golf.swift

class Player {
  var name:String
  var activeRound:Round

  init(name: String) {
    self.name = name
    self.activeRound = Round()
  }
}

class Round {
  var scores:[Int:HoleScore]

  init() {
    self.scores = [Int:HoleScore]()
  }

  func recordStrokes(strokes:Int, forHole hole:Int) -> Void {
    self.scores[hole] = HoleScore(strokes)
  }

  func isComplete() -> Bool {
    return scores.values.count == 18
  }

  func totalScore() -> Int {
    var sum = 0
    for score in scores.values {
      sum += score.strokeCount
    }
    return sum
  }
}

class HoleScore {
  var strokeCount:Int

  init(_ strokes:Int) {
    self.strokeCount = strokes
  }

}

let me = Player(name: "Brooks")
me.activeRound.isComplete()
me.activeRound.totalScore()
me.activeRound.recordStrokes(4, forHole: 1)
me.activeRound.totalScore()

for holeNumber in 2...18 {
    me.activeRound.recordStrokes(5, forHole: holeNumber)
}

me.activeRound.totalScore()
me.activeRound.isComplete()