JavaScript Code

Problem Statement

given a number, write a JavaScript program with a function that takes a number as argument, find the factorial of the number using recursion function, and returns the result

Solution

create a function findFactorial() that takes n as argument

if n is 0 or 1, the function returns 1, else the function returns n * findFactorial(n - 1). the function calls itself, findFactorial(), hence a recursive function

Program

1. factorial of a number using recursion function

function findFactorial(n) {
    if (n == 0 || n == 1) {
        return 1;
    }
    return n * findFactorial(n - 1);
}

var n = 5;
console.log(n+'! = '+ findFactorial(n));