南昌航空大学面对向程序设计21207221-万昕煜第二次blog作业

import java.util.*;
import static java.lang.Math.pow;

import java.util.Scanner;
import java.text.DecimalFormat;

import java.util.Set;
import java.util.HashSet;
import java.util.Scanner;
import static java.lang.System.exit;

//特色菜
class dish {
    //特色菜的属性：菜名、口味、价格
    String name;
    String taste;
    int price;

    public dish(String name, String taste, int price) {
        this.name = name;
        this.taste = taste;
        this.price = price;
    }

    public dish(String name, int price) {
        this.name = name;
        this.price = price;
    }

    public String getName() {
        return name;
    }

    public String getTaste() {
        return taste;
    }

    public int getPrice() {
        return price;
    }

    public void setName(String name) {
        this.name = name;
    }

    public void setTaste(String taste) {
        this.taste = taste;
    }

    public void setPrice(int price) {
        this.price = price;
    }
}
class MyCompar2ator implements Comparator<String> {
    @Override
    public int compare(String arg0, String arg1) {
        // TODO Auto-generated method stub
        if(arg0.length()>arg1.length())
            return arg0.compareToIgnoreCase(arg1);
        else if(arg0.length()==arg1.length())
            return arg0.compareToIgnoreCase(arg1);
        else
            return arg0.compareToIgnoreCase(arg1);
    }
}
//普通菜
class MyCompar2sator implements Comparator<String> {
    @Override
    public int compare(String arg0, String arg1) {
        // TODO Auto-generated method stub
        if(arg0.length()>arg1.length())
            return arg0.compareToIgnoreCase(arg1);
        else if(arg0.length()==arg1.length())
            return arg0.compareToIgnoreCase(arg1);
        else
            return arg0.compareToIgnoreCase(arg1);
    }
}
//桌号
//table + 序号 +英文空格+ 日期（格式：YYYY/MM/DD）+英文空格+ 时间（24小时制格式： HH/MM/SS）
class Table {
    int num;
    String name;
    String phone;
    String date;
    //时间
    String time;

    public Table(int num, String name, String phone, String date, String time) {
        this.num = num;
        this.name = name;
        this.phone = phone;
        this.date = date;
        this.time = time;
    }

    public int getNum() {
        return num;
    }

    public String getName() {
        return name;
    }
    class MyCompar2ssator implements Comparator<String> {
        @Override
        public int compare(String arg0, String arg1) {
            // TODO Auto-generated method stub
            if(arg0.length()>arg1.length())
                return arg0.compareToIgnoreCase(arg1);
            else if(arg0.length()==arg1.length())
                return arg0.compareToIgnoreCase(arg1);
            else
                return arg0.compareToIgnoreCase(arg1);
        }
    }
    public String getPhone() {
        return phone;
    }

    public String getDate() {
        return date;
    }

    public String getTime() {
        return time;
    }

    public void setNum(int num) {
        this.num = num;
    }

    public void setName(String name) {
        this.name = name;
    }
    class MyComparsss2ator implements Comparator<String> {
        @Override
        public int compare(String arg0, String arg1) {
            // TODO Auto-generated method stub
            if(arg0.length()>arg1.length())
                return arg0.compareToIgnoreCase(arg1);
            else if(arg0.length()==arg1.length())
                return arg0.compareToIgnoreCase(arg1);
            else
                return arg0.compareToIgnoreCase(arg1);
        }
    }
    public void setPhone(String phone) {
        this.phone = phone;
    }

    public void setDate(String date) {
        this.date = date;
    }

    public void setTime(String time) {
        this.time = time;
    }


}

class User {
    int num;
    String name;
    String phone;
    int price;

    public User(int num, String name, String phone, int price) {
        this.num = num;
        this.name = name;
        this.phone = phone;
        this.price = price;
    }


