如何使用二维数组显示城镇 C# 之间的距离

Question

I have a task to display the distances between towns using 2D arrays. With the table I have already got with my code what would I add to make it look like the desired output shown below. The distances between towns need to be a 2D array. Any help is appreciated. Desired Output Here is the code I already have that I need to add to:

        [1]String[] Towns = new String[20];
        int[,] Distance = new int[10, 10];
        Towns[0] = "Castletown";
        Towns[1] = "Douglas";
        Towns[2] = "Peel";
        Towns[3] = "Ramsey";
        Distance[0, 0] = 0; 
        Distance[0, 1] = 11; 
        Distance[0, 2] = 12; 
        int NumberOfTowns = 4;

        Console.WriteLine("\t" + string.Join("\t", Towns)); // Print towns row accross

        for (int k = 0; k < NumberOfTowns; k++)
        {
            Console.Write(Towns[k].PadLeft(3) + "\t"); // Print towns row down
            Console.WriteLine();
        }
        Console.ReadKey();

Answer 1

Well you are missing the distance between 0 Castletown and 3 Ramsey so you definitely need Distance[0, 3] = 26;

Also if we have one axis than the distance between Douglas and Peel should be 1 not 10 like in the desired outcome picture and between Ramsey and Peel it should be 14 not 15 but maybe I misunderstood the problem :D let me know if I did

I would approach it a little bit different, I think its easier if you use a dictionary instead of the arrays but you can do the same with arrays as well. My code looks something like this:

class Program
{
    static void Main(string[] args)
    {
        //init dictionary
        var Towns = new Dictionary<string, int>()
        {
            { "Castletown" , 0 },
            { "Douglas" , 11},
            { "Peel  " , 12},
            { "Ramsey", 26}
        };

        //print header
        Console.Write("\t");
        foreach (var town in Towns)
        {
            Console.Write("\t" + town.Key); 
            
        }
        Console.WriteLine();

        //print rows
        foreach (var town in Towns)
        {
            Console.Write(town.Key+ "   " + "\t"); // print town name
            foreach (var toown in Towns)//print distances
            {
                Console.Write(Math.Abs(town.Value-toown.Value) + "\t") ;
            }
                Console.WriteLine();
        }
    }
}

Naming could be better and you might need to tweek the spacing but it does what you wanted.