/**
 * Created by Ashish Patel
 * Copyright © 2017 ashish.me
 * ashishsushilpatel@gmail.com 
 */

/**
 * Problem:
 * Return the factorial of the provided integer.
 * If the integer is represented with the letter n, a factorial is the product of all positive integers less than or equal to n.
 * Factorials are often represented with the shorthand notation n!
 * For example: 5! = 1 * 2 * 3 * 4 * 5 = 120
 */

 function factorial(number){
    if (number === 1){
        return 1;
    } 
    return factorial(number - 1) * number;
 }

 console.log(factorial(4));