how to find a factorial of a number?

Answer 1

https://code.sololearn.com/c4yH93VKC0j9/?ref=app

Answer 2

https://code.sololearn.com/cjaInE3bgRqx/?ref=app

Answer 3

http://code.sololearn.com/cy1Ccs90vzS8/?ref=app

Answer 4

Hi,
Recursion, however, is costly in terms of efficiency. It's basically a function call, which in itself is expensive compared to looping.
It involves complex push and pop operations on the stack.
A loop on the other hand is much more efficient as it doesn't involve as much overhead.
so avoid recursive function.

if I am wrong pls correct me.