Hi, i am trying to calculate the mode (most common) of an array of numbers. I also want to calculate the 2nd most common number etc until there are no number left. The code that i have written has no errors but also doesn't do anything!!! can anyone help? 

#! /usr/local/bin/perl -w

use strict;

my $num_of_params;

$num_of_params = @ARGV;

if ($num_of_params < 2)
{
die ("\n You haven't entered enough parameters \n");
}

open (BLASTX, $ARGV[0]) or die "unable to open file";

open (OUTFILE, ">$ARGV[1]");

my $line;
my @array;
my $number;                            

my $count=0;
my @frequency;
my %count;
my @ordered;

while (<FILE>)
{
        $line = $_;
        chomp ($line);

        @array = ();
        @array = split (/\s+/, $line);

        @frequency = $array[0]; 

 sub odd_median
  {
   @frequency = shift;
   @array = sort @frequency;
   return $array[(@array - (0,0,1,0) [@array & 3]) /2];
  }

 sub mode
  {
   @frequency = shift;
   my (%count, @result);

  foreach (@frequency)  
  {
   $count{$_}++;
  }

  foreach (sort { $count{$b} <=> $count{$a} } keys %count)
  {
   last if @result && $count{$_} != $count{$result[0]};
   push (@result, $_);
  }
    return odd_median \@result;
 }
}                                
close OUTFILE;

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I am not sure whether i need to print values as well as return them? (not really sure exactly what return does) also how do i return to an OUTFILE with return. If anyone has any better solutions to this problem they will be much appreciated.

In reply to calculating the mode by Anonymous Monk

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