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andreossandreoss
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[euler] prob054 using objects as hash keys
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‎categories/euler/prob054-andreoss.pl

Lines changed: 138 additions & 148 deletions
Original file line numberDiff line numberDiff line change
@@ -17,33 +17,31 @@
1717
1818
How many hands does Player 1 win?
1919
20-
Expected result: 376
21-
2220
=end pod
2321

2422
enum Rank <
25-
Two Three Four Five
26-
Six Seven Eight Nine
27-
Ten Jack Queen King Ace
23+
Two Three Four
24+
Six Seven Eight Nine
25+
Ten Jack Queen King Ace
2826
>;
29-
27+
3028
enum Suit <
31-
Hearts Diamonds Clubs Spades
29+
Hearts Diamonds Clubs Spades
3230
>;
3331

3432
enum Hand <
35-
RoyalFlush StraightFlush FourOfKind
36-
FullHouse Flush Straight ThreeOfKind
37-
TwoPairs OnePair HighCard
33+
RoyalFlush StraightFlush FourOfKind
34+
FullHouse Flush Straight ThreeOfKind
35+
TwoPairs OnePair HighCard
3836
>;
3937

4038
multi counts(Positional $h) {
41-
$h.Bag.Hash.invert
39+
bag($h).invert
4240
}
4341

4442
multi strigify(Hash $x) {
4543
join ' and ', do for $x.kv -> $k, $v {
46-
"$k of $v"
44+
"$k of $v"
4745
}
4846
}
4947

@@ -52,216 +50,208 @@
5250
has Suit $.suit;
5351

5452
method parse-rank(Str $r) returns Rank {
55-
given $r {
56-
when /\d/ { Rank($r.Int - 2) }
57-
when /T/ { Ten }
58-
when /J/ { Jack }
59-
when /Q/ { Queen }
60-
when /K/ { King }
61-
when /A/ { Ace }
62-
}
53+
given $r {
54+
when /\d/ { Rank($r.Int - 2) }
55+
when /T/ { Ten }
56+
when /J/ { Jack }
57+
when /Q/ { Queen }
58+
when /K/ { King }
59+
when /A/ { Ace }
60+
}
6361
}
6462
method parse-suit(Str $s) returns Suit {
65-
given $s {
66-
when /H/ { Hearts }
67-
when /D/ { Diamonds }
68-
when /C/ { Clubs }
69-
when /S/ { Spades }
70-
}
63+
given $s {
64+
when /H/ { Hearts }
65+
when /D/ { Diamonds }
66+
when /C/ { Clubs }
67+
when /S/ { Spades }
68+
}
7169
}
7270
multi method CALL-ME(Str $c where $c.chars == 2) {
73-
my ($r, $s) = $c.comb;
74-
self.new(rank => Card.parse-rank($r),
75-
suit => Card.parse-suit($s));
71+
my ($r, $s) = $c.comb;
72+
self.new(rank => Card.parse-rank($r),
73+
suit => Card.parse-suit($s));
7674
}
7775
multi method CALL-ME(Rank $v, Suit $s) {
78-
self.new(rank => $v, suit => $s)
76+
self.new(rank => $v, suit => $s)
7977
}
80-
81-
8278
}
8379

84-
85-
multi infix:«<=>»(Card $a, Card $b) returns Order {
80+
multi infix:«<=>»(Card $a, Card $b) is export returns Order {
8681
$a.rank <=> $b.rank
8782
}
8883

8984

9085
class Deal {
9186
subset Ranks where -> $r {
92-
$r ~~ Rank || $r ~~ Array[Rank]
87+
$r ~~ Rank || $r ~~ Array[Rank]
9388
};
9489

