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Grokking the Coding Interview Patterns in Python

Solution: Design HashSet

Explore how to design a custom HashSet without built-in hash tables by combining a hash function with separate chaining using binary search trees. Understand key insertion, deletion, and lookup by implementing a bucket array of BSTs to manage collisions efficiently.

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Statement

Design a MyHashSet class without using any built-in hash table libraries and implement the following methods in it:

  • void add(key): Inserts the value key into the HashSet.

  • bool contains(key): Returns TRUE if the key exists in the HashSet, FALSE otherwise.

  • void remove(key): Removes the value key if it exists in the HashSet.

Constraints:

  • 00 ≤\leq key ≤106\leq 10^6 ...