HackerRank Day 1: Functions problem solution


Today, we’re discussing JavaScript functions. Check out the attached tutorial for more details.


Implement a function named factorial that has one parameter: an integer, n. It must return the value of n! (i.e., n factorial).

Input Format

Locked stub code in the editor reads a single integer, n, from stdin and passes it to a function named factorial.


  • 1 <= n <= 10

Output Format

The function must return the value of n!.

Sample Input 0


Sample Output 0


Explanation 0

We return the value of  4! = 4 x 3 x 2 x 1 = 24.

Solution – Day 1: Functions | 10 Days of JavaScript | HackerRank Solution

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