Question

(c) Write a program for finding the factorial of n by using recursion( data structure and algorithm)​

Answer 1

Answer:

import java.util.Scanner;

class FactorialDemo{

  public static void main(String args[]){

     Scanner scanner = new Scanner(System.in);

     System.out.println("Enter the number:");

     //Stored the entered value in variable

     int num = scanner.nextInt();

     //Called the user defined function fact

     int factorial = fact(num);

     System.out.println("Factorial of entered number is: "+factorial);

  }

  static int fact(int n)

  {

      int output;

      if(n==1){

        return 1;

      }

      //Recursion: Function calling itself!!

      output = fact(n-1)* n;

      return output;

  }

}

Answer 2

data structures and algorithms is root ab