Oh, sorry. In the part of the code where you have: 
sub hd{ length( $_[ 0 ] ) - ( ( $_[ 0 ] ^ $_[ 1 ] ) =~ tr[\0][\0] ) }

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You are submitting 2 parameters (2 dna sequences) to the subroutine, so in the above code which computes the hamming distance, how do you know which variable refers to which sequence? Or could you just explain what the code above is doing? Thank you so much!

In reply to Re^11: Comparing 2 different-sized strings by AdrianJ217
in thread Comparing 2 different-sized strings by AdrianJ217

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