Hashing in the data structure is a technique of mapping a large chunk of data into small tables using a hashing function. It is also known as the message digest function. It is a technique that uniquely identifies a specific item from a collection of similar items.
It uses hash tables to store the data in an array format. Each value in the array has assigned a unique index number. Hash tables use a technique to generate these unique index numbers for each value stored in an array format. This technique is called the hash technique.
Hashing in a data structure is a two-step process:
- The hash function converts the item into a small integer or hash value. This integer is used as an index to store the original datadata.
- It stores the data in a hash table. You can use a hash key to locate data quickly.
