Question

it means unique elements or has no duplicate elemets

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Answer:

A Set is a Collection that cannot contain duplicate elements. It models the mathematical set abstraction.

Step-by-step explanation:

A set cannot have duplicate elements by its mere definition. The correct structure to allow duplicate elements is Multiset or Bag:For example, {a, a, b} and {a, b} are different multisets although they are the same set. However, order does not matter, so {a, a, b} and {a, b, a} are the same multiset.