Answers for "a factorial"

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

// FACTORIAL 
// 5! = 5 * 4 *3 * 2 *1 = 120 

const number = 5;
let fact =1 ;

for(let i=number;i>=1;i--)
{
  console.log(i)
  fact = fact * i;
}
console.log("FACTORIAL is :: ",fact);