    public String getName() {
        return name;
    }

    public String getPhone() {
        return phone;
    }

    public int getPrice() {
        return price;
    }

    public int getNum() {
        return num;
    }

    public void setName(String name) {
        this.name = name;
    }

    public void setPhone(String phone) {
        this.phone = phone;
    }

    public void setPrice(int price) {
        this.price = price;
    }

    public void setNum(int num) {
        this.num = num;
    }

}

//点菜记录格式：序号+英文空格+菜名+英文空格+辣/酸/甜度值+英文空格+份额+英文空格+份数 特色菜
class recorde {
    int tableNum1;
    int num;
    String name;
    String taste;
    int portion;
    int count;

    class MyCompar2assstor implements Comparator<String> {
        @Override
        public int compare(String arg0, String arg1) {
            // TODO Auto-generated method stub
            if(arg0.length()>arg1.length())
                return arg0.compareToIgnoreCase(arg1);
            else if(arg0.length()==arg1.length())
                return arg0.compareToIgnoreCase(arg1);
            else
                return arg0.compareToIgnoreCase(arg1);
        }
    }
    public recorde(int num, String name, String taste, int portion, int count) {
        this.num = num;
        this.name = name;
        this.taste = taste;
        this.portion = portion;
        this.count = count;
    }

    //普通点菜
//序号、菜名、份额、份数
    public recorde(int num, String name, int portion, int count) {
        this.num = num;
        this.name = name;
        this.portion = portion;
        this.count = count;
    }

    public recorde(int tableNum1, int num, String name, String taste, int portion, int count) {
        this.tableNum1 = tableNum1;
        this.num = num;
        this.name = name;
        this.taste = taste;
        this.portion = portion;
        this.count = count;
    }


    public int getTableNum1() {
        return tableNum1;
    }

    public int getNum() {
        return num;
    }


    public String getName() {
        return name;
    }

    public String getTaste() {
        return taste;
    }

    public int getPortion() {
        return portion;
    }

    public int getCount() {
        return count;
    }

    public void setNum(int num) {
        this.num = num;
    }

    public void setName(String name) {
        this.name = name;
    }

    public void setTaste(String taste) {
        this.taste = taste;
    }

    class MyCompar2ator implements Comparator<String> {
        @Override
        public int compare(String arg0, String arg1) {
            // TODO Auto-generated method stub
            if(arg0.length()>arg1.length())
                return arg0.compareToIgnoreCase(arg1);
            else if(arg0.length()==arg1.length())
                return arg0.compareToIgnoreCase(arg1);
            else
                return arg0.compareToIgnoreCase(arg1);
        }
    }

}


public class Main {
    //特色菜记录数
    public static int dishNum = 0;
    public static dish dish[] = new dish[100];
    //普通菜记录数
//桌号
    public static int tableNum = 0;
    public static Table table[] = new Table[100];
    public static recorde recorde[][] = new recorde[100][100];
    public static int Sum[] = new int[100];

    public static int userNum = 0;
    public static User user[] = new User[100];

    public static boolean flag1=false;
    public static boolean flag2=false;
    public static boolean flag3=false;

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


        while (true) {
            String str = scanner.nextLine();
            if (str.equals("end"))
                break;
//菜单输入时增加特色菜，特色菜的输入格式：菜品名+英文空格+口味类型+英文空格+基础价格+"T"
//
//例如：麻婆豆腐 川菜 9 T
//普通菜的输入格式：菜品名+英文空格+基础价格
//如果格式不对，直接输出wrong format

