如何在asp.net mvc5 html表中测试行中的字符串与下一行的值的等价性

public ActionResult Index()
{
    // 模拟数据
    List<string> data = new List<string> { "A", "B", "B", "C", "D" };

    return View(data);
}

@model List<string>

<table>
    <tr>
        <th>字符串</th>
        <th>下一行的值</th>
        <th>等价性测试结果</th>
    </tr>
    @for (int i = 0; i < Model.Count; i++)
    {
        <tr>
            <td>@Model[i]</td>
            <td>@(i < Model.Count - 1 ? Model[i + 1] : "")</td>
            <td>
                @if (i < Model.Count - 1 && Model[i] == Model[i + 1])
                {
                    <span>等价</span>
                }
                else
                {
                    <span>不等价</span>
                }
            </td>
        </tr>
    }
</table>