Hashing is a technique for storing and retrieving data as fast as possible. The main reason behind using hashing is that it gives optimal results as it performs optimal searches.
Applications of Hashing
- Database Indexing
- Disk-based data structures.
Real-Time Applications of Hash:
- Caching mapping for fast access of the data.
- Password verification.
Using Hash Tables
Hash table gives the functionality in which a collection of data is stored in such a way that it is easy to find those items later if required. This makes searching of an element very efficient. It is comparable to an array
Understanding Hash Function
A function that converts a given big phone number to a small practical integer value. The mapped integer value is used as an index in a hash table. A hash function is used to transform a given key into a specific slot index.