Re^2: Subroutine overhead in Perl

i'm not a sudoku player, but i thought that the objective was...

...each column, each row, and each of the nine 3×3 boxes (also called blocks or regions) contains the digits from 1 to 9, only one time each (that is, exclusively).

(from wikipedia sudoku article, emphasis added).

since the second row ("-,2,2,-,9,-,7,1,5") contains 2 twice, is your test input correct?

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Re^3: Subroutine overhead in Perl by strat (Canon) on Nov 07, 2007 at 07:26 UTC
A very special testcase is the following sudoku: `9-6-7-4-3 ---4--2-- -7--23-1- 5-----1-- -4-2-8-6- --3-----5 -3-7---5- --7--5--- 4-5-1-7-8` [download] which has two solutions: `926571483 351486279 874923516 582367194 149258367 763194825 238749651 617835942 495612738` [download] and `926571483 351486279 874923516 582367194 149258367 763149825 238794651 617835942 495612738` [download] Best regards, perl -e "s>>F>e=>y)\martinF)stronat)=>print,print v8.8.8.32.11.32"	[reply] [d/l] [select]
Re^4: Subroutine overhead in Perl by polettix (Vicar) on Nov 08, 2007 at 14:34 UTC
AFAIK, a "good" SuDoKu puzzle should have a unique solution. Flavio perl -ple'$_=reverse' <<<ti.xittelop@oivalf Io ho capito... ma tu che hai detto?	[reply]
Re^5: Subroutine overhead in Perl by strat (Canon) on Nov 10, 2007 at 13:05 UTC
That's true; but if you are beware of such strange user input, it's easier to write tests and make sure that such strange user input is also handled correctly... Best regards, perl -e "s>>F>e=>y)\martinF)stronat)=>print,print v8.8.8.32.11.32"	[reply]