From: Noel Welsh <noelwelsh@yahoo.com>
To: john.chu@east.sun.com, Caml-list@inria.fr
Subject: Re: [Caml-list] Holding a set of random integers of very wide range?
Date: Mon, 2 Sep 2002 06:25:39 -0700 (PDT) [thread overview]
Message-ID: <20020902132539.34551.qmail@web11204.mail.yahoo.com> (raw)
In-Reply-To: <15731.25402.232987.3449@gargle.gargle.HOWL>
--- john.chu@east.sun.com wrote:
> For reasons I tried to explain in a previous draft
> of this e-mail and
> has been cut due to the amount of space it took, I
> need to generate
> multiple permuted lists of integers ranging from 0
> to approximately
> 2^100 (or more, it's a bit open-ended
> unfortunately).
How about using a linear-congruential random number
generators. These simple algorithms will generate
numbers that don't repeat for a long period of time
(typically they use 32bit integers but I'm sure you'll
be able to find algorithms that generate numbers in a
larger range). You can generate permutations of by
setting the seeds to different values.
HTH,
Noel
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next prev parent reply other threads:[~2002-09-02 13:25 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <3D70203F.1000106@ozemail.com.au>
2002-09-02 9:40 ` [Caml-list] Explaining bit sets Diego Olivier Fernandez Pons
2002-09-02 13:10 ` [Caml-list] Holding a set of random integers of very wide range? john.chu
2002-09-02 13:25 ` Noel Welsh [this message]
2002-09-02 17:18 ` Tim Freeman
2002-09-02 21:30 ` Berke Durak
2002-09-02 23:46 ` [Caml-list] Explaining bit sets Yamagata Yoriyuki
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