the string is originaly in $seq and is dublicated into the array @triplets. if you only want to print them, it's unnecessary to hold all triplets in memory but you can go through them one by one. besides that, storing triplets in an array should imho use more memory than the string stored in a scalar.

In reply to Re^3: splitting a sequence using unpack by Taulmarill
in thread splitting a sequence using unpack by Rashmun

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