midHash Tables
Double Hashing explained
Updated Apr 28, 2026
Short answer
Using a second hash function to determine the step size for probing when a collision occurs.
Deep explanation
Intermediate hash table mechanics focus on optimization and collision management. Using a second hash function to determine the step size for probing when a collision occurs.
Real-world example
Database indexing for unique identifiers.
Common mistakes
- Forgetting that resizing requires re-calculating the hash for every existing item.
Follow-up questions
- Why is table size usually a prime number?