#!/usr/bin/env perl
#
# how much variance is there from filter_pattern for the given inputs?
# use this to determine roughly what the population of rhythms will be
#
#   $ perl variance 4 16 1000 200
#   unique 9
#   84      1000100010001000        42.0%
#   42      1000100010010000        21.0%
#   31      1001000010001000        15.5%
#   16      1000100010000100        8.0%
#   12      1000010010001000        6.0%
#   8       1000100100001000        4.0%
#   5       1000100001001000        2.5%
#   1       1001000100001000        0.5%
#   1       1000010001001000        0.5%
#   $ perl variance 4 16  100 200   >/dev/null
#   unique 53
#   $ perl variance 4 16   10 200   >/dev/null
#   unique 146
use 5.24.0;
use warnings;
use Music::RhythmSet::Util qw(filter_pattern);
die "Usage: $0 onsets beats trials repeat-count\n" unless @ARGV == 4;
my ( $onsets, $beats, $trials, $times ) = @ARGV;
my %tally;
$tally{ join '', filter_pattern( $onsets, $beats, $trials )->@* }++
  for 1 .. $times;
my $total = 0;
$total += $_ for values %tally;
my $unique = keys %tally;
warn "unique $unique\n";
for my $k ( sort { $tally{$b} <=> $tally{$a} } keys %tally ) {
    say join "\t", $tally{$k}, $k, sprintf "%.1f%%", $tally{$k} / $total * 100;
}