1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
|
#!/usr/bin/env perl
use strict;
use warnings;
use experimental qw{ say state postderef signatures };
use List::Util qw{ sum0 uniq };
my @deck;
# 1 = ace
# 11 = jack
# 12 = queen
# 13 = king
my @ranks = reverse qw{1 2 3 4 5 6 7 8 9 10 11 12 13};
my @suites = qw{ C S H D };
for my $suite (@suites) {
for my $rank (@ranks) {
push @deck, join '', $suite, $rank;
}
}
my $count = 0;
my %hands;
for my $i1 ( 0 .. 51 ) {
for my $i2 ( $i1 + 1 .. 51 ) {
for my $i3 ( $i2 + 1 .. 51 ) {
for my $i4 ( $i3 + 1 .. 51 ) {
for my $i5 ( $i4 + 1 .. 51 ) {
my @indexes = ( $i1, $i2, $i3, $i4, $i5 );
my @hand = sort map { $deck[$_] } @indexes;
my $hand = join ', ', @hand;
my $verdict = judge_hand(@hand);
$hands{$verdict}++;
$count++;
}
}
}
}
}
for my $k ( sort { no warnings;int $a <=> int $b } keys %hands ) {
say join "\n\t", $k, display_large_number($hands{$k});
}
say display_large_number( sum0 values %hands );
say display_large_number($count);
exit;
sub judge_hand (@hand) {
my @suites = get_suites(@hand);
my @ranks = get_ranks(@hand);
my $flush = is_flush(@hand);
my $straight = is_straight(@hand);
return '2 straight flush' if $straight && $flush;
return '3 four of a kind' if is_four_of_a_kind(@hand);
return '4 full house' if is_full_house(@hand);
return '5 flush' if $flush;
return '6 straight' if $straight;
return '7 three of a kind' if is_three_of_a_kind(@hand);
return '8 two pair' if is_two_pair(@hand);
return '9 one pair' if is_one_pair(@hand);
return '10 high card';
}
sub done (@hand) {
state $hash;
my $hand = join ' ', @hand;
if ( $hash->{$hand} ) {
return 1;
}
$hash->{$hand}++;
return 0;
}
sub display_large_number ($num) {
my $x = '';
my $mun = reverse $num;
while ( length $mun > 3 ) {
my $t = substr $mun, 0, 3;
substr( $mun, 0, 3 ) = '';
$x .= $t . ',';
}
$x .= $mun;
$x = reverse $x;
return $x;
}
sub is_flush (@hand) {
my @suites = get_suites(@hand);
return 1 if scalar @suites == 1;
return 0;
}
sub is_straight (@hand) {
my @ranks = get_ranks(@hand);
return 1 if $ranks[4] == $ranks[0] + 4;
return 1 if $ranks[0] == 1 && $ranks[1] == 10 && $ranks[4] == 13;
return 0;
}
sub is_full_house (@hand) {
my @ranks = get_ranks(@hand);
my %ranks;
for my $r (@ranks) {
$ranks{$r}++;
}
my @v = sort { $b <=> $a } values %ranks;
return 1 if $v[0] == 3 && $v[1] == 2;
return 0;
}
sub is_two_pair (@hand) {
my @ranks = get_ranks(@hand);
my %ranks;
for my $r (@ranks) {
$ranks{$r}++;
}
my @v = sort { $b <=> $a } values %ranks;
return 1 if $v[0] == 2 && $v[1] == 2;
return 0;
}
sub is_one_pair (@hand) {
my @ranks = get_ranks(@hand);
my %ranks;
for my $r (@ranks) {
$ranks{$r}++;
}
my @v = sort { $b <=> $a } values %ranks;
return 1 if $v[0] == 2 && $v[1] == 1;
return 0;
}
sub is_three_of_a_kind (@hand) {
my @ranks = get_ranks(@hand);
my %ranks;
for my $r (@ranks) {
$ranks{$r}++;
}
my @v = sort { $b <=> $a } values %ranks;
return 1 if $v[0] == 3 && $v[1] == 1;
return 0;
}
sub is_four_of_a_kind (@hand) {
my @ranks = get_ranks(@hand);
my %ranks;
for my $r (@ranks) {
$ranks{$r}++;
}
my @v = sort { $b <=> $a } values %ranks;
return 1 if $v[0] == 4 && $v[1] == 1;
return 0;
}
sub get_ranks(@hand) {
my @ranks = sort { $a <=> $b } map {
my $x = $_;
$x =~ s/\D//mx;
$x
} @hand;
return @ranks;
}
sub get_suites(@hand) {
my @suites = uniq sort
map { my $x = $_; $x =~ s/\d+//mx; $x } @hand;
return @suites;
}
|
