[Haskell-beginners] suggestions for optimizing sudoku solver

Ray Song emacsray at gmail.com
Tue Jan 3 03:07:00 CET 2012

An array with destructive updates (IO/ST) may help. You can also look into
the exact cover problem and dancing links. If I recall correctly, this
problem can be  transformed to a 729*324 matrix.
在 2012-1-3 上午8:10,"Peter Hall" <peter.hall at memorphic.com>写道:
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