I can't figure out how to write a function inside a class using Dictionary. Thanks

Question

class Car {
    
    let color: String
    let model: String
    var doors: [Int:String] = [:]
    let brand: String
    let state: String
    
    init (color: String, model: String, doors: [Int:String], brand: String, state: String) {
        self.color = color
        self.model = model
        self.doors = doors
        self.brand = brand
        self.state = state
    }
    
    
    func openDoor (numberDoor: Int) {
        
    }
    
    func closeDoor (numberDoor: Int) {
        
    }
    
    
    
}

let car = Car(color: "Black", model: "A8", doors: [1:"Door #1", 2: "Door #2"], brand: "Audi", state: "Stop")

I enter the door number and it displays a message on the console that "the door is open", if I enter it again with the same number - the message that "the door is ALREADY open". Door numbers are recorded in the Dictionary.

Example car.openDoor(number: 2) // "Door 2 is opened" car.openDoor(number: 2) // "Door 2 IS ALREADY OPENED

Answer 1

var alreadyOpen: [Int] = []

func openDoor (numberDoor: Int) {

    if alreadyOpen.contains(numberDoor) {
        print("door is already opend")
    } else {
        print("door is open")

      alreadyOpen.append(numberDoor)
    }
}

create a var with name "alreadyOpen"

var alreadyOpen: [Int] = []

below Condition menning if this number is available in [alreadyOpen] array so print("door is already opend") else print("door is open") and add a element in array.

if alreadyOpen.contains(numberDoor)