#!/usr/bin/perl
use strict;

use Statistics::Descriptive;
use Getopt::Long;

my $bin;

GetOptions( 'binsize|b=i' => \$bin );
my $stat = Statistics::Descriptive::Full->new;

while (<>) {
    chomp;
    $stat->add_data($_);
}

if ( !$bin ) {
    my $max = $stat->max;
    my $min = $stat->min;
    $bin = int( $max - $min );
}

my %f = $stat->frequency_distribution($bin);

print "#stat:mean\t" . $stat->mean . "\n";
print "#stat:quartile1\t" . $stat->percentile(25) . "\n";
print "#stat:median\t" . $stat->median . "\n";
print "#stat:quartile3\t" . $stat->percentile(75) . "\n";
print "#stat:standard_deviation\t" . $stat->standard_deviation . "\n";

foreach my $p ( sort { $a <=> $b } keys %f ) {
    print $p, "\t", $f{$p} || 0, "\n";
}