9590
has Card @.cards;
96-
has Ranks %.score;
91+
has Ranks %.score{Hand};
9792

9893
method CALL-ME(Str $h) {
99-
my $x = self.new(
100-
cards => map { Card($_) } , $h.split: /\s/
101-
);
102-
#warn $x!best-hand.perl;
103-
$x.score = $x!best-hand;
104-
$x;
94+
my $x = self.new(
95+
cards => map { Card($_) } , $h.split: /\s/
96+
);
97+
$x.score = $x!best-hand;
98+
$x;
99+
}
100+
method ACCEPTS(Hand $h) {
101+
so %.score{$h};
105102
}
106-
107103
method !best-hand {
108-
self!royal-flush //
109-
self!straight-flush //
110-
self!full-house //
111-
self!flush //
112-
self!straight //
113-
self!four-of-kind //
114-
self!three-of-kind //
115-
self!two-pairs //
116-
self!one-pair //
117-
self!high-card
104+
self!royal-flush
105+
// self!straight-flush
106+
// self!full-house
107+
// self!flush
108+
// self!straight
109+
// self!four-of-kind
110+
// self!three-of-kind
111+
// self!two-pairs
112+
// self!one-pair
113+
// self!high-card
118114
}
119115

120-
121116
method !straight {
122-
my @v = @.cards».rank.sort;
123-
if @v.join eq (@v.min ... @v.max).map({Rank($_)}).join {
124-
Straight => @v.max
125-
}
117+
my @v = @.cards».rank.sort;
118+
if @v eq (@v.min ... @v.max).map({Rank($_)}) {
119+
(Straight) => @v.max
120+
}
126121
}
127122

128123
method !flush {
129-
if [~~] @.cards».suit {
130-
Flush => Array[Rank].new(|@.cards».rank);
131-
}
124+
if [~~] @.cards».suit {
125+
(Flush) => Array[Rank].new: @.cards».rank;
126+
}
132127
}
133128

134129
method !royal-flush {
135-
if self!flush && self!straight && @.cards».rank.max ~~ Ace {
136-
RoyalFlush => Ace
137-
}
130+
if self!flush && self!straight && @.cards».rank.max ~~ Ace {
131+
(RoyalFlush) => Ace
132+
}
138133
}
139134

140135
method !straight-flush {
141-
if self!straight && self!flush {
142-
StraightFlush => self!straight.value
143-
}
136+
if self!flush && my $s = self!straight {
137+
(StraightFlush) => $s.value
138+
}
144139
};
145140
method !four-of-kind {
146-
# Four cards of the same value.
147-
my @ranks = @.cards».rank;
148-
my @four = @ranks.&counts.grep(*.key == 4);
149-
if so @four {
150-
FourOfKind => my $x = EVAL(@four[0].value),
151-
HighCard => max grep { $_ !~~ $x }, @ranks
152-
}
141+
# Four cards of the same value.
142+
my @ranks = @.cards».rank;
143+
my @four = @ranks.&counts.grep(*.key == 4);
144+
if so @four {
145+
(FourOfKind) => my $x = @four[0].value,
146+
(HighCard) => max grep { $_ !~~ $x }, @ranks
147+
}
153148
}
154149
method !full-house {
155150
# Three of a kind and a pair.
156-
my %x = self!three-of-kind , self!one-pair;
157-
if %x<ThreeOfKind>.defined && %x<OnePair>.defined {
158-
FullHouse => Ace
159-
}
151+
my Ranks %x{Hand} = self!three-of-kind , self!one-pair;
152+
if %x{ThreeOfKind}.defined && %x{OnePair}.defined {
153+
(FullHouse) => Ace
154+
}
160155
}
161-
156+
162157
method !three-of-kind {
163-
my $rank = @.cards».rank.&counts.grep(*.key == 3)[0];
164-
165-
if $rank {
166-
my %h = ThreeOfKind => my $x = EVAL($rank.value);
167-
168-
if my $one-pair = @.cards».rank.&counts.grep(*.key == 2)[0] {
169-
%h<OnePair> = EVAL($one-pair.value);
170-
} else {
171-
%h<HighCard> = max grep { $_ !~~ $x }, @.cards».rank;
172-
}
173-
%h;
174-
}
158+
my $rank = @.cards».rank.&counts.grep(*.key == 3)[0];
159+
160+
if $rank {
161+
my Ranks %h{Hand} = (ThreeOfKind) => my $x = $rank.value;
162+
163+
if my $one-pair = @.cards».rank.&counts.grep(*.key == 2)[0] {
164+
%h{OnePair} = $one-pair.value;
165+
}
166+
else {
167+
%h{HighCard} = max grep { $_ !~~ $x }, @.cards».rank;
168+
}
169+
%h;
170+
}
175171
}
176172

