Re: [rules-users] Drools Puzzle #1: Ages of the sons

Hi all, Now you can deliver your solution to: droolspuzzle(a)gmail.com Good luck to all! Regards, Ellen On 7/29/07, Dr. Gernot Starke <gs(a)gernotstarke.de&gt; wrote: > good idea - I'll give it a try :-) > Gernot > > (the Prolog-guys did this regularly on their conferences - even > published a book out of it). > > Gernot > > > Am 28.07.2007 um 00:46 schrieb Ellen Zhao: > > >> Hallo all! >> >> I talked about running a periodic puzzle solving contest in the user >> mailing list to some people in the drools team. They have never done >> it before so did not know how this contest will come out. However, I >> was allowed to make the first try. If no body is interested, there >> won't be any Drools Puzzle #2. Sorry for the spam if you do not like >> this at all. In the end of this email you can see how I came up with >> this idea. >> >> So, here is the puzzle for round No. 1: >> >> ---------------------------------------------------------------------- >> -------------------------------------------------------------- >> Difficulty level: settler >> >> An old man asked a mathematician to guess the ages of his three sons. >> >> Old man said: "The product of their ages is 36." >> Mathematician said: "I need more information." >> >> Old man said:"Over there you can see a building. The sum of their ages >> equals the number of the windows in that building." >> After a short while the mathematician said: "I need more information." >> >> Old man said: "The oldest son has blue eyes." >> Mathematician said: "I got it." >> ---------------------------------------------------------------------- >> -------------------------------------------------------------- >> >> This is a simple puzzle, you may not need any computer to solve it. >> But here are the rules: >> >> 1. Solution (the core algorithm) must be written in drools. Any >> dialect is allowed. Any DSL is allowed. >> >> 2. Any kind of user interface is allowed. >> >> 3. Make your program as easy to test as possible. Please attach a >> simple and short readme file about how to build/test/deploy it. >> >> 4. The drools team will measure the performance of all submissions on >> a same computer. >> >> 3. The winner will be allowed to post the next puzzle. >> >> 4. Any participator, no matter finally win or not, will get points for >> each participation. Drools team will run a global ranking system and >> build a hall of fame for all participators. At the end of the year, >> the one who has most points will be awarded with ( Drools team please >> fill here, something like a T-shirt or ?). Top ten people in the hall >> of fame will be awarded with (Drools team please fill here). >> >> 5. If there are many, many participators, the Drools team might >> consider things like "shortest run-time award", "least memory-usage >> award", "best UI award", "shortest code award", etc. for each puzzle. >> >> 6. Currently the puzzle will come once half month. Submission deadline >> of this round is August 15th, 2007. >> >> 7. Please do not post your solution to the user mailing list, since >> everybody can see your program before the deadline. Drools team please >> specify an email account to which participators can post solutions. >> >> 8. Best/inspiring solutions will be disclosed when next round is on. >> >> 9. If any Drools bug is caught during your solving of the puzzle, the >> Drools team will award you with (Drools team please fill here). >> >> ---------------------------------------------------------------------- >> ------------------------------------------------------------- >> >> Any constructive advice and suggestion about the rules of Drools >> Puzzle is welcome. >> >> Here is guideline for posting puzzles: >> >> 1. You do not want to scare people away with too difficult puzzles or >> bore people with questions like 1+1=?, so please consider a proper >> difficulty level for the puzzle. >> >> 2. NP-complete or NP-hard is okay. For some NP-hard problems, >> sub-optimal solutions can be achieved efficiently. But do please tag >> the difficulty level as something like "veteran", "guru", etc. >> >> 3. Complexity aside, there is still scope and testability >> consideration. Puzzles like "How to integrate my 15 different kind of >> services objects and my entity home with Drools?" might be >> algorithmically not difficult, but the application-building can really >> take a lot of time and energy, and it is not straightforward to test >> the solution. >> >> 4. The purposes of this contest are: >> 4.1 To learn from each other, enhance our programming skill and >> learn good algorithms, good implementations. >> 4.2 To encourage people to explore features of Drools. >> 4.3 For fun. >> So your puzzle should not take too much work to solve. It should not >> mentally or physically torture participators. >> >> ---------------------------------------------------------------------- >> ----------------------------------------------------------- >> >> This idea was inspired by a "Weekly Challenge" running on dpreview.com >> user forum and GOTM from http://gotm.civfanatics.net/ >> >> On dpreview.com, a subject is posted by the winner of the prior week, >> people can post their photos to compete. On civfanatics.net, an >> initial configuration file is posted each month, and gamers submit >> their end results for ranking. Both of these two non-official contests >> are running very well, I hope Drools Puzzle will turn out a fun thing >> too. >> >> >> >> Regards and nice weekend, >> Ellen >> _______________________________________________ >> rules-users mailing list >> rules-users(a)lists.jboss.org >> https://lists.jboss.org/mailman/listinfo/rules-users >> >> > Dr. Gernot Starke > Doing IT Right > > --- > Willi-Lauf Allee 43, D-50858 K�ln > gs(a)gernotstarke.de, > +49 (0) 177 - 728 2570 > http://www.gernotstarke.de > Blog: http://it-and-more.blogspot.com > **************************************** > Das freie Portal f�r Software-Architekten: > http://www.arc42.de > > > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > >