How will you implement sets and the intersection operation? Complexity?
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Answer / Vikas Kumar Tyagi
In Swift, sets are implemented using `Set` data type. To find the intersection of two sets, you can simply use the `intersection(_:)` method.nComplexity: Adding an element to a set takes O(1) time, while finding the intersection takes O(min(n, m)) time, where n and m are the number of elements in both sets.
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