I'd put the pairs into a hash of arrays with start as key and end as values and then I'll search with a backtracking algorithm hopping from start to start.

Best algorithm depends on many factors you didn't explained.

FWIW: I'm pretty sure this can be solved with one of the graph modules.

And last but not least: what did you try so far? (we are not to keen doing other peoples homework)

Cheers Rolf

(addicted to the Perl Programming Language)

In reply to Re: search overlap paths by LanX
in thread search overlap paths by Anonymous Monk

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