Thursday is code puzzler day here at DZone. The idea is simple: solve the coding problem as efficiently as you can, in any language or framework that you find suitable.
Note: Even though there really is nothing stopping you from finding a solution to this on the internet, try to keep honest, and come up with your own answer. It's all about the participation!
Return the Factorial
Write a function which will return the factorial of a number n. Factorial is the product of the sequence n, n-1, n-2 .... 1. And remember that the factorial of 0 is actually 1.
Catch up on all our previous puzzlers here