https://github.com/charguer/ocaml
Tip revision: 7d9e1dd495d4ba55d670de92dad383b821c574a0 authored by Jacques Garrigue on 22 October 2009, 08:45:21 UTC
l'exemple de Xavier
l'exemple de Xavier
Tip revision: 7d9e1dd
quicksort.cmm
(***********************************************************************)
(* *)
(* Objective Caml *)
(* *)
(* Xavier Leroy, projet Cristal, INRIA Rocquencourt *)
(* *)
(* Copyright 1996 Institut National de Recherche en Informatique et *)
(* en Automatique. All rights reserved. This file is distributed *)
(* under the terms of the Q Public License version 1.0. *)
(* *)
(***********************************************************************)
(* $Id$ *)
(function "quicksort" (lo: int hi: int a: addr)
(if (< lo hi)
(let (i lo
j hi
pivot (addraref a hi))
(while (< i j)
(catch
(while 1
(if (>= i hi) exit [])
(if (> (addraref a i) pivot) exit [])
(assign i (+ i 1)))
with [])
(catch
(while 1
(if (<= j lo) exit [])
(if (< (addraref a j) pivot) exit [])
(assign j (- j 1)))
with [])
(if (< i j)
(let temp (addraref a i)
(addraset a i (addraref a j))
(addraset a j temp))
[]))
(let temp (addraref a i)
(addraset a i (addraref a hi))
(addraset a hi temp))
(app "quicksort" lo (- i 1) a unit)
(app "quicksort" (+ i 1) hi a unit))
[]))