How to use List<List<int>> as parameter in method?-CodePudding

I haven't found any description or explanation how to insert List< List of int> as parameter with values in method nor to Console.WriteLine()

I have tried some variants, but non of them seems to work. So I'm trying to find help here.

    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine(Result.ListManipulation()));
        //I want to insert 3 Lists and manipulate with them inside the method
        //List<int>{11, 2, 4 };
        //List<int>{4, 5, 6};
        //List<int>{10, 8, -12};
            Console.ReadLine();
        }
    }
        class Result
        {
            public static int ListManipulation(List<List<int>> arr)
            { 
                //Manipulation with those 3 Lists
                return 0;
           }
        }

If You have some easy to use explanation, I'm open for Your knowledge!

Thanks for your help

CodePudding user response：

All you should do is to create and fill the nested List<List<int>>:

...
// You should create a nested List - new List<List<int>>()...
List<List<int>> myList = new List<List<int>>() {
  // ... and fill it line by line 
  new List<int>() { 11, 2,   4 },
  new List<int>() {  4, 5,   6 },
  new List<int>() { 10, 8, -12 },
}; 

int result = ListManipulation(myList);

...