When dealing with dates, I always convert them to YYYYMMDD, the only sane form.
for my $date (@dates) {
my @parts = split qr!/!, $date;
if ($parts[2] < 50) { # arbitrary cutoff
$parts[2] += 2000
} else {
$parts[2] += 1900
};
$date = join "", @parts[2,0,1];
};
@sorted = sort @dates;
Conversion back to the other date format is left as an exercise to the reader
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