题解 | #自动售货系统#

好麻烦啊这个

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);

        int[] a = new int[6];
        int[] m = new int[4];
        int goods = 0;
        int change = 0;
        int balance = 0;

        String[] res = new String[] {
            "E002:Denomination error",
            "S001:Initialization is successful",
            "S002:Pay success,balance=",
            "S003:Buy success,balance=",
            "E003:Change is not enough, pay fail",
            "E005:All the goods sold out",
            "E006:Goods does not exist",
            "E007:The goods sold out",
            "E008:Lack of balance",
            "E009:Work failure",
            "E010:Parameter error"
        };

        while (in.hasNextLine()) {
            String line = in.nextLine();
            String[] cmds = line.split(";");
            for (String cmd : cmds) {
                if (cmd.equals("") || cmd.equals("\n")) {
                    continue;
                }

                String[] parts = cmd.split(" ");
                switch (parts[0]) {
                    case "r":
                        String[] r1 = parts[1].split("-");
                        for (int i = 0; i < 6; i++) {
                            a[i] = Integer.parseInt(r1[i]);
                            goods += a[i];
                        }
                        String[] r2 = parts[2].split("-");
                        m[0] = Integer.parseInt(r2[0]);
                        m[1] = Integer.parseInt(r2[1]);
                        m[2] = Integer.parseInt(r2[2]);
                        m[3] = Integer.parseInt(r2[3]);
                        change += m[0] + m[1] * 2;
                        System.out.println(res[1]);
                        break;
                    case "p":
                        int p1 = Integer.parseInt(parts[1]);
                        if (p1 != 1 && p1 != 2 && p1 != 5 && p1 != 10) {
                            System.out.println(res[0]);
                        } else if (p1 >= 5 && change < p1) {
                            System.out.println(res[4]);
                        } else if (goods == 0) {
                            System.out.println(res[5]);
                        } else {
                            switch (p1) {
                                case 1:
                                    m[0]++;
                                    change++;
                                    balance++;
                                    break;
                                case 2:
                                    m[1]++;
                                    change += 2;
                                    balance += 2;
                                    break;
                                case 5:
                                    m[2]++;
                                    balance += 5;
                                    break;
                                case 10:
                                    m[3]++;
                                    balance += 10;
                            }
                            System.out.println(res[2] + balance);
                        }
                        break;
                    case "b":
                        int b1 = 0;
                        int b2 = 0;
                        switch (parts[1]) {
                            case "A1":
                                b1 = 0;
                                b2 = 2;
                                break;
                            case "A2":
                                b1 = 1;
                                b2 = 3;
                                break;
                            case "A3":
                                b1 = 2;
                                b2 = 4;
                                break;
                            case "A4":
                                b1 = 3;
                                b2 = 5;
                                break;
                            case "A5":
                                b1 = 4;
                                b2 = 8;
                                break;
                            case "A6":
                                b1 = 5;
                                b2 = 6;
                        }
                        if (b2 == 0) {
                            System.out.println(res[6]);
                        } else if (a[b1] == 0) {
                            System.out.println(res[7]);
                            continue;
                        } else if (balance < b2) {
                            System.out.println(res[8]);
                        } else {
                            a[b1]--;
                            balance -= b2;
                            System.out.println(res[3] + balance);
                        }
                        break;
                    case "c":
                        if (balance == 0) {
                            System.out.println(res[9]);
                        } else {
                            int c10 = Math.min(m[3], balance / 10);
                            balance -= c10 * 10;
                            int c5 = Math.min(m[2], balance / 5);
                            balance -= c5 * 5;
                            int c2 = Math.min(m[1], balance / 2);
                            balance -= c2 * 2;
                            change -= c2 * 2;
                            int c1 = Math.min(m[0], balance);
                            balance -= c1;
                            change -= c1;
                            System.out.println("1 yuan coin number=" + c1);
                            System.out.println("2 yuan coin number=" + c2);
                            System.out.println("5 yuan coin number=" + c5);
                            System.out.println("10 yuan coin number=" + c10);
                        }
                        break;
                    case "q":
                        if (parts[1].equals("0")) {
                            System.out.println("A1 2 " + a[0]);
                            System.out.println("A2 3 " + a[1]);
                            System.out.println("A3 4 " + a[2]);
                            System.out.println("A4 5 " + a[3]);
                            System.out.println("A5 8 " + a[4]);
                            System.out.println("A6 6 " + a[5]);
                        } else if (parts[1].equals("1")) {
                            System.out.println("1 yuan coin number=" + m[0]);
                            System.out.println("2 yuan coin number=" + m[1]);
                            System.out.println("5 yuan coin number=" + m[2]);
                            System.out.println("10 yuan coin number=" + m[3]);
                        } else {
                            System.out.println(res[10]);
                        }
                        break;
                    default:
                        System.out.println(res[10]);
                }
            }
        }
    }
}