从linq中的列表列表中获取公共记录

using System;
using System.Collections.Generic;
using System.Linq;

public class Program
{
    public static void Main()
    {
        List<List<int>> listOfLists = new List<List<int>>()
        {
            new List<int>() { 1, 2, 3, 4 },
            new List<int>() { 3, 4, 5, 6 },
            new List<int>() { 4, 5, 6, 7 }
        };

        List<int> commonRecords = listOfLists
            .Skip(1) // 从第二个列表开始比较
            .Aggregate(new HashSet<int>(listOfLists.First()), (h, e) => { h.IntersectWith(e); return h; })
            .ToList();

        Console.WriteLine("公共记录：");
        foreach (int record in commonRecords)
        {
            Console.WriteLine(record);
        }
    }
}