A HashSet is an unordered collection of the unique elements. It comes under 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. Elements can be added to HashSet using HashSet
Here mySet is the name of the HashSet.
item: The element to add to the set.
Return Type: This method returns true if the element is added to the HashSet
Below given are some examples to understand the implementation in a better way:
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