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onion2k
 Post subject: The [Challenge] Index
PostPosted: Tue Aug 25, 2009 3:59 am 
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[Challenge] threads are essentially puzzles. Someone (you!) can post a question that would be interesting to see various solutions to. Just pop [Challenge] in the thread subject somewhere.

When someone posts a [Challenge] thread it'll be linked to here so they're easy to find again:


Syntax: [ Download ] [ Hide ]
.....................................................
: Challenge                          : Author       :
:....................................:..............:
: <a href="http://forums.devnetwork.net/viewtopic.php?t=105200" class="postlink">Database Connection</a>                : klevis miho  :
: <a href="http://forums.devnetwork.net/viewtopic.php?t=105220" class="postlink">Secret Decoder Ring</a>                : McInfo       :
: <a href="http://forums.devnetwork.net/viewtopic.php?t=105238" class="postlink">What color is the text?</a>            : onion2k      :
: <a href="http://forums.devnetwork.net/viewtopic.php?t=105337" class="postlink">Draw a chess field</a>                 : klevis miho  :
: <a href="http://forums.devnetwork.net/viewtopic.php?t=105420" class="postlink">Snakes and ladder style board</a>      : mikemike     :
: <a href="http://forums.devnetwork.net/viewtopic.php?t=105592" class="postlink">largest factorial</a>                  : jazz090      :
: <a href="http://forums.devnetwork.net/viewtopic.php?t=106110" class="postlink">Array Reversing button</a>             : lunaticrabic :
: <a href="http://forums.devnetwork.net/viewtopic.php?t=106119" class="postlink">Colour rotation</a>                    : SimonMayer   :
: <a href="http://forums.devnetwork.net/viewtopic.php?t=106143" class="postlink">Create a Form Description Language</a> : joeynovak    :
: <a href="http://forums.devnetwork.net/viewtopic.php?t=106495" class="postlink">Seeing Stars (and a Diamond)</a>       : McInfo       :
: <a href="http://forums.devnetwork.net/viewtopic.php?t=106778" class="postlink">Make a functional calendar</a>         : Griven       :
: <a href="http://forums.devnetwork.net/viewtopic.php?t=107654" class="postlink">Images the Hard Way</a>                : McInfo       :
: <a href="http://forums.devnetwork.net/viewtopic.php?t=108087" class="postlink">The Coder Cypher</a>                   : Weiry        :
: <a href="http://forums.devnetwork.net/viewtopic.php?f=1&t=110387&start=0&st=0&sk=t&sd=a" class="postlink">Zig-Zag Traversal</a>                  : VladSun      :
:....................................:..............:


(Thanks to McInfo for the fancy table thing)
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jackpf
PostPosted: Tue Aug 25, 2009 6:28 am 
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With kudos to ~klevis miho of course for originally coming up with the idea :P
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Benjamin
PostPosted: Thu Aug 27, 2009 12:03 am 
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Posts: 6887
The moderation team has been discussing ideas for challenges and we think that it's a very good idea. We invite everyone to get involved in solving and coming up with ideas for challenges.

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klevis miho
PostPosted: Thu Aug 27, 2009 5:11 am 
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Location: Albania
You should really open a category for that man :)
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mikemike
PostPosted: Fri Aug 28, 2009 6:11 pm 
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Location: Chester, UK
viewtopic.php?f=1&t=105420
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urvashi
PostPosted: Fri Sep 11, 2009 7:35 am 
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astions wrote:
The moderation team has been discussing ideas for challenges and we think that it's a very good idea. We invite everyone to get involved in solving and coming up with ideas for challenges.



nice
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VladSun
PostPosted: Fri Dec 18, 2009 8:19 am 
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:)
viewtopic.php?f=1&t=110387&start=0&st=0&sk=t&sd=a

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There are 10 types of people in this world, those who understand binary and those who don't
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John Cartwright
PostPosted: Fri Dec 18, 2009 5:02 pm 
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Location: Toronto
VladSun wrote:
:)
viewtopic.php?f=1&t=110387&start=0&st=0&sk=t&sd=a


Added.
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faymy001
PostPosted: Wed Feb 10, 2010 11:57 pm 
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Testing
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timWebUK
PostPosted: Fri Feb 12, 2010 6:27 am 
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viewtopic.php?f=1&t=112782

:)
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VladSun
PostPosted: Tue Mar 02, 2010 10:05 am 
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viewtopic.php?f=1&t=113599
:lol:

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There are 10 types of people in this world, those who understand binary and those who don't
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sukrityt8
PostPosted: Sun Mar 21, 2010 12:31 am 
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[quote="Benjamin"]The moderation team has been discussing ideas for challenges and we think that it's a very good idea. We invite everyone to get involved in solving and coming up with ideas for challenges.[/quote]

That is great to know. I love to face new "challenges" LOL, although I am not (regretfully) always very good at solving them. But I keep trying ... ;)


Last edited by sukrityt8 on Fri Aug 20, 2010 4:34 am, edited 1 time in total.

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VladSun
PostPosted: Wed Mar 31, 2010 7:44 am 
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:)
viewtopic.php?f=1&t=114832&start=0

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There are 10 types of people in this world, those who understand binary and those who don't
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phu
PostPosted: Thu Apr 01, 2010 3:26 am 
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Joined: Tue Mar 30, 2010 6:18 pm
Posts: 61
How about something practical?

Implement regex-based URL routing: Given a URL, passed by the web server to your front controller, find the most efficient way to match said arbitrary URL against an arbitrarily large list of URL regex's, with an emphasis on avoiding the overhead of repeated preg_match (or similar) calls.

Extra credit: Minimize the number of regex matches while still allowing duplicate named patterns in your URL regex's.

This is a problem I've worked with recently and would be interested in seeing more solutions to.
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onion2k
PostPosted: Fri Apr 02, 2010 4:42 am 
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phu wrote:
How about something practical?

I don't really think that's a good idea. The point of coding challenges is to find interesting and inventive solutions to arbitrary problems - it's very likely those solutions won't necessarily be the best ones from a readability, efficiency or practical point of view. If we use realistic scenarios people might take the code and use it on their websites, introducing all sorts of security and usability issues along the way.
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