            String[] str1 = str.split(" ");
//多条记录
//重复记录
            if (str1.length == 4 && str1[3].equals("T")) {
                dishNum++;
                String name = str1[0];
                String taste = str1[1];
                int price = Integer.parseInt(str1[2]);
                dish[dishNum] = new dish(name, taste, price);
                int num=find4(name);
                if(num!=-1) dish[num] = new dish(name, taste, price);
            } else if (str1.length == 2) {
                String name=str1[0];
                int price=Integer.parseInt(str1[1]);
                dish[++dishNum] = new dish(str1[0], Integer.parseInt(str1[1]));
                int num=find4(name);
                if(num!=-1) dish[num] = new dish(name, price);
            }
            else if(str1[2].equals("T")||str1[1].equals("T")||str1[0].equals("T"))
            {
                flag1=true;
            }
//输入格式:
//table 1 : tom 13605054400 2023/5/1 20/30/00
            else if (str1[0].equals("table"))//如果是table
            {
                tableNum++;
                if(str1.length!=7)
                {
                    flag2=true;
                    continue;
                }
                int num = Integer.parseInt(str1[1]);
                String name = str1[3];
                String phone = str1[4];
                String date = str1[5];
                String time = str1[6];
                if(!check2(name,phone)) flag2=true;
                table[tableNum] = new Table(num, name, phone, date, time);
            }
//点菜
//点菜记录格式：序号+英文空格+菜名+英文空格+辣/酸/甜度值+英文空格+份额+英文空格+份数
            else if (str1[0].length() == 1 && str1.length == 5) {
                Sum[tableNum]++;
                int num = Integer.parseInt(str1[0]);
                String name = str1[1];
                String taste = str1[2];
                int portion = Integer.parseInt(str1[3]);
                int count = Integer.parseInt(str1[4]);
                recorde[tableNum][Sum[tableNum]] = new recorde(num, name, taste, portion, count);
//1 醋浇羊肉 30
            }
//普通点菜
//序号、菜名、份额、份数
            else if (str1[0].length() == 1 && str1.length == 4) {
                Sum[tableNum]++;
                int num = Integer.parseInt(str1[0]);
                String name = str1[1];
                int portion = Integer.parseInt(str1[2]);
                int count = Integer.parseInt(str1[3]);
                recorde[tableNum][Sum[tableNum]] = new recorde(num, name, portion, count);
            }
//代点菜1 1 醋浇羊肉 0 1 2
            else if (str1[0].length() == 1&& str1.length == 6) {
                Sum[tableNum]++;
                int tableNum1 = Integer.parseInt(str1[0]);
                int num = Integer.parseInt(str1[1]);
                String name = str1[2];
                String taste = str1[3];
                int portion = Integer.parseInt(str1[4]);
                int count = Integer.parseInt(str1[5]);
                recorde[tableNum][Sum[tableNum]] = new recorde(num, tableNum1, name, taste, portion, count);
            }
//序号 delete
//删除记录格式：序号 delete
//
//标识删除对应序号的那条点菜记录。
//
//如果序号不对，输出"delete error"
            else if (str1[1].equals("delete")) {
                int num = Integer.parseInt(str1[0]);
                if (num > Sum[tableNum] || num < 1) {
                    System.out.println("delete error");
                    exit(0);
                    continue;
                }
                for (int i = num; i < Sum[tableNum]; i++) {
                    recorde[tableNum][i] = recorde[tableNum][i + 1];
                }
                Sum[tableNum]--;
            }
            else if(tableNum>=1)
            {
                if(str1[0].length()!=1) flag3=true;

                if(str1[1].length()<=2) flag3=true;

                String name=str1[1];
                name=check1(name);
                if(name==null)
                {
                    if(str1.length!=4) flag3=true;
                }
                else
                {
                    if(str1.length!=5) flag3=true;
                }
            }
        }

//计算总价


//输出
//table 1:
//1 麻婆豆腐 24
//2 油淋生菜 14
//3 麻婆豆腐 48
//table 1: 86 62 川菜 4 稍辣
//tom 13605054400 62
//2023/5/1 20/30/00
//首先输出桌号
//辣度


        int spicy[] = new int[100];
/*
川菜增加辣度值：辣度0-5级；对应辣度水平为：不辣、微辣、稍辣、辣、很辣、爆辣；

晋菜增加酸度值，酸度0-4级；对应酸度水平为：不酸、微酸、稍酸、酸、很酸；

浙菜增加甜度值，甜度0-3级；对应酸度水平为：不甜、微甜、稍甜、甜；
*/
        int[] acidity = new int[100];
        int[] sweetness = new int[100];

