Maybe you can then explain to us what "nearby" means? Maybe show a concrete example and explain why one set is "nearby" and another, very similar set is not "nearby"?

Just telling us "word puzzle" does not help. There are many types of word puzzles and your numbers don't explain at all how they relate to word puzzles.

In reply to Re^5: perl array matrix by Corion
in thread perl array matrix by perlhelp

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