C# | Check if a HashSet contains the specified element

A HashSet is an unordered collection of the unique elements. It is found in System.Collections.Generic namespace. It is used in a situation where we want to prevent duplicates from being inserted in the collection. As far as performance is concerned, it is better in comparison to the list. HashSet is used to check whether a HashSet

Reference:

• https://learn.microsoft.com/en-us/dotnet/api/system.collections.generic.hashset-1.contains?view=netframework-4.7.2