Computer Applications

Write a program to compute and display factorials of numbers between p and q where p > 0, q > 0, and p > q.

Java

Java Nested for Loops

2 Likes

Answer

import java.util.Scanner;

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

        Scanner in = new Scanner(System.in);
        System.out.print("Enter p: ");
        int p = in.nextInt();
        System.out.print("Enter q: ");
        int q = in.nextInt();

        if (p > q && p > 0 && q > 0) {
            for (int i = q; i <= p; i++) {
                long fact = 1;
                for (int j = 1; j <= i; j++)
                    fact *= j;
                System.out.println("Factorial of " + i + 
                                        " = " + fact);
            }
        }
        else {
            System.out.println("Invalid Input");
        }

    }
}

Output

Answered By

2 Likes

What will be the value of sum after each of the following nested loops is executed?

int sum = 0;
for (int i = 1; i <= 3; i++) 
    for (int j = 1; j <= 3; j++)
        sum = sum + (i + j);

View Answer

Write a menu driven program that prompts the user to select one of the four triangle patterns (a, b, c, or d). The program then accepts number of rows and prints the selected pattern as shown below:

Enter the size : 8

(a)

#
# #
# # #
# # # #
# # # # #
# # # # # #
# # # # # # #
# # # # # # # #

(b)

# # # # # # # #
# # # # # # # 
# # # # # # 
# # # # # 
# # # # 
# # # 
# # 
#

(c)

# # # # # # # #
  # # # # # # # 
    # # # # # # 
      # # # # # 
        # # # # 
          # # # 
            # # 
              #

(d)

              #
            # #
          # # #
        # # # #
      # # # # #
    # # # # # #
  # # # # # # # 
# # # # # # # #