deck.rb

class Deck
  
  attr_accessor :cards
  
  def initialize(cards)
    @cards = cards
  	suit = ['C', 'D', 'H', 'S']
  	rank = [*2..10, 'J', 'Q', 'K', 'A']
    @cards = suit.product(rank).map(&:join)
  end
  
  def shuffle
    @cards.shuffle!
  end
  
  def deal
    @cards.shift
  end
end


deck1 = Deck.new(deck1)
deck1.shuffle
p deck1
deck1.deal