Leetcode Problem 705. Design HashSet

705. Design HashSet

Leetcode Solutions

Define the MyHashSet class with an array of linked lists (buckets).
Initialize the buckets with a prime number size to minimize collisions.
Implement the add method to insert a key into the hash set:
- Calculate the hash index for the key.
- Check if the key already exists in the bucket to avoid duplicates.
- If not, insert the key at the beginning of the linked list.
Implement the remove method to delete a key from the hash set:
- Calculate the hash index for the key.
- Search for the key in the linked list and remove it if found.
Implement the contains method to check if a key is present in the hash set:
- Calculate the hash index for the key.
- Search for the key in the linked list and return true if found, otherwise false.

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