在iOS中切换View Controller的最佳方法

let viewControllerArray = [firstViewController, secondViewController]
viewControllerArray.forEach { viewController in
    viewController.willMove(toParent: nil)
}
viewControllerArray.forEach { viewController in
    viewController.view.frame = view.bounds
}
view.setViewControllers(viewControllerArray, direction: .forward, animated: true, completion: nil)

let navigationController = UINavigationController(rootViewController: secondViewController)
view.present(navigationController, animated: true, completion: nil)

let thirdViewController = UIViewController()
thirdViewController.view.backgroundColor = .red
view.present(thirdViewController, animated: true, completion: nil)