A simple trick to cut time in half is to check only for places which are further down the file, as the distance from A to B is the same as the distance from B to A.

After you have found all A to B distances, just invert the list to get all B to A distances as well.

CountZero

"If you have four groups working on a compiler, you'll get a 4-pass compiler." - Conway's Law

In reply to Re: Zipcode Proximity script by CountZero
in thread Zipcode Proximity script by hacker

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