Created
February 24, 2024 22:39
-
-
Save DmxLarchey/10dc90f60636392798a0c845dc0d0894 to your computer and use it in GitHub Desktop.
La fonction "est une factorielle" en OCaml
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
let is_fact n = | |
let rec loop i n = | |
let (q,r) = (n / i, n mod i) | |
in not (r <> 0) && (q = 1 || loop (1+i) q) | |
in 0 < n && loop 1 n;; |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
La variante suivante calcule l'inverse de la factorielle, c'est à dire renvoie la valeur
Some i
telle quefact i = n
, si elle existe, et renvoie la valeurNone
sinon:Comme on ne calcule plus sur des
bool
éens mais sur un typeint option
, le code est un peu moins compact mais c'est la même logique.