H,

This is my function to swap each two character of the input data. As example, the input data is 12345678 and the output will be 21436587. Is there are others solution do you have ?

sub swap {
        my ($a, $b);
        my @tmp;
        my $in = shift;

        for (my $i=0; $i < length($in)-1; $i+=2) {
                $a = substr($in,$i,1);
                $b = substr($in,$i+1,1);

                push(@tmp, $b . $a);
        }

        $out = sprintf ("@tmp");
        $out =~ s/\s//g;

        return $out;
}

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Edited (davorg): removed code tags from non-code sections

In reply to What is the best solution to swap input data? by bh_perl

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