Find Factorial of a Number in JavaScript using For loop - JavaScript Tutorial 66

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35.2 هزار بار بازدید - 7 سال پیش - Notes for You:: Find Factorial
Notes for You:: Find Factorial of a Number in JavaScript

Logic:
1! = 1
2! = 2 x 1 = 2
3! = 3 x 2 x 1= 6
4! = 4 x 3 x 2 x 1 = 24
5! = 5 x 4 x 3 x 2 x 1 = 120

i.e. n! = n   x  (n-1)  x  (n-2)  x  …..  x  1

Code:

var num=3;
var fact=1;

for(var i=num; i>=1; i--)
{
fact = fact * i;
}
document.write(fact); // 6

Note:
- replace > with greater-than symbol.

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7 سال پیش در تاریخ 1396/10/12 منتشر شده است.
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