Hi Choroba and Netwallah,

So you are basically saying I should sort it as strings rather than numbers? I first thought you were saying that I should convert the numbers to binary, but that is what perl would automatically do as stated earlier in Netwallah's reply. So it will be same as what I had done earlier.

$ more stringnum.pl 
use strict;
use warnings;
use v5.10.1;

my @arr= qw(10 10 20 0x47 1 30 45 45);

sub do_it_all {
    no warnings 'numeric';
    my $biggest = @_;
    foreach my $bignum (@_) {
        if ($bignum > $biggest) 
        {
            $biggest = $bignum;
        }
    }

    my $smallest = @_;
    foreach my $smallnum (@_) {
        if ($smallnum < $smallest) {
            $smallest = $smallnum;
        }
    }

    push my @unique, $smallest..$biggest;
    print "@unique\n";


}
&do_it_all(@arr);
[download]

This changes 0x47 to 0 though. Please see the output below.

$ perl stringnum.pl 
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
+ 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45
$
[download]

If you meant that the strings should be converted to the corresponding decimal and hex equivalents, I am working on that. This is fun!! I thought solving puzzles was fun. This is way better. :)