In mathematics, the factorial of a positive integer n, denoted as n!, is the product of all positive integers less than or equal to n.

The factorial of n can be computed using the following rules.

Case I: If n is 1, then the factorial of n is 1.

Case II: If n is greater than 1, then the factorial of n is equal to n times the factorial of (n - 1).

The factorial method returns the factorial of n, as determined by case I and case II. Write the factorial method below. You are encouraged to implement this method recursively.

/* * Precondition: n is between 1 and 12, inclusive.

* Returns the factorial of n, as described in part (a).

*/

public static int factorial (int n)

Question

Computers and Technology

Drake Holloway

9 September, 15:04

In mathematics, the factorial of a positive integer n, denoted as n!, is the product of all positive integers less than or equal to n.

The factorial of n can be computed using the following rules.

Case I: If n is 1, then the factorial of n is 1.

Case II: If n is greater than 1, then the factorial of n is equal to n times the factorial of (n - 1).

The factorial method returns the factorial of n, as determined by case I and case II. Write the factorial method below. You are encouraged to implement this method recursively.

/* * Precondition: n is between 1 and 12, inclusive.

* Returns the factorial of n, as described in part (a).

*/

public static int factorial (int n)

+3

Answers (2)

Know the Answer?

Carlee Kaiser · Answer 1

public static int factorial (int n) {

if (n > = 1 && n <=12) {

if (n==1)

return 1;

else

return n * factorial (n-1);

}

else

return - 1;

}

Explanation:

Create a method called factorial that takes one parameter, n

Check if n is n is between 1 and 12. If it is between 1 and 12:

Check if it is 1. If it is 1, return 1. Otherwise, return n * function itself with parameter n-1.

If n is not between 1 and 12, return - 1, indicating that the number is not in the required range.

For example:

n = 3 Is n==1, NO factorial (3) = n*factorial (2)

n = 2 Is n==1, NO factorial (2) = n*factorial (1)

n = 1 Is n==1, YES factorial (1) = 1.

Then factorial (2) = 2*1 = 2, factorial (3) = 3*2 = 6

Justine Rocha · Answer 2

public static int factorial (int n) {

if (n<=1) {

return 1:

}else if (n>1 && n<=12) {

return n * factorial (n - 1);

}

}

int main () {

printf ("Enter a value : ");

scanf ("%d", &n);

printf ("Factorial of %d is %d/n", n, factorial (n));

return 0;

}