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SCOUG-Programming Mailing List Archives

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Date: Wed, 16 Apr 2003 21:18:28 PDT
From: "Steven Levine" <steve53@earthlink.net >
Reply-To: scoug-programming@scoug.com
To: scoug-programming@scoug.com
Subject: SCOUG-Programming: enumerate all permutations ?

In <3E9E2735.CC4@peterskye.com>, on 04/16/03
at 09:02 PM, Peter Skye said:

>> http://www-or.amp.i.kyoto-u.ac.jp/members/yagiura/papers/common95-e_abst.html
>> etc. for:
>> enumerate all permutations algorithm

>Thanks. Unfortunately it's in PostScript which I can't render here.

You could install GhostScript. Let me know if it's any good. I just
picked a likely suspect from the hits.

Try this one:

http://www.streamsec.com/howto.asp

This one appears to have everything you need, but the simple part. I
think the phi() function is Euler's phi() function, but I'm not sure.

>I did at first go to Google but was stymied by the massive number of
>references, and was hoping that someone could simply suggest a "best"
>algorithm. The best reference I have found so far is "Permutations by
>Interchanges" by B. R. Heath (1963) which Sedgewick claims is the fastest
>known, but finding Heath's paper was a chore. I have finally located it
>(in TIF format!) at The Oxford University Press in England.

No URL?

Steven

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"Steven Levine" MR2/ICE 2.37 #10183 Warp4/FP15/14.085_W4
www.scoug.com irc.webbnet.org #scoug (Wed 7pm PST)
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Copyright 2001 the Southern California OS/2 User Group. ALL RIGHTS RESERVED.

SCOUG, Warp Expo West, and Warpfest are trademarks of the Southern California OS/2 User Group. OS/2, Workplace Shell, and IBM are registered trademarks of International Business Machines Corporation. All other trademarks remain the property of their respective owners.