in reply to Read a variable backwards..

my $var = "11223344556677889900";
for (1..length $var) {
    print substr $var, -$_, 1; # or do anything else with it
}

[download]
or as a one liner perl -E '$v="11223344556677889900";say substr $v, -$_, 1 for (1..length $v)'

Cheers,
R.

Pereant, qui ante nos nostra dixerunt!

In Section Seekers of Perl Wisdom