Hash set in c#

Question

hi what is Hash set..where it is used in real time... explain with example thank u in advance

Kirtan Patel · Answer

Set data structure is a list with no duplicate values . It is more or less modeled after a mathematical set which has only unique elements. Although a HashSet is a list of elements it does not inherit the IList interface. Instead it just inherits the ICollection interface. What this means is elements inside a HashSet cannot be accessed through indices only through an enumerator (which is an iterator). Additionally since a C#.NET HashSet is modeled after a mathematical set certain functions were implemented such as Union  Intersection  IsSubsetOf  IsSupersetOf . These can come in handy when working with multiple sets. A resulting difference between a HashSet and a List is that the HashSet 's Add method is a boolean function which returns true of an element was added and false if it wasn't (because it was not unique). HashSet int > mySet = new HashSet int >(); mySet.Add(3); mySet.Add(5); mySet.Add(3); mySet.Add(10); List int > myListFromSet = mySet.ToList int >(); int myInt = myListFromSet[2];

srinivas reddy · Answer

Thank u Boss....