Hi Monks,
I am supposed to write a script for creating the reverse complement DNA sequence, and I already know how to do it by using pattern matching and the reverse function.
$seq="ACGGGAGGACGGGAAAATTACTACGGCATTAGC";
print "Initial seq is:\n".$seq."\n";

my $complement=$seq;
$complement =~ tr/ACGTacgt/TGCAtgca/;
print "Complement is:\n".$complement."\n";

$reverse = reverse($complement);
print "Reverse complement is:\n".$reverse."\n";

[download]
Is there a way of doing this without regular expressions, using only substr function?

In reply to Create the reverse complement DNA sequence without pattern matching and reverse built-in function? by Anonymous Monk

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