Set initialization in C#

Arrays and collections / Sets

Set initialization
Finding an element
Adding and removing elements
Iterating over a set
Set comparison
Sorting elements
Set operations
Converting a set
HashSet and SortedSet

using System;
using System.Collections.Generic;

var intSet = new HashSet<int> {1, 2, 3};
var strSet = new HashSet<string> { "one", "two", "three" };

Console.WriteLine(string.Join(", ", intSet));
Console.WriteLine(string.Join(", ", strSet));