That's a brilliant way to do it. My own brute force method of comparing all the strings character by character required 5,000,050,000 comparisons and took almost 4 hours. Yours loops through 100,000 items once, then loops through a maximum of 2,000,000 keys once. It's not even close.

Aaron B.
My Woefully Neglected Blog, where I occasionally mention Perl.

In reply to Re^3: Comparing a large set of DNA sequences by aaron_baugher
in thread Comparing a large set of DNA sequences by shamshersingh

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