[Kc] O'Reilly books (Puzzle: 100 Monkeys)
Garrett Goebel
garrett at scriptpro.com
Mon Jan 27 07:58:47 CST 2003
I've just received another very generously provided batch of books from
O'Reilly.
Slightly off-topic: I've had a somewhat busy weekend which included the
birth of my 2nd son and my daughter's 5th birthday party on the same day ;)
So while I don't have all the books assembled before me, I'll do my best to
recall the sum inventory of books received which have not yet been claimed
for book reviews, presentations, or monthly puzzle prizes:
o Computer Science & Perl
http://www.oreilly.com/catalog/tpj1/
o Creating Web Applications with Mozilla
www.oreilly.com/catalog/mozilla/
o Designing Embedded Hardware
www.oreilly.com/catalog/dbhardware/
o Perl CD Bookshelf, Version 3.0
www.oreilly.com/catalog/perlcdbs3/
o Perl Graphics Programming
www.oreilly.com/catalog/perlgp/
o Perl in a Nutshell, 2nd Edition
www.oreilly.com/catalog/perlnut2/
o Programming Web Services with Perl
www.oreilly.com/catalog/pwebserperl/
And speaking of prizes for monthly puzzles. I'll take this opportunity to
restate the current month's puzzle. There are some extremely good books
available for puzzle winners. The Perl CD Bookshelf alone contains 7 of
O'Reilly's most popular Perl titles and has a list price of $119.95.
100 Monkeys
2003-01-14
Note: This puzzle came to me unattributed by way of a
co-worker. If anyone chances by the source, please
let me know so I can give credit.
There are 100 doors, all closed. In a nearby cage are 100
monkeys. The first monkey is let out, and runs along the
doors opening every one. The second monkey is then let out,
and runs along the doors closing the 2nd, 4th, 6th,... all
the even-numbered doors. The third monkey is let out. He
attends only to the 3rd, 6th, 9th,... doors (every third
door, in other words), closing any that is open and opening
any that is closed. The fourth monkey does the same for the
4th, 8th, 12th, 16th,... doors, opening the closed ones and
closing the open ones. The fifth monkey does the same to
the 5th, 10th, 15th,... doors, and so on. After all 100
monkeys have done their work in this way, which doors are
left open?
Format: m/^\d+(?:\s\d+)*$/ # scalar must match this regex
Goal: fastest script to calculate the answer
Prize: Your choice of O'Reilly's
o Perl in a Nutshell, 2nd Edition
o Creating Applications with Mozilla
Deadline: Answers must be submitted at least 24 hours
before the next kc.pm meeting (February 11th)
--
Garrett Goebel
IS Development Specialist
ScriptPro Direct: 913.403.5261
5828 Reeds Road Main: 913.384.1008
Mission, KS 66202 Fax: 913.384.2180
www.scriptpro.com garrett at scriptpro dot com
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