java作业

星∗ 2022-03-27 原文

import java.util.Scanner;
public class user {
    Scanner sc = new Scanner(System.in);
    String username;
    String password;
    static int usercount = 0;
    public user(){
        usercount++;
    }
    public user(String username){
        this.username = username;
        usercount++;
    }
    public user(String username ,String password){
        this.username = username;
        this.password = password;
        usercount++;
    }
    public void setUsername() {
        System.out.println("请输入用户名：");
        username = sc.nextLine();
    }

    public void setPassword() {
        System.out.println("请输入密码：");
        password = sc.nextLine();
    }

    public void account() {
        System.out.println("你是第"+usercount+"个用户"+"你的用户名是:" + username + ",你的密码是：" + password);
    }

    public static void main(String[] args) {
      user u1 = new user();
      u1.setUsername();
      u1.setPassword();
      u1.account();
      user u2 = new user("w");
      u2.setPassword();
      u2.account();
      user u3 = new user("e","123");
      u3.account();
    }
}

public class Poker {
    private String[] decor = {"黑桃", "红桃", "方块", "梅花"};
    private int[] point = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13};
    private Card[] cards;

    public Poker() {
        cards = new Card[52];
        for (int i = 0; i < decor.length; i++) {
            for (int j = 0; j < point.length; j++) {
                cards[i * 13 + j] = new Card(decor[i], point[j]);
            }
        }
    }

    public void shuffle() {
        int len = cards.length;
        for (int i = 0; i < len; i++) {
            int index = (int) (Math.random() * len);
            Card temp = cards[index];
            cards[index] = cards[i];
            cards[i] = temp;
        }
    }

    public class Card {
        private String decor;
        private int point;

        public Card(String decor, int point) {
            this.decor = decor;
            this.point = point;
        }

        public String toString() {
            String pointStr;
            switch (point) {
                case 1:
                    pointStr = "A";
                    break;
                case 11:
                    pointStr = "J";
                    break;
                case 12:
                    pointStr = "Q";
                    break;
                case 13:
                    pointStr = "K";
                    break;
                default:
                    pointStr = String.valueOf(point);
            }
            return decor + pointStr;
        }
    }
    public Card getCard(int index) {
        return cards[index];
    }
}
class test {
    public static void main(String[] args) {
        Poker p = new Poker();
        p.shuffle();
        Poker.Card c = p.getCard(1);
        System.out.println(c);
    }
}