在C#中搜索嵌套列表

using System;
using System.Collections.Generic;

public class Program
{
    public static void Main(string[] args)
    {
        // 示例嵌套列表
        List<object> nestedList = new List<object>
        {
            1,
            new List<object> { 2, 3 },
            4,
            new List<object> { 5, new List<object> { 6, 7 } }
        };

        // 要搜索的元素
        int target = 6;

        // 调用搜索函数
        object result = SearchNestedList(target, nestedList);

        // 输出结果
        if (result != null)
        {
            Console.WriteLine("找到了要搜索的元素：" + result);
        }
        else
        {
            Console.WriteLine("未找到要搜索的元素。");
        }
    }

    public static object SearchNestedList(object target, List<object> nestedList)
    {
        foreach (object item in nestedList)
        {
            if (item.Equals(target))
            {
                return item;
            }
            else if (item is List<object>)
            {
                object result = SearchNestedList(target, (List<object>)item);
                if (result != null)
                {
                    return result;
                }
            }
        }

        return null;
    }
}