> Thanks, I'll make time today or tomorrow to go through it and try to actually understand your algorithm.

I'd start with automated testing, I'm not 100% sure it holds for all cases with "holes".

update

in hindsight ... it's still producing false negatives:

That's what the algo does with [3, [1, 0, 0, undef, 0, 0, 1] 

. . 1 0 0 ? 0 0 1 
0 0 1 0 0 1 0 0 2 0 0 1 0 0 1 0
    ^           *

[download]

That's how it should fit 

. . . . . 1 0 0 ? 0 0 1 
0 0 1 0 0 1 0 0 2 0 0 1 0 0 1 0
          ^

[download]

Sorry!

Cheers Rolf
(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery

In reply to Re^7: checking a set of numbers for consistency mod p (update: still buggy) by LanX
in thread checking a set of numbers for consistency mod p by hv

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