Can i pop to Specific ViewController?

Question

I am using navigation based application. I push First ViewController to Second ViewController and from Second ViewController to Third ViewController. Now I want to pop from

Answer 1

Put function in UIViewController 1. it checks if Specific UIViewController exists In UINavigationController then popToViewController or else pushViewController

func navigate(_ navVC: AnyClass, pushVC: UIViewController) {
    for obj in self.navigationController!.viewControllers {
        if obj.isMember(of: navVC) {
            self.navigationController!.popToViewController(obj, animated: true)
            return
        }
    }
    self.navigationController!.pushViewController(pushVC, animated: true)
}

Use

self.navigate(ViewController.self, pushVC: self.storyboard?.instantiateViewController(withIdentifier: "ViewController") as! ViewController)