I understood only pairwise comparisons are necessary

So it's only quadratic: n(n-1)/2 = 19900

Cheers Rolf
(addicted to the Perl Programming Language and ☆☆☆☆ :)
Je suis Charlie!

In reply to Re^2: Searching for regular expression overlaps by LanX
in thread Searching for regular expression overlaps by Giardap

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