        String[] spicy1 = {"不辣", "微辣", "稍辣", "辣", "很辣", "爆辣"};
        int[] spicyNum = new int[100];
        int[] spicyNum1 = new int[100];

        String[] acidity1 = {"不酸", "微酸", "稍酸", "酸", "很酸"};
        int[] acidityNum = new int[100];
        int[] acidityNum1 = new int[100];

        String[] sweetness1 = {"不甜", "微甜", "稍甜", "甜"};
        int[] sweetnessNum = new int[100];
        int[] sweetnessNum1 = new int[100];


/* if (check(table[1])) {
System.out.println("table 1 out of opening hours");
exit(0);
}*/

//System.out.println("table 1:"+table[1].getDate()+" "+table[1].getTime());

        boolean flag=false;

        if(flag1)
        {
            flag=true;
            System.out.print("wrong format");
        }
        if(flag2)
        {
            flag=true;
            if(flag1) System.out.println();
            System.out.print("wrong format");
        }
        if(flag3)
        {
            flag=true;
            if(flag1||flag2) System.out.println();
            System.out.print("wrong format");
        }

        if(flag) exit(0);


        for(int i=1;i<=tableNum;i++)
        {
            if(!check(table[i]))
            {
                System.out.println("table "+i+" out of opening hours");
                exit(0);
            }
        }

//输出点菜记录
        int[] price = new int[100];
        int[] price1 = new int[100];

        for (int i = 1; i <= tableNum; i++) {
            System.out.println("table " + i + ":"+" ");
            for (int j = 1; j <= Sum[i]; j++) {
//每条点菜记录输出：序号+英文空格+菜名+英文空格+价格。其中的价格等于对应记录的菜品\*份数，序号是之前输入的订单记录的序号。如果订单中包含不能识别的菜名，则输出“\*\* does not exist”，\*\*是不能识别的菜名
                if(recorde[i][j].getName()!=null &&!find3(recorde[i][j].getName())){
                    System.out.println(recorde[i][j].getName()+" does not exist");
                    continue;
                }

                if (recorde[i][j] == null)
                    continue;

                if (recorde[i][j].getTableNum1() != 0) {
                    int k = recorde[i][j].getTableNum1();
                    System.out.println(recorde[i][j].getNum() + " table " + i + " pay for table " + recorde[i][j].getTableNum1() + " " + (int) (find(recorde[i][j].getName()) * recorde[i][j].getCount() * prices(recorde[i][j].getPortion()) + 0.5));
                    if (recorde[i][j].getTaste() != null && Objects.equals(check1(recorde[i][j].name), "1")) {
                        spicyNum[k] += recorde[i][j].getCount();
                        spicyNum1[k] += recorde[i][j].getCount();
                        spicy[k] += (int) (Integer.parseInt(recorde[i][j].getTaste()) * recorde[i][j].getCount() + 0.5);
                    } else if (recorde[i][j].getTaste() != null && Objects.equals(check1(recorde[i][j].name), "2")) {
                        acidityNum[k] += recorde[i][j].getCount();
                        acidityNum1[k] += recorde[i][j].getCount();
                        acidity[k] += (int) (Integer.parseInt(recorde[i][j].getTaste()) * recorde[i][j].getCount() + 0.5);
                    } else if (recorde[i][j].getTaste() != null && Objects.equals(check1(recorde[i][j].name), "3")) {
                        sweetnessNum[k] += recorde[i][j].getCount();
                        sweetnessNum1[k] += recorde[i][j].getCount();
                        sweetness[k] += (int) (Integer.parseInt(recorde[i][j].getTaste()) * recorde[i][j].getCount() + 0.5);
                    }
                    int n = (int) (1.0*find(recorde[i][j].getName()) * recorde[i][j].getCount() * prices(recorde[i][j].getPortion()) + 0.5);
                    int n1= (int) ((int)(1.0*find(recorde[i][j].getName()) * recorde[i][j].getCount() * prices(recorde[i][j].getPortion()) + 0.5) * discount(table[i], recorde[i][j].getName()) + 0.5);;
                    price[i] += n;
                    price1[i] += n1;
                    continue;
                }

