2ra .  package com.company;

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int number = Integer.parseInt(scanner.nextLine());
        if (number % 10 == 0) {
            System.out.println("The number is divisible by 10");
        } else if (number % 7 == 0) {
            System.out.println("The number is divisible by 7");
        } else if (number % 6 == 0) {
            System.out.println("The number is divisible by 6");
        } else if (number % 3 == 0) {
            System.out.println("The number is divisible by 3");

        } else if (number % 2 == 0) {
            System.out.println("The number is divisible by 2");

        }
        else{
            System.out.println("Not divisible");
        }
    }
}

3.ta import java.util.Scanner;

public class JF_3_Vacation {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        int peopleNum = Integer.parseInt(scanner.nextLine());
        String typePeople = scanner.nextLine();
        String day = scanner.nextLine();

        double price = 0;

        switch (typePeople) {
            case "Students":
                if ("Friday".equals(day)) {
                    price = 8.45;
                } else if ("Saturday".equals(day)) {
                    price = 9.80;
                } else if ("Sunday".equals(day)) {
                    price = 10.46;
                }
                break;
            case "Business":
                if ("Friday".equals(day)) {
                    price = 10.90;
                } else if ("Saturday".equals(day)) {
                    price = 15.60;
                } else if ("Sunday".equals(day)) {
                    price = 16;
                }
                break;
            case "Regular":
                if ("Friday".equals(day)) {
                    price = 15;
                } else if ("Saturday".equals(day)) {
                    price = 20.00;
                } else if ("Sunday".equals(day)) {
                    price = 22.50;
                }
                break;
        }
        double subTotal = peopleNum * price;
        if ("Students".equals(typePeople) && peopleNum >= 30) {
            subTotal *= 0.85;
        }
        else if ("Business".equals(typePeople) && peopleNum >= 100) {
 subTotal = (peopleNum - 10) * price;        }
        else if ("Regular".equals(typePeople) && peopleNum >= 10 && peopleNum <= 20) {
            subTotal *= 0.95;
        }
        System.out.printf("Total price: %.2f", subTotal);

    }
}

4ta . package com.company;

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int startNumber = Integer.parseInt(scanner.nextLine());
        int endNumber = Integer.parseInt(scanner.nextLine());
        int sum =0;
        for (int i = startNumber; i <= endNumber; i++) {
            System.out.print(i + " ");
            sum +=i;
        }
        System.out.printf("%nSum: %d",sum);

    }
}
5ta import java.util.Scanner;

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

        String username = scanner.nextLine();
        String password = "";
        int count = 0;


        for (int i = username.length() - 1; i >= 0; i--) {
            password += username.charAt(i);
        }
        String input = scanner.nextLine();
        while (!input.equals(password)) {
            count++;
            if (count == 4) {
                System.out.printf("User %s blocked!", username);
                return;
            }
            System.out.println("Incorrect password. Try again.");

            input = scanner.nextLine();
        }
        System.out.printf("User %s logged in.", username);
    }
}
6ta     package com.company;

    import java.util.Scanner;

    public class Main {

        public static void main(String[] args) {
            Scanner scanner = new Scanner(System.in);
            String input = scanner.nextLine();
            int totalSum = 0;

            for (int i = 0; i < input.length(); i++) {
                int digit =  Integer.parseInt("" +input.charAt(i));
                int currentSum = 1;
                for (int j = digit; j>=1 ; j--) {
                    currentSum *= j;
                }
                totalSum+=currentSum;
            }
            int number = Integer.parseInt(input);
            if(number == totalSum){
                System.out.println("yes");
            }else{
                System.out.println("no");
            }


        }
    }
7ma import java.util.Scanner;

public class VendingMachine {
    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);
        double sum = 0;
        int total = 0;

        String textInput = "";
        while (true) {
            textInput = scanner.nextLine();
            if (textInput.equals("Start")) {
                break;
            }
            double coin = Double.parseDouble(textInput);
            if (coin == 0.1 || coin == 0.2 || coin == 0.5 || coin == 1 || coin == 2) {
                sum += coin;
            } else {
                System.out.println("Cannot accept " + coin);
            }
        }


        double price = 0;
        String input ;
        boolean flag = false;
        while (true) {
            input = scanner.nextLine();
            switch (input.toLowerCase()) {
                case "nuts":
                    price = 2;
                    flag = true;
                    break;
                case "water":
                    price = 0.7;
                    flag = true;
                    break;
                case "crisps":
                    price = 1.5;
                    flag = true;
                    break;
                case "soda":
                    price = 0.8;
                    flag = true;
                    break;
                case "coke":
                    price = 1;
                    flag = true;
                    break;
            }
            if (input.equals("End")) {
                break;
            }
            if (sum < price) {
                System.out.println("Sorry, not enough money");
            } else if (flag) {
                System.out.println("Purchased " + input);
                sum -= price;
            } else {
                System.out.println("Invalid product");
            }

        }
        System.out.printf("Change: %.2f", sum);


    }
}

 8ma     package com.company;

    import java.util.Scanner;

    public class Main {

        public static void main(String[] args) {
            Scanner scanner = new Scanner(System.in);
            int n = Integer.parseInt(scanner.nextLine());

            for (int i = 1; i <=n ; i++) {
                for (int j = 0; j < i; j++) {
                    System.out.print(i + " ");

                    }
                System.out.println();
                }

            }

    }