如何连续创建多个lables和UIbutton？如下图所示

import UIKit

class ViewController: UIViewController {
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        let labelCount = 5
        let buttonCount = 3
        
        let labelWidth: CGFloat = 100
        let labelHeight: CGFloat = 30
        let buttonWidth: CGFloat = 80
        let buttonHeight: CGFloat = 40
        
        let margin: CGFloat = 20
        let spacing: CGFloat = 10
        
        for i in 0..<labelCount {
            let label = UILabel(frame: CGRect(x: margin, y: margin + CGFloat(i) * (labelHeight + spacing), width: labelWidth, height: labelHeight))
            label.text = "Label \(i+1)"
            label.backgroundColor = UIColor.lightGray
            label.textAlignment = .center
            self.view.addSubview(label)
        }
        
        for i in 0..<buttonCount {
            let button = UIButton(frame: CGRect(x: margin + CGFloat(i) * (buttonWidth + spacing), y: margin + CGFloat(labelCount) * (labelHeight + spacing) + margin, width: buttonWidth, height: buttonHeight))
            button.setTitle("Button \(i+1)", for: .normal)
            button.backgroundColor = UIColor.blue
            self.view.addSubview(button)
        }
    }
}