This solution uses some moderately-advanced techniques, but I recommend you study the solution and perldoc what you don't understand. You will learn some really useful techniques! 
#!/usr/bin/perl

use strict;
use warnings;

use Carp;
use Data::Dumper::Simple;

my @array = qw(    7742.8858
                7748.5855
                5581.2272
                1248.2257
                6589.5586
                5680.1886
                8762.1898
                5581.2272
                5535.5795
                6896.6571
                6573.2575
                6589.5586
                5680.1886
                5487.3275
                5489.5633
                6589.5586
                5680.1886
);

my %unique = map { $_ => '' } @array;
my @sorted_unique = sort { $a <=> $b } keys %unique;

print Dumper(%unique,@sorted_unique);

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---
It's all fine and dandy until someone has to look at the code.

In reply to Re: Extracting Unique Characters from a Array by kwaping
in thread Extracting Unique Characters from a Array by ps

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