Re: Sudoku - A solution in XSLT 2
> not sure if the table is better than just working out the group number > $groups[$x] > is > 1+ 3* (($x - 1) idiv 27) + ((($x -1) idiv 3 )mod 3) > > groups[$x] probably takes time proportional to $x (unless Saxon does > something clever there) but the expression is presumably more or less > constant time if you stay within machine integer range, but since the > board is only 81 entries rather than thousands of entries, the limiting > behaviour isn't really relevant and it's just a matter of trying it out > in the particular implementation I suppose. After moving to your table idea processing time did increase slightly (unscientific timing) I'll try the alternative you've suggested - if it works I'll attempt to understand it as well :)
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