... you need to use less than not greater than ...

I would say tryingnottofailmytes needs to use less-than-or-equal
    $i <= $length-1
as the for-loop condition in the OPed code.

Give a man a fish:  <%-{-{-{-<

In reply to Re^2: Trying to use substring to find a reverse complement in DNA, by AnomalousMonk
in thread Trying to use substring to find a reverse complement in DNA, by tryingnottofailmytes

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