前言
学习了关于集合类的知识,我们可以做一个小项目来加深对集合类知识的学习!
一、项目要求
二、具体实现
2.1 card类
class card { private int rank;//数字 private string suit;//花色 public card(int rank, string suit) { this.rank = rank; this.suit = suit; } @override public string tostring() { return "[ " + this.suit + ":"+this.rank+" ]"; } }
2.2 生成扑克牌
private static final string[] suits = {"♥", "♠", "♣", "♦"}; //假设没有大小王:1 2 3............. 11 12 13 public static list<card> buycard() { arraylist<card> cards = new arraylist<>(); for (int i = 0; i < 4; i++) { for (int j = 1; j <= 13; j++) { // string suit = suits[i]; // int rank = j; // card card = new card(rank, suit); // cards.add(card); cards.add(new card(j,suits[i])); } } return cards; }
2.3 打乱顺序
private static void swap(list<card> cards, int i, int j) { card tmp = cards.get(i); cards.set(i,cards.get(j)); cards.set(j,tmp); } //洗牌 public static void shuffle(list<card> cards) { int size = cards.size(); for (int i = size-1; i > 0 ; i--) { random random = new random(); int rand = random.nextint(i); swap(cards, i, rand); } }
2.4 发牌
system.out.println("揭牌:3个人每个人轮流揭牌5张牌"); arraylist<list<card>> hand = new arraylist<>(); list<card> hand1 = new arraylist<>(); list<card> hand2 = new arraylist<>(); list<card> hand3 = new arraylist<>(); hand.add(hand1); hand.add(hand2); hand.add(hand3); //每个人,轮流揭牌 for (int i = 0; i < 5; i++) { for (int j = 0; j < 3; j++) { card card = cards.remove(0); hand.get(j).add(card); } }
三、test.java
import java.util.arraylist; import java.util.list; import java.util.random; class card { private int rank;//数字 private string suit;//花色 public card(int rank, string suit) { this.rank = rank; this.suit = suit; } @override public string tostring() { return "[ " + this.suit + ":"+this.rank+" ]"; } } public class test1 { private static final string[] suits = {"♥", "♠", "♣", "♦"}; //假设没有大小王:1 2 3............. 11 12 13 public static list<card> buycard() { arraylist<card> cards = new arraylist<>(); for (int i = 0; i < 4; i++) { for (int j = 1; j <= 13; j++) { // string suit = suits[i]; // int rank = j; // card card = new card(rank, suit); // cards.add(card); cards.add(new card(j,suits[i])); } } return cards; } private static void swap(list<card> cards, int i, int j) { card tmp = cards.get(i); cards.set(i,cards.get(j)); cards.set(j,tmp); } //洗牌 public static void shuffle(list<card> cards) { int size = cards.size(); for (int i = size-1; i > 0 ; i--) { random random = new random(); int rand = random.nextint(i); swap(cards, i, rand); } } public static void main(string[] args) { list<card> cards = buycard(); system.out.println("买牌:" + cards); shuffle(cards); system.out.println("洗牌:" + cards); system.out.println("揭牌:3个人每个人轮流揭牌5张牌"); arraylist<list<card>> hand = new arraylist<>(); list<card> hand1 = new arraylist<>(); list<card> hand2 = new arraylist<>(); list<card> hand3 = new arraylist<>(); hand.add(hand1); hand.add(hand2); hand.add(hand3); //每个人,轮流揭牌 for (int i = 0; i < 5; i++) { for (int j = 0; j < 3; j++) { card card = cards.remove(0); hand.get(j).add(card); } } system.out.println("第一个人的牌:"+ hand1); system.out.println("第二个人的牌:"+ hand2); system.out.println("第三个人的牌:"+ hand3); system.out.println("剩下的牌:"+cards); } public static void main1(string[] args) { // 1. 构造一副扑克牌 // 2. 揭牌 card card = new card(3,"♥"); system.out.println(card); } }
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