Hi,

Is this what you want?

#!/usr/bin/perl -w
use strict;
use Data::Dumper;

my @array = ("white","blue","yellow");
my %hash = ();
foreach my $temp (@array) {
     $hash{$temp} = $temp;
}

print Dumper \%hash;
print join (" ",keys %hash);
[download]

That gives:

$VAR1 = {
          'white' => 'white',
          'blue' => 'blue',
          'yellow' => 'yellow'
        };
white blue yellow
[download]

If you want to learn more about hash or list, check this out,it gives solid rudimentary concept.
When I first learn Perl, I also found this information about constructing data structure in Perl very useful.