使用java實現斗地主小游戲。

程序分析：
1、創建撲克牌的實體類Poker，設置四個參數：花色、數字、牌值（判斷大小）、是否地主牌，實現getset方法和構造方法；

2、創建玩家的實體類Player，設置了四個參數： 初始牌集合，排序后牌集合，牌值集合，是否地主，實現getset方法和構造方法；

3、洗牌：循環嵌套花色數組跟數字數組生成52個Poker，手動加入大小王Poker，放進map(int,Poker)里面，利用Collections.shuffle隨機排序map的key，再根據key生成排序后的Poker集合

4、發牌：生成3個玩家對象，拿到洗牌后的集合，前51張牌為玩家牌，后3張為地主牌，在51張牌中隨機一張為地主牌，遍歷玩家牌分配個每一個Player，同時根據玩家牌的牌值生成集合grades存進Player對象中，將grades轉為int數組并進行升序排序，根據grade取得新Poker集合分配給玩家。

完整代碼

Poker類：

package com.company;public class Poker {private String color;private String number;private int grade;boolean isLandowners;public boolean isLandowners() {return isLandowners;}public void setLandowners(boolean landowners) {isLandowners = landowners;}public int getGrade() {return grade;}public void setGrade(int grade) {this.grade = grade;}public String getColor() {return color;}public void setColor(String color) {this.color = color;}public String getNumber() {return number;}public void setNumber(String number) {this.number = number;}public Poker() {}public Poker(String color, String number ,int grade,boolean isLandowners) {this.color = color;this.number = number;this.grade=grade;this.isLandowners=isLandowners;}public String toString() {return this.getColor()+this.getNumber();} }

Player類：

package com.company;import java.util.ArrayList; import java.util.LinkedList;public class Player {private ArrayList<Poker> pokers;private boolean isLandower;private ArrayList<Poker> newPokers;private LinkedList<Integer> grades;public LinkedList<Integer> getGrades() {return grades;}public void setGrades(LinkedList<Integer> grades) {this.grades = grades;}public ArrayList<Poker> getNewPokers() {return newPokers;}public void setNewPokers(ArrayList<Poker> newPokers) {this.newPokers = newPokers;}public boolean isLandower() {return isLandower;}public void setLandower(boolean landower) {isLandower = landower;}public Player() {}public ArrayList<Poker> getPokers() {return pokers;}public void setPokers(ArrayList<Poker> pokers) {this.pokers = pokers;} }

洗牌：

/*洗牌*/public static LinkedList<Poker> getPokerList() {LinkedList<Poker> pokers = new LinkedList<Poker>();LinkedList<Poker> newPokers = new LinkedList<Poker>();ArrayList<Integer> arrayList = new ArrayList<>();int[] arr;/*生成54張撲克牌（Poker對象）*//*用嵌套循環生成從方塊3到黑桃2的Poker對象，放進Poker的LinkedList保證順序*/String[] colors = {"?", "?", "?", "?"};String[] numbers = {"3", "4", "5", "6", "7", "8", "9", "10", "J", "Q", "K", "A", "2"};for (int i = 0; i < numbers.length; i++) {for (int j = 0; j < colors.length; j++) {Poker p = new Poker(colors[j], numbers[i], (4 * i) + j + 1, false);pokers.add(p);}}/*添加大小王*/pokers.add(new Poker("black", "☆", 53, false));pokers.add(new Poker("red", "☆", 54, false));/*將生成的54張撲克牌從1到54放進map*/for (int z = 1; z <= pokers.size(); z++) {map.put(z, pokers.get(z - 1));}/*遍歷Map,將每個Poker對應的key放進 ArrayList<Integer> arrayList */Set<Map.Entry<Integer, Poker>> set = map.entrySet();Iterator it = set.iterator();while (it.hasNext()) {Map.Entry<Integer, Poker> e = (Map.Entry<Integer, Poker>) it.next();arrayList.add(e.getKey());}/*利用Collections.shuffle隨機排序key*/Collections.shuffle(arrayList);/*將亂序后的key對于的Poker放進newPokers里面 */for (Integer i : arrayList) {newPokers.add(map.get(i));}return newPokers;}

發牌：

/*發牌*//*根據玩家人數生成Player，默認num=3*/private static void sentPoker(int num) {/*獲取洗牌后的LinkedList,保證順序*/LinkedList<Poker> Allpokers = getPokerList();ArrayList<Poker> pokers = new ArrayList<>();ArrayList<Poker> BottomPokers = new ArrayList<>();/*生成玩家對象*/for (int i = 0; i < num; i++) {Player p = new Player();players.add(p);}/*前50張牌為玩家牌，后三張為底牌*/for (int p = 0; p < Allpokers.size(); p++) {if (p <= 50) {pokers.add(Allpokers.get(p));} else {BottomPokers.add(Allpokers.get(p));}}/*玩家牌中隨機一張為地主牌*/Random rand = new Random();int s = rand.nextInt(51);pokers.get(s).setLandowners(true);System.out.println("地主牌: " + pokers.get(s));/*根據num生成Player對象*/for (int j = 0; j < num; j++) {/*玩家的牌值集合*/LinkedList<Integer> grades = new LinkedList<>();/*玩家的手牌集合*/ArrayList<Poker> playerPokers = new ArrayList<Poker>();/*根據玩家個數分配玩家牌*/for (int z = j; z < pokers.size(); z = z + num) {playerPokers.add(pokers.get(z));grades.add(pokers.get(z).getGrade());players.get(j).setPokers(playerPokers);players.get(j).setGrades(grades);}/*根據玩家牌中的地主牌設置玩家是否地主*/for (Poker p : players.get(j).getPokers()) {if (p.isLandowners() == true) {players.get(j).setLandower(true);}}/*根據玩家的牌值集合生成數組*/Integer[] gs = new Integer[players.get(j).getGrades().size()];grades.toArray(gs);/*排序數組，由低到高*/Arrays.sort(gs);/*排序后的玩家牌*/ArrayList<Poker> newPokers = new ArrayList<>();for (int g = 0; g < gs.length; g++) {Poker p = map.get(gs[g]);newPokers.add(p);}players.get(j).setNewPokers(newPokers);System.out.println("玩家" + (j + 1) + ": " + players.get(j).getNewPokers() + " 是否地主：" + players.get(j).isLandower());}System.out.print("底牌為： ");for (Poker p : BottomPokers) {System.out.print(p + " ");}}

效果展示

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總結

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