Created
January 23, 2010 19:02
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class Card | |
include Comparable | |
attr_reader :rank | |
FACE_CARDS = { | |
'ace' => 1, | |
'jack' => 11, | |
'queen' => 12, | |
'king' => 13 | |
} | |
def initialize(rank) | |
@rank = cast_rank(rank) | |
end | |
def <=>(other_card) | |
self.rank <=> other_card.rank | |
end | |
private | |
def cast_rank(rank) | |
rank = FACE_CARDS[rank] || rank.to_i | |
if rank.nil? || !(1..13).include?(rank) | |
raise ArgumentError, "rank must be: 1-13, 'jack', 'queen', 'king', or 'ace'" | |
end | |
rank | |
end | |
end | |
class Deck | |
include Enumerable | |
attr_reader :cards | |
def initialize | |
@cards = [] | |
52.times { @cards << Card.new(rand(13) + 1) } | |
end | |
def each | |
@cards.each { |c| yield c } | |
end | |
def deal(num) | |
dealt_cards = [] | |
num.times { dealt_cards << @cards.pop } | |
dealt_cards | |
end | |
def peek | |
@cards.last | |
end | |
def shuffle! | |
100.times do | |
@cards << @cards.delete_at(rand(count)) | |
end | |
end | |
end |
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