I'm pulling the most commonly used words out of a text file and putting them in another, but I don't want any a or an or the etc. in it. Here's what I got: 
#!/usr/bin/perl 


for($i=1; $i<20000; $i++) { 
open(IN,"/var/www/data/$i.txt") || die $!;
my $url = <IN>;
my %banned = (
  "a" => undef,
  "at" => undef,
  "be" => undef,
  "for" => undef,
  "and" => undef,
  "to" => undef,
  "of" => undef,
  "in" => undef,
  "the" => undef,
  "as" => undef,
  "i" => undef,
  "it" => undef,
  "are" => undef,
  "is" => undef,
  "am" => undef,
  "on" => undef,
  "an" => undef,
  "you" => undef,   
  "me" => undef,
  "b" => undef,
  "c" => undef,
  "d" => undef,
  "e" => undef,
  "f" => undef,
  "g" => undef,
  "h" => undef,
  "j" => undef,
  "k" => undef,
  "l" => undef,
  "m" => undef,
  "n" => undef,
  "o" => undef,
  "p" => undef,
  "q" => undef,
  "r" => undef,
  "s" => undef,
  "t" => undef,
  "u" => undef,
  "v" => undef,
  "w" => undef,
  "x" => undef,
  "y" => undef,
  "z" => undef,
  "0" => undef,
  "1" => undef,
  "2" => undef,
  "3" => undef,
  "4" => undef,
  "5" => undef,
  "6" => undef,
  "7" => undef,
  "8" => undef,
  "9" => undef,
  "10" => undef,
);
while(<IN>){
chomp;
@words = split(/\W/, $_);
}
close(IN);
foreach $word (@words) {
      $word=lc($word);
      OUTER: while( ( $key, $value) = each %banned ) {
              if($key eq $word) {
                $word = "";
                last OUTER;
            } else  {
              $count{$word}++ unless $word eq "";
        }
      }
     }
@keys = reverse sort { $count{$a} <=> $count{$b} } keys %count;
@keys = splice(@keys,0,50);
print "File: $i\n";
open(FILE,">/var/www/sorted/$i.txt") || die $!;
print FILE "$url\n";
print FILE join("\n", @keys);
close(FILE);
$string = "";
%count = ();
}

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But this doesn't remove the words. What's wrong?

Thanks

In reply to Removing common words by mkurtis

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
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