genera un numero random

 import UIKit

class ViewController: UIViewController {

    @IBOutlet weak var numbertxt: UITextField!

    @IBOutlet weak var intentoslbl: UILabel!

    @IBOutlet weak var msjolbl: UILabel!

    var random = ""

    @IBAction func validar(_ sender: Any) {

        setValues()

    }

    override func viewDidLoad() {

        super.viewDidLoad()

    }

    func setValues() {

        random = String(arc4random_uniform(10))

        print(random)

    }

}