值//参数：牌//返回值:价值public int getValue(String poker) {//获取牌上的数字String number = poker.substring(1);//拿着数字到map集合中判断是否存在if (hm.containsKey(number)) {//存在，获取价值return hm.get(number);} else {//不存在，类型转换return Integer.parseInt(number);}}public static void lookPoker(String name, ArrayList<String> list) {System.out.print(name + ":");for (String poker : list) {System.out.print(poker + " ");}System.out.println();}
}