Untitled

//numberthree

import java.util.Scanner;

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

        System.out.print("Enter the value of a: "); // 2
        int a = scanner.nextInt();

        System.out.print("Enter the value of b: "); // 3 | 2*2*2
        int b = scanner.nextInt();

        int result = 1;
        for (int i = 1; i <= b; i++) {
            result *= a;
        }

        System.out.println(result);
    }
}


//number six

import java.util.Scanner;

public class NumberSix {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.print("Enter the value of n: ");
        int n = scanner.nextInt(); // 7

        double sum = 0;
        for (int i = 1; i <= n; i++) {
            sum += (double)i / (2 * i - 1); // 7/13
        }

        System.out.println(sum);
    }
}


//number seven

import java.util.Scanner;

public class NumberSeven {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.print("Enter the value of n: ");
        int n = scanner.nextInt();
        int sum = 0;
        for (int i = 1; i <= n; i++) {
            sum += i * i;
        }
        System.out.println(sum);
    }
}

// number eight 

import java.util.Scanner;

public class NumberEight {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.print("Enter the value of n: ");
        int n = scanner.nextInt();

        int sum = 0;
        for (int i = 1; i <= n; i++) {
            if (i % 2 == 0) {
                sum -= i; 
            } else {
                sum += i; 
            }
        }

        System.out.println("The value of y is: " + sum);
    }
}




// eval one

import java.util.Scanner;

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

        System.out.print("Enter the value of N: ");
        int N = scanner.nextInt();

        int sum = 0;
        for (int i = 1; i <= N; i++) {
            int innerSum = 0;
            for (int j = 1; j <= i; j++) {
                innerSum += j;
            }
            sum += innerSum;
        }

        sum = -sum;
        System.out.println("The value of y is: " + sum);
    }
}





//eval two

import java.util.Scanner;

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

        System.out.println("Enter even positive integer numbers. Enter an odd number to stop.");

        while (true) {
            System.out.print("Enter a positive number: ");
            int number = scanner.nextInt();

            if (number % 2 != 0) {
                System.out.println("You entered an odd number");
                break;
            }
            

            int count = 0;
            for (int i = 1; i <= number; i++) {
                if (number % i == 0) {
                    count++;
                }
            }

            System.out.println("Number of divisors of " + number + " is: " + count);
        }

    }
}