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The Round A Round will be the object that processes responses and records guesses. A Round is initialized with a Deck. The idea is that when we start a Round, the current card is the first in the deck (the first in the Deck’s array of Cards). When we make a guess, the guess is recorded, and the next card in the deck becomes the current card.

The take_turn method is the crux of this problem. The take_turn method takes a string representing the guess. It should create a new Turn object with the appropriate guess and Card. It should store this new Turn, as well as return it from the take_turn method. Also, when the take_turn method is called, the Round should move on to the next card in the deck.

A Round should respond to the following interaction pattern:

pry(main)> round.number_correct #=> 1

pry(main)> round.number_correct_by_category(:Geography) #=> 1

pry(main)> round.number_correct_by_category(:STEM) #=> 0

pry(main)> round.percent_correct #=> 50.0

pry(main)> round.percent_correct_by_category(:Geography) #=> 100.0

pry(main)> round.current_card #=> #<Card:0x00007fa161a136f0 @answer="North north west", @question="Describe in words the exact direction that is 697.5° clockwise from due north?", @category=:STEM> -->