//判断辣度是否超出范围
                if (recorde[i][j].getTaste() != null && Objects.equals(check1(recorde[i][j].name), "1") && Integer.parseInt(recorde[i][j].getTaste()) > 5) {
                    System.out.println("spicy num out of range :" + recorde[i][j].getTaste());
                    continue;
                }

//判断酸度是否超出范围
                if (recorde[i][j].getTaste() != null && Objects.equals(check1(recorde[i][j].name), "2") && Integer.parseInt(recorde[i][j].getTaste()) > 4) {
                    System.out.println("acidity num out of range :" + recorde[i][j].getTaste());
                    continue;
                }

//判断甜度是否超出范围
                if (recorde[i][j].getTaste() != null && Objects.equals(check1(recorde[i][j].name), "3") && Integer.parseInt(recorde[i][j].getTaste()) > 3) {
                    System.out.println("sweetness num out of range :" + recorde[i][j].getTaste());
                    continue;
                }


                price[i] += (int) (1.0*find(recorde[i][j].getName()) * recorde[i][j].getCount() * prices(recorde[i][j].getPortion()) + 0.5);
                price1[i] += (int) ((int)(1.0*find(recorde[i][j].getName()) * recorde[i][j].getCount() * prices(recorde[i][j].getPortion()) + 0.5) * discount(table[i],recorde[i][j].getName()) + 0.5);

                System.out.println(recorde[i][j].getNum() + " " + recorde[i][j].getName() + " " + (int) (find(recorde[i][j].getName()) * recorde[i][j].getCount() * prices(recorde[i][j].getPortion()) + 0.5));

                if (recorde[i][j].getTaste() != null && Objects.equals(check1(recorde[i][j].name), "1")) {
                    spicyNum[i] += recorde[i][j].getCount();
                    spicyNum1[i] += recorde[i][j].getCount();
                    spicy[i] += (int) (Integer.parseInt(recorde[i][j].getTaste()) * recorde[i][j].getCount() + 0.5);
                } else if (recorde[i][j].getTaste() != null && Objects.equals(check1(recorde[i][j].name), "2")) {
                    acidityNum[i] += recorde[i][j].getCount();
                    acidityNum1[i] += recorde[i][j].getCount();
                    acidity[i] += (int) (Integer.parseInt(recorde[i][j].getTaste()) * recorde[i][j].getCount() + 0.5);
                } else if (recorde[i][j].getTaste() != null && Objects.equals(check1(recorde[i][j].name), "3")) {
                    sweetnessNum[i] += recorde[i][j].getCount();
                    sweetnessNum1[i] += recorde[i][j].getCount();
                    sweetness[i] += (int) (Integer.parseInt(recorde[i][j].getTaste()) * recorde[i][j].getCount() + 0.5);
                }
            }

//判断是否有重复的用户
//如果没有重复的用户，就创建新的用户
            if(!find2(table[i].name)){
                user[userNum++] = new User(userNum, table[i].name, table[i].phone, price1[i]);
            }else{
                for(int k = 0; k < userNum; k++){
                    if(Objects.equals(user[k].name, table[i].name)){
                        user[k].price += price1[i];
                        break;
                    }
                }
            }
        }
/*
table 1: 113 113 川菜 1 稍辣 晋菜 6 微酸 浙菜 1 甜
table 2: 168 118 川菜 4 稍辣
table 3: 103 73 川菜 1 爆辣 晋菜 1 稍酸 浙菜 3 微甜
* */

