Playing cards

# title: Playing cards
# source: https://rosettacode.org/wiki/Playing_cards
# category: Rosetta Code
# difficulty: Intro
# summary: Construct a standard 52-card deck from suit and rank combinations.
# tags: popular, arrays, modeling, basics
# vibe: 0.2

def ranks
  ["A", "2", "3", "4", "5", "6", "7", "8", "9", "10", "J", "Q", "K"]
end

def suits
  ["spades", "hearts", "diamonds", "clubs"]
end

def build_deck
  deck = []
  suit_index = 0

  while suit_index < suits.size
    rank_index = 0
    while rank_index < ranks.size
      deck = deck.push({
        rank: ranks[rank_index],
        suit: suits[suit_index]
      })
      rank_index = rank_index + 1
    end
    suit_index = suit_index + 1
  end

  deck
end

def run
  deck = build_deck
  {
    count: deck.size,
    first_three: [deck[0], deck[1], deck[2]],
    last_three: [deck[deck.size - 3], deck[deck.size - 2], deck[deck.size - 1]]
  }
end