What are hash table collisions and how can they be resolved?
Hash table collisions occur when two keys hash to the same index. They can be resolved using methods like chaining or open addressing.
Can you explain chaining in more detail?
Sure! Chaining involves maintaining a list of all entries that hash to the same index. When a collision occurs, the new entry is added to this list.
What about open addressing? How does that work?
Open addressing finds another open slot in the hash table when a collision occurs. Techniques include linear probing, quadratic probing, and double hashing.
Which method is generally more efficient?
It depends on the use case. Chaining can be more efficient with many collisions, while open addressing can be better with fewer collisions.
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