为UITableView的每个部分添加单独的标题

class MyTableViewController: UITableViewController {
    let sectionTitles = ["Section 1", "Section 2", "Section 3"]
    let sectionData = [["Row 1", "Row 2", "Row 3"], ["Row 1", "Row 2"], ["Row 1", "Row 2", "Row 3"]]

    override func viewDidLoad() {
        super.viewDidLoad()
        tableView.register(UITableViewCell.self, forCellReuseIdentifier: "Cell")
    }

    // MARK: - UITableViewDataSource

    override func numberOfSections(in tableView: UITableView) -> Int {
        return sectionTitles.count
    }

    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return sectionData[section].count
    }

    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath)
        cell.textLabel?.text = sectionData[indexPath.section][indexPath.row]
        return cell
    }

    // MARK: - UITableViewDelegate

    override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        tableView.deselectRow(at: indexPath, animated: true)
        print("Selected row: \(sectionData[indexPath.section][indexPath.row])")
    }

    override func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
        return sectionTitles[section]
    }
}