Hash Function
The hash function is a function that takes a key and returns an index into the hash table. The goal of a hash function is to distribute keys evenly across the hash table, minimizing collisions (when two keys map to the same index).
Common hash functions include:
- Division Method: Key % Hash Table Size
- Multiplication Method: (Key * Constant) % Hash Table Size
- Universal Hashing: A family of hash functions designed to minimize collisions
Hashing in Data Structure
Hashing is a fundamental data structure that efficiently stores and retrieves data in a way that allows for quick access. It involves mapping data to a specific index in a hash table using a hash function that enables fast retrieval of information based on its key. This method is commonly used in databases, caching systems, and various programming applications to optimize search and retrieval operations.
Table of Content
- What is Hashing in Data Structure?
- Hash Table in Data Structure
- Hash Function
- What is a Hash Collision?
- Collision Resolution Techniques
- Applications of Hashing
- Basics of Hashing in Data Structure
- Easy Problem on Hashing
- Medium Problem on Hashing
- Hard Problem on Hashing
Contact Us