in reply to Perl sorting unique values

If ever you find yourself thinking "I need to get the unique values of $THING" you should consider using a hash, iterating through the values for $F[2] and incrementing $hash_of_f2{$F[2]} would give you a set of unique values available as keys %hash_of_f2 which you could then sort

print "Good ",qw(night morning afternoon evening)[(localtime)[2]/6]," fellow monks."

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Re^2: Perl sorting unique values
by pr09 (Novice) on Jun 22, 2011 at 09:21 UTC 
    my %hash;
open (FILE,"abc.txt");
while (<FILE>)
{
   chomp;
   my ($key,$val) = split '\|';
   print $hash{$val};
}

    [download]
    This is a bit of code which i have written,i did not applied sort on it till now.But,its not working.
[reply]
[d/l]

      Almost there:

      use strict;
use warnings;

my %hash;
open my $fh, '<', 'abc.txt' or die $!;
while (<$fh>) {
    chomp;
    my ($key, $val) = split '\|';
    $hash{$val}++;
}

print "$_\n" for sort keys %hash;

      [download]
[reply]
[d/l]

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