4.2

НАВРЕМЕ ЗА ИЗПИТ
import java.util.Scanner;
public class main {
    static void findStatus(int diff) {
        String status = "";
        if (diff < -30) {
            status = "Early";
        } else if (diff <=0) {
            status = "On time";
        } else if (diff > 0) {
            status = "Late";
        }
        System.out.println(status);
    }
    static void difference(int diff) {
        int hourDiff = Math.abs(diff / 60);
        int minDiff = Math.abs(diff % 60);
        if (diff != 0) {
            if(hourDiff > 0){
                System.out.printf("%d:%02d hours",hourDiff,minDiff);
            }else{
                System.out.printf("%2d minutes",minDiff);
            }
            if (diff>0){
                System.out.print(" after the start");
            }else{
                System.out.print(" before the start");
            }
        }
    }
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int hourOfExam = scan.nextInt();
        int minOfExam = scan.nextInt();
        int hourOfArrive = scan.nextInt();
        int minOfArrive = scan.nextInt();
        int examStart = (hourOfExam * 60) + minOfExam;
        int arrive = hourOfArrive * 60 + minOfArrive;
        int diff = arrive - examStart;
        findStatus(diff);
        difference(diff);
    }
}
ПЪТЕШЕСТВИЕ
import java.util.Scanner;
public class main {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        double budget = Double.parseDouble(scan.nextLine());
        String season = scan.nextLine();
        double spend = 0;
        if (budget <= 100) {
            System.out.println("Somewhere in Bulgaria");
            if (season.equalsIgnoreCase("summer")) {
                spend = 0.30 * budget;
                System.out.printf("Camp - %.2f", spend);
            }
            if (season.equalsIgnoreCase("winter")) {
                spend = 0.70 * budget;
                System.out.printf("Hotel - %.2f", spend);
            }
        }
        if (budget <= 1000 && budget > 100) {
            System.out.println("Somewhere in Balkans");
            if (season.equalsIgnoreCase("summer")) {
                spend = 0.40 * budget;
                System.out.printf("Camp - %.2f", spend);
            }
            if (season.equalsIgnoreCase("winter")) {
                spend = 0.80 * budget;
                System.out.printf("Hotel - %.2f", spend);
            }
        }
        if(budget > 1000){
            System.out.println("Somewhere in Europe");
            spend = 0.90*budget;
            System.out.printf("Hotel - %.2f",spend);
        }
    }
}
ОПЕРАЦИИ МЕЖДУ ЧИСЛА
import java.util.Scanner;

public class main {
    static boolean div(double n1, double n2 , char operator){
        if ((operator == '/' || operator == '%') && n2 == 0) {
            return true;
        }
        return false;
    }
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        double n1 = scan.nextDouble();
        double n2 = scan.nextDouble();
        char operator = scan.next().charAt(0);
        double result = 0;

        if (div(n1,n2,operator) == true){
            System.out.printf("Cannot divide %.0f by zero", n1);
        }

        if (div(n1,n2,operator) == false) {
            switch (operator) {
                case '+':
                    result += n1 + n2;
                    break;
                case '-':
                    result += n1 - n2;
                    break;
                case '*':
                    result += n1 * n2;
                    break;
                case '%':
                    result += n1 % n2;
                    break;
                default:
                    break;
            }
            if (operator == '/') {

                System.out.printf("%.0f / %.0f = %.2f", n1, n2, n1 / n2);
            }
            if (operator != '/') {
                System.out.printf("%.0f %s %.0f = %.0f", n1, operator, n2, result);
            }
            if (operator == '+' || operator == '-' || operator == '*') {
                if (result % 2 == 0) {
                    System.out.printf(" - even");
                } else {
                    System.out.printf(" - odd");
                }
            }
        }
    }
}
БИЛЕТИ ЗА МАЧ
import java.util.Scanner;

public class main {
    static double transport(int people, double budget) {
        double transport = 0;
        if (people >= 1 && people <= 4) {
            transport = 0.75 * budget;
        } else if (people >= 5 && people <= 9) {
            transport = 0.60 * budget;
        } else if (people >= 10 && people <= 24) {
            transport = 0.50 * budget;
        } else if (people >= 25 && people <= 49) {
            transport = 0.40 * budget;
        } else if (people >= 50) {
            transport = 0.25 * budget;
        }
        return transport;
    }

    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        double budget = Double.parseDouble(scan.nextLine());
        String ticketKind = scan.nextLine();
        int people = Integer.parseInt(scan.nextLine());
        double moneyLeft = 0;
        budget -= transport(people, budget);
        if (ticketKind.equalsIgnoreCase("Normal")) {
            budget -= 249.99*people;
        } else {
            budget -= 499.99*people;
        }

        if (budget > 0) {
            System.out.printf("Yes! You have %.2f leva left.", budget);
        }else{
            System.out.printf("Not enough money! You need %.2f leva.",Math.abs(budget));
        }
    }
}
ХОТЕЛСКА СТАЯ
import java.util.Scanner;

public class main {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        String season = scan.nextLine();
        int nights = Integer.parseInt(scan.nextLine());
        double apartment = 0;
        double studio = 0;
        double studioPrice = 0;
        double apartmentPrice = 0;
        double discountS = 0;
        double discountA = 0;
        if (season.equals("May") || season.equals("October")) {
            studioPrice = 50;
            apartmentPrice = 65;
        } else if (season.equals("June") || season.equals("September")) {
            studioPrice = 75.20;
            apartmentPrice = 68.70;
        } else if (season.equals("July") || season.equals("August")) {
            studioPrice = 76;
            apartmentPrice = 77;
        }

        switch(season){
            case "May":
            case "October":
                if (nights>7){
                    discountS = 0.05 * studioPrice;
                }if (nights>14){
                discountS = 0.30 * studioPrice;
            }break;
            case "June":
            case"September":
                if (nights > 14){
                    discountS = 0.20 * studioPrice;
                }break;
            default:break;
        }
        if(nights>14){
            discountA = 0.10 * apartmentPrice;
        }
        studioPrice-=discountS;
        apartmentPrice-=discountA;
        studio = studioPrice * nights;
        apartment = apartmentPrice *nights;

        System.out.printf("Apartment: %.2f lv.%n",apartment);
         System.out.printf("Studio: %.2f lv.",studio);
    }
}