177173
method !two-pairs {
178-
my @pairs = @.cards»\
179-
.rank.&counts\
180-
.sort(*.key).grep(*.key == 2);
181-
if +@pairs == 2 {
182-
OnePair => my $x=@pairs.map({ EVAL $_.value }).min,
183-
TwoPairs => my $y=@pairs.map({ EVAL $_.value }).max,
184-
HighCard => max grep { $_ !~~ $x | $y },@.cards».rank;
185-
}
174+
my @pairs = @.cards»\
175+
.rank.&counts\
176+
.sort(*.key).grep(*.key == 2);
177+
if +@pairs == 2 {
178+
(OnePair) => my $x= @pairs».value.min,
179+
(TwoPairs) => my $y= @pairs».value.max,
180+
(HighCard) => max grep { $_ !~~ $x | $y },@.cards».rank;
181+
}
186182

187183
}
188184

189185
method !one-pair {
190-
my @pairs = @.cards»\
191-
.rank.&counts\
192-
.sort(*.key).grep(*.key == 2);
193-
if so @pairs {
194-
OnePair => my $x = EVAL(@pairs[0].value),
195-
HighCard => max grep { $_ !~~ $x}, @.cards».rank;
196-
}
186+
my $pair = @.cards»\
187+
.rank.&counts\
188+
.sort(*.key).grep(*.key == 2)[0];
189+
if $pair {
190+
(OnePair) => my $x = $pair.value,
191+
(HighCard) => max grep { $_ !~~ $x}, @.cards».rank;
192+
}
197193
}
198194

199195
method !high-card {
200-
HighCard => max @.cards».rank ;
196+
(HighCard) => @.cards».rank.max;
201197
}
202198
}
203199

204-
205-
multi infix:«~~~»(Deal $a, Hand $h) {
206-
so $a.score{$h};
207-
}
208-
209200
multi infix:«<=>»(Deal $a, Deal $b) returns Order {
210201
for Hand.enums.sort(*.value).keys.map({Hand($_)}) -> $h {
202+
return More if $a.score{$h}.defined && !$b.score{$h}.defined;
203+
return Less if $b.score{$h}.defined && !$a.score{$h}.defined;
204+
next unless $a.score{$h} & $b.score{$h};
211205

212-
return More if $a.score{$h}.defined && !$b.score{$h}.defined;
213-
return Less if $b.score{$h}.defined && !$a.score{$h}.defined;
214-
next unless $a.score{$h}.defined && $b.score{$h}.defined;
215-
216-
if $a.score{$h} & $b.score{$h} ~~ List {
217-
my $cmp = max $a.score{$h} Z<=> $b.score{$h};
218-
return Less if $cmp ~~ Same | Less;
219-
return More if $cmp ~~ More;
220-
}
206+
if $a.score{$h} & $b.score{$h} ~~ List {
207+
my $cmp = max $a.score{$h} Z<=> $b.score{$h};
208+
return Less if $cmp ~~ Less;
209+
return More if $cmp ~~ More;
210+
}
221211

222-
my $cmp = $a.score{$h} <=> $b.score{$h};
212+
my $cmp = $a.score{$h} <=> $b.score{$h};
223213

224-
next if $cmp ~~ Same;
225-
return $cmp;
214+
next if $cmp ~~ Same;
215+
return $cmp;
226216
}
217+
Same;
227218
}
228219

