Answers for "factorial definition"

factorial

unsigned long long factorial(unsigned long long num){

    if(num<=0)
        return 1;

    return num * factorial(num-1);
}

factorial

function BracketCombinations(num) { 
  return (1 / (num + 1)) * choose(2 * num, num);
}

function fact(num) {
  let sum = 1;
  for (let i = 1; i <= num; i++) {
    sum *= i;
  }
  return sum;
}

function choose(num, k) {
  return fact(num) / 2 * (fact(k) * 1 / fact(num - k));
}

factorial

#include<stdio.h>
#include<conio.h>
void main()
{
   int fact, i, n;
   fact = 1;
   printf("Enter the numbert");
   scanf("%d" , &n);
   for(i = 1; i <= n; i++)
   {
       fact = fact*i;
   }
   printf("Factorial of %d is %d", n , fact);
   getch();
}

factorial

//Java program to find factorial of a numberimport java.util.Scanner;public class factorial{		public static void main(String[] args)	{		//scanner class declaration		Scanner sc = new Scanner(System.in);		//input from user		System.out.print("Enter a number : ");						int number = sc.nextInt();		if(number >= 0)		{			//declare a variable to store factorial			int fac = 1;			for(int i = number ; i >= 1 ; i--)			fac = fac * i;			//display the result			System.out.println("Factorial of "+number+" is "+fac);			//closing scanner class(not compulsory, but good practice)		}		else			System.out.println("Value is not defined, please re-enter the value");		sc.close();														}}

factorial

public static void  factorial(int num){

    if(num<=0)
        return 1;

    return num * factorial(num-1);
}