Dear Perl Monks, I have a serious problem and I would really appreciate and help that you can give me I have created two arrays (@site1 @site2) each of which contains string variables (called $site1, and $site2). an example of a $site is: $site = 'AATKKM' I need a script that will compare $site1 of @site1 with every $site variable in @site2. It should give me for example the following pairs (if $site2 = 'GGGGG') AG AG TG KG KG MG these will be my pairwise combinations for every combination that i find I need to have a counter that will increment by 1 e.g AG -> count_AG++; I don't expect anyone to give me a full working script but any ideas on the overall structure that it should have would be more than helpfull. Thanks in advance for your help

In reply to Comparing two arrays and counting pairwise comparisons by replicant4

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