Build your hash inside your while loop, and get rid of @New_Table:

my %Hash;
while (<INFILE>) {
    # the lines are composed of elements separated by a point comma <-
+- it's a called a semicolon!
    chomp;
    my ( $k, $v )= split /;/;
    $Hash{$k} += $v;
}
my @unique = keys %Hash;

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In reply to Re: suppress the elements that appear more than one time in a list by FunkyMonk
in thread suppress the elements that appear more than one time in a list by steph_bow

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