small challenge : factorial

Question

Make the shortest code to find the factorial of an integer .
use Any language , no rules .

here it is i think the shortest one
https://code.sololearn.com/cD9piu7S4Xz6/#cpp

Answer 1

Here, my smallest solution in Ruby..
https://code.sololearn.com/c22tD4rpWh6I/#rb

Answer 2

https://code.sololearn.com/czAFSwbs9SAE/?ref=app

Answer 3

https://code.sololearn.com/cwsKZnes5lqG/?ref=app

Answer 4

https://code.sololearn.com/Wxk7KL58inWk/?ref=app

Answer 5

https://code.sololearn.com/cP2Gpt6tNt7k/?ref=app

Answer 6

this is better I think in c++

https://code.sololearn.com/cVvI3t3BN8Zz/?ref=app

Answer 7

https://code.sololearn.com/c5YhvYfwl0UT/?ref=app

Answer 8

Haskell:
f n=foldl(*)1[1..n]

Answer 9

https://code.sololearn.com/cV2G11qBmjIx/?ref=app

Answer 10

The shortest :)
https://code.sololearn.com/cTHebeW576sK/?ref=app

Answer 11

https://code.sololearn.com/cLwzduOxDzwh/?ref=app

Answer 12

@petr Nope