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
Where, mySet1 and mySet2 are HashSets.
Return Type: This method returns true if the both HashSets share at least one common element otherwise it returns false.
Below given are some examples to understand the implementation in a better way :
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