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package Poker::Score::LowA5; |
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use Moo; |
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use Algorithm::Combinatorics qw(combinations); |
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=head1 NAME |
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Poker::Score::LowA5 - Identify and score lowball A-5 poker hand. |
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=head1 VERSION |
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Version 0.01 |
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=cut |
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our $VERSION = '0.01'; |
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=head1 INTRODUCTION |
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Straights and flushes do not affect the strengh of your hand and Aces always play low. |
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=head1 SYNOPSIS |
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See Poker::Score for code example. |
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=cut |
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extends 'Poker::Score'; |
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sub _build_rank_map { |
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my $self = shift; |
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$self->_rank_map({ |
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'A' => '01', |
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'2' => '02', |
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'3' => '03', |
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'4' => '04', |
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'5' => '05', |
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'6' => '06', |
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'7' => '07', |
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'8' => '08', |
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'9' => '09', |
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'T' => '10', |
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'J' => '11', |
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'Q' => '12', |
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'K' => '13', |
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}); |
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} |
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sub _build_hands { # generates all possible lowA5 hands |
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my $self = shift; |
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my %map = ( 1 => 'Five-of-a-Kind' ); |
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my @hands = @{ $self->fives }; |
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$map{ $#hands } = 'Four-of-a-Kind'; |
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push(@hands, @{ $self->fours }); |
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$map{ $#hands } = 'a Full House'; |
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push(@hands, @{ $self->houses }); |
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$map{ $#hands } = 'Three-of-a-Kind'; |
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push(@hands, @{ $self->threes }); |
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$map{ $#hands } = 'Two Pair'; |
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push(@hands, @{ $self->two_pair }); |
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$map{ $#hands } = 'One Pair'; |
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push(@hands, @{ $self->one_pair }); |
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$map{ $#hands } = 'a High Card'; |
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push(@hands, @{ $self->unpaired }); |
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$self->hands( [ @hands ] ); |
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$self->_hand_map( \%map ); |
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} |
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sub unpaired { |
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my $self = shift; |
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my @scores; |
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my $iter = combinations([1..13], 5); |
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while (my $c = $iter->next) { |
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push( @scores, join( "", map { sprintf("%02d", $_) } sort { $b <=> $a } @$c ) ); |
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} |
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#$self->hands([ sort { $b <=> $a } @scores ]); |
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return [ sort { $b <=> $a } @scores ]; |
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} |
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# one pair |
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sub one_pair { |
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my @temp; |
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for my $card ( 1 .. 13 ) { |
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for my $c ( |
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reverse combinations( [ reverse grep { $_ != $card } ( 1 .. 13 ) ], 3 ) ) |
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#reverse combinations( [ grep { $_ != $card } ( 1 .. 13 ) ], 3 ) ) |
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{ |
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push @temp, |
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join( '', |
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map { sprintf( "%02d", $_ ) } |
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sort { $b <=> $a } ( ($card) x 2, @$c ) ); |
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} |
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} |
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return [reverse @temp]; |
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} |
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# two pair |
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sub two_pair { |
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my @temp; |
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for my $c ( reverse combinations( [ reverse( 1 .. 13 ) ], 2 ) ) { |
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for my $card ( grep { $_ != $c->[0] && $_ != $c->[1] } ( 1 .. 13 ) ) { |
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push @temp, |
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join( '', |
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map { sprintf( "%02d", $_ ) } |
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sort { $b <=> $a } ( ( $c->[0] ) x 2, ( $c->[1] ) x 2, $card ) ); |
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} |
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} |
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return [reverse @temp]; |
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} |
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# three-of-a-kind |
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sub threes { |
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my @temp; |
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for my $card ( 1 .. 13 ) { |
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for my $c ( |
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reverse combinations( [ reverse grep { $_ != $card } ( 1 .. 13 ) ], 2 ) ) |
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{ |
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push @temp, join( |
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'', |
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map { sprintf( "%02d", $_ ) } |
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sort { $b <=> $a } ($card) x 3, @$c |
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); |
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} |
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} |
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return [reverse @temp]; |
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} |
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# full house |
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sub houses { |
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my @temp; |
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for my $card1 ( 1 .. 13 ) { |
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for my $card2 ( grep { $_ != $card1 } ( 1 .. 13 ) ) { |
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push @temp, |
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join( '', |
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map { sprintf( "%02d", $_ ) } |
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sort { $b <=> $a } ( ($card1) x 3, ($card2) x 2 ) ); |
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} |
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} |
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return [reverse @temp]; |
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} |
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# four-of-a-kind |
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sub fours { |
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my @temp; |
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for my $card1 ( 1 .. 13 ) { |
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for my $card2 ( grep { $_ != $card1 } ( 1 .. 13 ) ) { |
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push @temp, |
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join( '', |
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map { sprintf( "%02d", $_ ) } |
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sort { $b <=> $a } ( ($card1) x 4, $card2 ) ); |
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} |
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} |
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return [reverse @temp]; |
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} |
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# five-of-a-kind |
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sub fives { |
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my @temp; |
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for my $card ( 1 .. 13 ) { |
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push @temp, |
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join( '', |
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map { sprintf( "%02d", $_ ) } |
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($card) x 5); |
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} |
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return [reverse @temp]; |
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} |
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=head1 AUTHOR |
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Nathaniel Graham, C<< >> |
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=head1 LICENSE AND COPYRIGHT |
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Copyright 2016 Nathaniel Graham. |
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This program is free software; you can redistribute it and/or modify it |
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under the terms of the the Artistic License (2.0). You may obtain a |
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copy of the full license at: |
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L |
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=cut |
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1; |