如何仅靠右对齐UItablecell的字符串的一部分

class CustomTableViewCell: UITableViewCell {
    var contentLabel: UILabel!
    
    override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
        super.init(style: style, reuseIdentifier: reuseIdentifier)
        
        // 初始化contentLabel
        contentLabel = UILabel()
        contentLabel.textAlignment = .right
        contentLabel.numberOfLines = 0
        contentView.addSubview(contentLabel)
    }
    
    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    override func layoutSubviews() {
        super.layoutSubviews()
        
        // 调整contentLabel的frame
        let padding: CGFloat = 10
        let labelWidth = contentView.bounds.width - 2 * padding
        let labelHeight = contentView.bounds.height - 2 * padding
        contentLabel.frame = CGRect(x: padding, y: padding, width: labelWidth, height: labelHeight)
    }
}

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: "CustomTableViewCell", for: indexPath) as! CustomTableViewCell
    
    // 设置字符串的部分内容为右对齐
    let text = "这是一段示例文本，其中一部分需要右对齐。"
    let attributedText = NSMutableAttributedString(string: text)
    let range = NSRange(location: 5, length: 6) // 设置需要右对齐的部分范围
    let paragraphStyle = NSMutableParagraphStyle()
    paragraphStyle.alignment = .right
    attributedText.addAttribute(.paragraphStyle, value: paragraphStyle, range: range)
    cell.contentLabel.attributedText = attributedText
    
    return cell
}