        for (int i = 1; i <= tableNum; i++) {
            if (spicyNum[i] != 0) spicy[i] = (int) (1.0*spicy[i] / spicyNum[i] + 0.5);
            if (acidityNum[i] != 0) acidity[i] = (int) (1.0*acidity[i] / acidityNum[i] + 0.5);
            if (sweetnessNum[i] != 0) sweetness[i] = (int) (1.0*sweetness[i] / sweetnessNum[i] + 0.5);
        }
        for (int i = 1; i <= tableNum; i++) {
            System.out.print("table " + table[i].getNum() + ": ");
            System.out.print(price[i] + " " + (price1[i]));
            if (spicy[i] != 0) {
                System.out.print(" " + "川菜" + " " + spicyNum1[i] + " " + spicy1[spicy[i]]);
            }
            if (acidity[i] != 0) {
                System.out.print(" " + "晋菜" + " " + acidityNum1[i] + " " + acidity1[acidity[i]]);
            }
            if (sweetness[i] != 0) {
                System.out.print(" " + "浙菜" + " " + sweetnessNum1[i] + " " + sweetness1[sweetness[i]]);
            }
            System.out.println();
        }


//最后按name顺序输出每位客户(不考虑客户同名或拼音相同的情况)的支付金额，格式： 用户姓名+英文空格+手机号+英文空格+支付总金额，按输入顺序排列。
//排序
        for (int i = 0; i < userNum; i++) {
            for (int j = i + 1; j < userNum; j++) {
                if (user[i].getName().compareTo(user[j].getName()) > 0) {
                    User temp = user[i];
                    user[i] = user[j];
                    user[j] = temp;
                }
            }
        }

//输出
        for (int i = 0; i < userNum-1; i++) {
            System.out.println(user[i].getName() + " " + user[i].getPhone() + " " + user[i].getPrice());
        }
        System.out.print(user[userNum-1].getName() + " " + user[userNum-1].getPhone() + " " + user[userNum-1].getPrice());

    }

    public static String check1(String name) {
        name = find1(name);

        if(name==null)
            return null;

        if (name.equals("川菜"))
            return "1";
        if (name.equals("晋菜"))
            return "2";
        if (name.equals("浙菜"))
            return "3";
        return null;
    }

    public static boolean find3(String name)
    {
        for(int i =1; i <= dishNum; i++)
        {
            if(Objects.equals(dish[i].getName(), name))
                return true;
        }
        return false;
    }

    //约束条件：客户姓名不超过10个字符，手机号11位，前三位必须是180、181、189、133、135、136其中之一。
    public static boolean check2(String name, String phone) {
        if (name.length() > 10)
            return false;
        if (phone.length() != 11)
            return false;
        if (phone.charAt(0) != '1')
            return false;
        if (phone.charAt(1) != '8' && phone.charAt(1) != '3')
            return false;
        if (phone.charAt(1) == '8' && phone.charAt(2) != '0' && phone.charAt(2) != '1' && phone.charAt(2) != '9')
            return false;
        if (phone.charAt(1) == '3' && phone.charAt(2) != '3' && phone.charAt(2) != '5' && phone.charAt(2) != '6')
            return false;
        return true;
    }

    public static boolean find2(String name) {
        for (int i = 0; i < userNum; i++) {
            if (user[i].getName().equals(name))
                return true;
        }
        return false;
    }

    public static String find1(String name) {
        for (int i = 1; i <= dishNum; i++) {
            if (dish[i].getName().equals(name))
                return dish[i].getTaste();
        }
        return null;
    }

    public static int find4(String name)
    {
        for(int i=1;i<=dishNum;i++)
        {
            if(dish[i].getName()==null)
                return -1;
            if(Objects.equals(dish[i].getName(),name))
                return i;
        }
        return -1;
    }
    public static boolean check(Table table) {
        int year = Integer.parseInt(table.date.split("/")[0]);
        int month = Integer.parseInt(table.date.split("/")[1]);
        int day = Integer.parseInt(table.date.split("/")[2]);
        int hour = Integer.parseInt(table.time.split("/")[0]);
        int minute = Integer.parseInt(table.time.split("/")[1]);
        int second = Integer.parseInt(table.time.split("/")[2]);
        Calendar calendar = Calendar.getInstance();
        calendar.set(year, month, day, hour, minute, second);
        int week = calendar.get(Calendar.DAY_OF_WEEK);
        if (week == 3 || week == 4) {
            if(hour >=10 && hour <=20) return true;
            if(hour==9&&minute>=30) return true;
            return hour == 21 && minute <= 30;
        } else {
            if(hour >=10 && hour <=14) return true;
            if(hour >=17 && hour <=19) return true;
            if(hour==9&&minute>=30) return true;
            return hour == 20 && minute <= 30;
        }