229220
sub MAIN(Bool :$verbose = False,
230-
Bool :$run-tests = False,
231-
:$file = $*SPEC.catdir($*PROGRAM_NAME.IO.dirname, 'poker.txt'),
232-
:$lines = Inf, # read only X lines from file
233-
) {
221+
Bool :$run-tests = False,
222+
:$file = $*SPEC.catdir($*PROGRAM_NAME.IO.dirname, 'poker.txt'),
223+
:$lines = Inf, # read only X lines from file
224+
) {
234225
die "'$file' is missing" unless $file.IO.e ;
235-
return tests if $run-tests;
236-
237-
say [+] gather for $file.IO.lines[^$lines] {
238-
my $line = $_; # for mutability
239-
$line ~~ s:nth(5)/\s/;/;
240-
my ($h1,$h2) = $line.split: /';'/;
241-
my $d1 = Deal($h1);
242-
my $d2 = Deal($h2);
243-
if $d1 <=> $d2 ~~ More {
244-
say "player1 wins on $line \n\twith {$d1.score.&strigify} against {$d2.score.&strigify} " if $verbose ;
245-
take 1;
246-
}
226+
return TEST if $run-tests;
227+
228+
say [+] gather for $file.IO.lines[^$lines] <-> $line {
229+
$line ~~ s:nth(5)/\s/;/;
230+
my ($h1,$h2) = $line.split: /';'/;
231+
my $d1 = Deal($h1);
232+
my $d2 = Deal($h2);
233+
if $d1 <=> $d2 ~~ More {
234+
say "player1 wins on $line \n\twith {$d1.score.&strigify} against {$d2.score.&strigify} " if $verbose ;
235+
take 1;
236+
}
247237
}
248-
238+
249239
}
250240

251-
sub tests {
241+
sub TEST {
252242
use Test;
253243
ok Card("TC") <=> Card("TD") ~~ Same, "cards are equal if ranks are equal ";
254244
ok Card("2C") <=> Card("AC") ~~ Less, "2C < AC";
255-
ok (Deal("5H 6C 7S 8D 9D") ~~~ Straight) &&
256-
(Deal("2H 6C 7S 8D 9D") !~~~ Straight) , "Detects straight";
257-
ok (Deal("5H 7H 8H AH TH") ~~~ Flush) &&
258-
(Deal("5H 7H 8H AC TH") !~~~ Flush), "Detects flush ";
259-
ok Deal("TH JH QH KH AH") ~~~ RoyalFlush, "Detects royal flush ";
245+
ok (Straight ~~ Deal("5H 6C 7S 8D 9D") ) &&
246+
(Straight !~~ Deal("2H 6C 7S 8D 9D")) , "Detects straight";
247+
ok (Flush ~~ Deal("5H 7H 8H AH TH")) &&
248+
(Flush !~~ Deal("5H 7H 8H AC TH")), "Detects flush ";
249+
ok RoyalFlush ~~ Deal("TH JH QH KH AH") , "Detects royal flush ";
260250
ok Deal("5H 5C 6S 7S KD") <=> Deal("2C 3S 8S 8D TD") ~~ Less,"Player 2 wins [1]";
261251
ok Deal("5D 8C 9S JS AC") <=> Deal("2C 5C 7D 8S QH") ~~ More, "Player 1 wins [2]";
262252
ok Deal("2D 9C AS AH AC") <=> Deal("3D 6D 7D TD QD") ~~ Less, "Player 2 wins [3]";
263253
ok Deal("4D 6S 9H QH QC") <=> Deal("3D 6D 7H QD QS") ~~ More, "Player 1 wins [4]";
264-
ok Deal("2H 2D 4C 4D 4S") <=> Deal("3C 3D 3S 9S 9D") ~~ More, "Player 1 wins [5]";
254+
ok Deal("2H 2D 4C 4D 4S") <=> Deal("3C 3D 3S 9S 9D") ~~ Same, "Nobody wins [5]";
265255
ok Deal("7C 5H KC QH JD") <=> Deal("AS KH 4C AD 4S") ~~ Less, "Player 2 wins [6]";
266256
ok Deal("KS KC 9S 6D 2C") <=> Deal("QH 9D 9H TS TC") ~~ Less, "Problem [1]";
267257
ok Deal("TS QH 6C 8H TH") <=> Deal("5H 3C 3H 9C 9D") ~~ Less, "Problem [2]";

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