let string: String = "A"let numberThree: UInt = -123let numberOne: Int = 123let character: Character = 'A'let numberTwo: Double = 123정답 : 2, 4
정답 : 3
var arrayOne: Array<Int> = [1, 2, 3]var dictionaryOne: Dictionary<String> = Dictionary<String>()var dictionary: [String:Int] = ["key":100]var arrayThree: [Int] = [Int]var arrayTwo: [Int] = Array<Int>()정답 : 2, 4