Add strictures (use strict; use warnings;) to your code, clean up the issues that creates, then see if the problem remains.

As it stands there are a large number of variables initialised (maybe) but unused and a number of arrays are referenced, but their use is not clear. Your unique test looks fine. Your data reading looks like rubbish.

Generate a sample script using __DATA__ to provide the data and show us what you get and what you expect.

DWIM is Perl's answer to Gödel

In reply to Re: how to remove duplicate strings? by GrandFather
in thread how to remove duplicate strings? by heidi

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