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RE: A brief detour....;-)

From: Carel-Jan Engel <cjpengel.dbalert_at_xs4all.nl>
Date: Tue, 09 Dec 2003 14:09:24 -0800
Message-ID: <F001.005D952C.20031209140924@fatcity.com>


Back in the early 80's at school we had a towers of hanoi running in PL/1 On Nixdorf 8820, a teletype with matrix printer, printing out the full configuration after every move you made....

Regards, Carel-Jan

  At 07:24 9-12-03 -0800, you wrote:
>Hate to say this but you are a bit late. I had my students at University
>and here at Compuware create three to four different versions of the Tower's
>of Hanoi solution in PL/SQL. Used PL/SQL tables, stack processing,
>recursion (yes it can be done), and others. I also had (yep had - lost
>this) one for both PL/I and TSO/CLIST Dialog Manager & VMS DCL. I actually
>created screens where you could dynamically choose the number of pegs and
>pieces. It also verified that you were putting smaller pieces on top of
>larger ones (one of the core rules for Tof H).
>
>Isn't programming great?
>
>Thank You
>
>Stephen P. Karniotis
>Technical Alliance Manager
>Compuware Corporation
>Direct: (313) 227-4350
>Mobile: (248) 408-2918
>Email: Stephen.Karniotis_at_Compuware.com
>Web: www.compuware.com
>
> -----Original Message-----
>Bobak, Mark
>Sent: Monday, December 08, 2003 4:19 PM
>To: Multiple recipients of list ORACLE-L
>Subject: A brief detour....;-)
>
>So, I saw on SlashDot (http://www.slashdot.org/) a story about a guy who has
>over 100 different implementations of the Towers of Hanoi solution, each in
>a different language. Since he didn't have one in PL/SQL, I decided to
>write one.
>
>Here it is:
>create or replace package hanoi
>is
>from_peg constant number := 1;
>to_peg constant number := 3;
>using_peg constant number := 2;
>
>procedure play(n number);
>
>end hanoi;
>/
>create or replace package body hanoi
>is
>
>procedure do_hanoi(n number, from_peg number, to_peg number, using_peg
>number)
>is
>begin
> if(n > 0) then
> do_hanoi(n-1,from_peg, using_peg, to_peg);
> dbms_output.put_line('move '||from_peg||' --> '||to_peg);
> do_hanoi(n-1, using_peg, to_peg, from_peg);
> end if;
>end;
>procedure play(n number)
>is
>begin
> do_hanoi(n, from_peg, to_peg, using_peg);
>end;
>end;
>/
>
>This concludes this public service announcement. We now return you to our
>regularly scheduled programming.
>
>-Mark
>
>PS Yes, it's a slow day....;-)
>--
>Please see the official ORACLE-L FAQ: http://www.orafaq.net
>--
>Author: Bobak, Mark
> INET: Mark.Bobak_at_il.proquest.com
>
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>--
>Author: Karniotis, Stephen
> INET: Stephen_Karniotis_at_compuware.com
>
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-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: Carel-Jan Engel
  INET: cjpengel.dbalert_at_xs4all.nl

Fat City Network Services    -- 858-538-5051 http://www.fatcity.com
San Diego, California        -- Mailing list and web hosting services
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Received on Tue Dec 09 2003 - 16:09:24 CST

Original text of this message

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