factorial formula
factorial formula
n! = n * ( n - 1 ) *...*1factorial
unsigned long long factorial(unsigned long long num){
if(num<=0)
return 1;
return num * factorial(num-1);
}factorial of 8
function getFactorial($int)
{
$factorial = 1;
for ($i = $int; $i > 1; $i--)
{
$factorial *= $i;
}
echo "The factorial of " . $int . " is " . $factorial . '<br>';
}Factorial Number
// METHOD ONE
const factorialNumber = num => {
let factorials = []
for(let i = 1; i <= num; i++) factorials.push(i)
return factorials.reduce((acc , curr) => acc * curr, 1)
}
// METHOD TWO
const factorialNumber = num => {
let factorial = 1, i = 1
while(i <= num){ factorial *= i; i++ }
return factorial
}
// METHOD THREE
function factorialNumber(num) {
if(num < 1) return 1
else return factorialNumber(num - 1) * num
}Copyright © 2021 Codeinu
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