find the average of all keys in a map in csharp

main.cs
using System.Linq;
using System.Collections.Generic;

// assume we have a dictionary with integer keys and string values
Dictionary<int, string> myMap = new Dictionary<int, string>();

// add some key-value pairs to the dictionary
myMap.Add(1, "apple");
myMap.Add(2, "banana");
myMap.Add(3, "cherry");
myMap.Add(4, "date");

// calculate the average of keys using LINQ
double average = myMap.Keys.Average();

// print the average
Console.WriteLine("Average of keys: " + average);
480 chars
18 lines