Comments on: Sudoku is Groovy https://www.barneyb.com/barneyblog/2010/01/25/sudoku-is-groovy/ Thoughts, rants, and even some code from the mind of Barney Boisvert. Thu, 11 Sep 2014 09:58:12 +0000 http://wordpress.org/?v=2.9.2 hourly 1 By: Sudoku GameRulesStrategy at BarneyBlog https://www.barneyb.com/barneyblog/2010/01/25/sudoku-is-groovy/comment-page-1/#comment-203434 Sudoku GameRulesStrategy at BarneyBlog Wed, 27 Jan 2010 21:46:42 +0000 http://www.barneyb.com/barneyblog/?p=1190#comment-203434 [...] couple days ago I posted about implementing a Sudoku solver in Groovy as a sort of cross-training exercise, and promised to delve into the strategies a bit more.  So [...] [...] couple days ago I posted about implementing a Sudoku solver in Groovy as a sort of cross-training exercise, and promised to delve into the strategies a bit more.  So [...]

]]> By: Rick O https://www.barneyb.com/barneyblog/2010/01/25/sudoku-is-groovy/comment-page-1/#comment-203243 Rick O Mon, 25 Jan 2010 22:04:44 +0000 http://www.barneyb.com/barneyblog/?p=1190#comment-203243 I use Sudoku in my <em>Advanced Database Structures</em> class to help drive home basic SQL concepts. The 3-hour lesson involves unions, inner and outer joins, subqueries, indexing, primary and foreign keys, views, and even a little CASE pivoting. By the end, after correctly setting up tables and views and inserting the starting board configuration, solving a Sudoku puzzle involves a single static INSERT SQL statement, run repeatedly until no more solutions are found. I also worked up a CFML solution using QoQ, but I don't use it in class. It's nowhere near as elegant, primarily because QoQ is so unwieldy and has so many bugs and restrictions. http://code.google.com/p/nowrists/source/browse/#svn/trunk/NoWriSts/org/rickosborne/sudoku I use Sudoku in my Advanced Database Structures class to help drive home basic SQL concepts. The 3-hour lesson involves unions, inner and outer joins, subqueries, indexing, primary and foreign keys, views, and even a little CASE pivoting.

By the end, after correctly setting up tables and views and inserting the starting board configuration, solving a Sudoku puzzle involves a single static INSERT SQL statement, run repeatedly until no more solutions are found.

I also worked up a CFML solution using QoQ, but I don't use it in class. It's nowhere near as elegant, primarily because QoQ is so unwieldy and has so many bugs and restrictions.

http://code.google.com/p/nowrists/source/browse/#svn/trunk/NoWriSts/org/rickosborne/sudoku

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