That's interesting. I hardly ever think of using the string xor operator. Surely your solution can be golfed, though... 

$ perl -alpE '$_=($F[0]^$F[1])=~tr{\0}{}' 
ATCGTCGAGCG ACGTCCTGTCG
4
^D

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In reply to Re^2: Array looping by vrk
in thread Array looping by Nansh

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