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Decode the Coding Interview in Swift: Real-World Examples

DIY: Insert, Delete, and GetRandom in O(1)

Explore how to implement a data structure supporting insert, delete, and random retrieval in O(1) time. This lesson helps you master efficient coding techniques crucial for real-world interview problems at companies like Amazon.

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Problem statement

Implement a set data structure that can perform the following operations:

  • insert(data): This function should insert data into the set (if the set does not contain it already). It should return false if the data already exists in the set. Otherwise,
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