用Dictionary数组填充Tableview并按节分隔

var data = [[String: Any]]()

override func viewDidLoad() {
    super.viewDidLoad()
    
    // 初始化数据源数组
    data = [
        ["title": "节标题1", "data": ["单元格1", "单元格2", "单元格3"]],
        ["title": "节标题2", "data": ["单元格4", "单元格5"]],
        ["title": "节标题3", "data": ["单元格6", "单元格7", "单元格8"]],
    ]
}

// 返回节（Section）数
func numberOfSections(in tableView: UITableView) -> Int {
    return data.count
}

// 返回每个节中的行数
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    let sectionData = data[section]
    let rowData = sectionData["data"] as! [String]
    return rowData.count
}

// 返回单元格的内容
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath)
    
    let sectionData = data[indexPath.section]
    let rowData = sectionData["data"] as! [String]
    let cellData = rowData[indexPath.row]
    
    cell.textLabel?.text = cellData
    
    return cell
}

// 返回节的标题
func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
    let sectionData = data[section]
    let sectionTitle = sectionData["title"] as! String
    return sectionTitle
}