in reply to Re^2: Take out repeating numbers with grep
in thread How do I get my code to not repeat numbers and also sort the numbers

Won't filtering out duplicates leave you with too few numbers? If that's what you want, here you go: 
my %seen;
my @unique = grep !$seen{$_}++, @numbers;

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This is in perlfaq4

In Section Seekers of Perl Wisdom