Question

Create a Factorial application that prompts the user for a number and then displays its factorial. The factorial of a number is the product of all the positive integers from 1 to the number. For example, 5! = 5*4*3*2*1. I also need an algorithm and pseudocode in java please

Answer 1

// Screenshot of the code & output

// Code to copy

Factorial.java

import java.util.Scanner;

public class Factorial {

   public static void main(String[] args) {
       int n;
       Scanner scnr= new Scanner(System.in);
       System.out.print("Enter a number: ");
       n=scnr.nextInt();
       System.out.println("Factorial: "+factorial(n));
scnr.close();
   }

   private static int factorial(int n)
   {
       if(n<0) {
           return 0;
       }else if (n == 0) {
           return 1;
       }else {
           return n*factorial(n-1);
       }   
  
   }

}