Computer scienceProgramming languagesJavaCode organizationMethods

Declaring methods

Theory

Calculating factorials

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Write a method that calculates the factorial of a given number.

The factorial of n is calculated by the product of integer number from 1 to n (inclusive). The factorial of 0 is equal to 1.

Sample Input 1: 

0

Sample Output 1: 

1

Sample Input 2: 

5

Sample Output 2: 

120
Write a program in Java 17
import java.util.Scanner;

public class Main {

public static long factorial(long n) {
// write your code here
}

/* Do not change code below */
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
long n = Integer.parseInt(scanner.nextLine().trim());
System.out.println(factorial(n));
}
}
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