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Solution: Design HashSet

Understand how to design a custom HashSet class without built-in libraries by implementing key methods: add, remove, and contains. Explore the use of a hash function for key distribution and separate chaining using binary search trees to resolve collisions efficiently. This lesson helps you master custom data structures and their time and space complexity implications.

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

  • At most, 10410^4 ...