Re: [Caml-list] intersecting huge integer sets

[Markus Mottl <markus@oefai.at>]

On Tue, 27 Aug 2002, Yaron M. Minsky wrote:
> If the sets are really as dense as you say they are (on the order of 50%
> of all possible elements), then the fastest thing is probably just to
> use a bool array.  Such an approach would require 3 passes:   one to set
> all the elements of the array to false.  One to mark the elements
> corresponding to set 1 to true, and then one pass over set 2 to see
> which of its elements are shared by 1.

If this is what is needed, better take bit vectors ("bitv" - also on
Jean-Christophe's page).

Regards,
Markus Mottl

-- 
Markus Mottl                                             markus@oefai.at
Austrian Research Institute
for Artificial Intelligence                  http://www.oefai.at/~markus
-------------------
To unsubscribe, mail caml-list-request@inria.fr Archives: http://caml.inria.fr
Bug reports: http://caml.inria.fr/bin/caml-bugs FAQ: http://caml.inria.fr/FAQ/
Beginner's list: http://groups.yahoo.com/group/ocaml_beginners