find the range of all keys in a map in csharp

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

// create a dictionary
var dictionary = new Dictionary<int, string>();

// add some key-value pairs
dictionary.Add(1, "one");
dictionary.Add(2, "two");
dictionary.Add(3, "three");
dictionary.Add(4, "four");

// find the range of keys
int minKey = dictionary.Keys.Min();
int maxKey = dictionary.Keys.Max();

// print the range
Console.WriteLine($"Minimum key: {minKey}");
Console.WriteLine($"Maximum key: {maxKey}");
470 chars
20 lines

main.cs
Minimum key: 1
Maximum key: 4
30 chars
3 lines