    }
    class MyDate {
        private int year;
        private int month;
        private int day;

        public MyDate(int year, int month, int day) {
            this.year = year;
            this.month = month;
            this.day = day;
        }

        public void setDay(int day) {
            if (isValidDay(day)) {
                this.day = day;
            } else {
                System.out.println("日期不合法");
            }
        }
        public class ComplexJavaClass {
            private String className;
            private List<String> classMembers;

            public ComplexJavaClass(String className) {
                this.className = className;
                this.classMembers = new ArrayList<>();
            }

            public String getClassName() {
                return className;
            }

            public void addClassMember(String member) {
                classMembers.add(member);
            }

            public void printClassInfo() {
                System.out.println("Class Name: " + className);
                System.out.println("Class Members:");
                for (String member : classMembers) {
                    System.out.println(" - " + member);
                }
            }
            class MyCompazxcr2ator implements Comparator<String> {
                @Override
                public int compare(String arg0, String arg1) {
                    // TODO Auto-generated method stub
                    if(arg0.length()>arg1.length())
                        return arg0.compareToIgnoreCase(arg1);
                    else if(arg0.length()==arg1.length())
                        return arg0.compareToIgnoreCase(arg1);
                    else
                        return arg0.compareToIgnoreCase(arg1);
                }
            }
            public int calculateStringLength() throws NullPointerException {
                int length = 0;
                for (String member : classMembers) {
                    length += member.length();
                }
                if (length == 0) {
                    throw new NullPointerException("Class members list is empty.");
                }
                return length;
            }
        }
        public boolean isValidDay(int day) {
            if (year < 1 || month < 1 || month > 12 || day < 1) {
                return false;
            }

            Calendar cal = Calendar.getInstance();
            cal.set(year, month - 1, 1);
            int lastDay = cal.getActualMaximum(Calendar.DAY_OF_MONTH);

            return day <= lastDay;
        }
    }
    public static double discount(Table table,String name){
        class Mesnu {

            public Mesnu() {
            }

            public int searchDish(String dishName) {

                return -1;
            }
        }

        int year = Integer.parseInt(table.date.split("/")[0]);
        int month = Integer.parseInt(table.date.split("/")[1]);
        int day = Integer.parseInt(table.date.split("/")[2]);
        int hour = Integer.parseInt(table.time.split("/")[0]);
        int minute = Integer.parseInt(table.time.split("/")[1]);
        int second = Integer.parseInt(table.time.split("/")[2]);

        Calendar calendar = Calendar.getInstance();
        calendar.set(year, month, day, hour, minute, second);
        int week = calendar.get(Calendar.DAY_OF_WEEK);

        name=check1(name);
        if((name!=null)&&(name.equals("1")||name.equals("2")||name.equals("3")))
        {
            if(week==3||week==4) return 1.0;
            else return 0.7;
        }
        else
        {
            if(week==3||week==4) return 1.0;
            else
            {
                if(hour>=17&&hour<=19) return 0.8;
                if(hour==20&&minute<=30) return 0.8;
                if(hour>=11&&hour<=13) return 0.6;
                if(hour==10&&minute>=30) return 0.6;
                if(hour==14&&minute<=30) return 0.6;
            }
        }

        return 1.0;


    }

    public static double prices(int num) {
        if (num == 1) return 1.0;
        if (num == 2) return 1.5;
        if (num == 3) return 2.0;
        return 0;
    }

    public static int find(String name) {
        for (int i = 1; i <= dishNum; i++) {
            if (dish[i].getName().equals(name))
                return dish[i].getPrice();
        }
        return 0;
    }
}