Defining a hash function

A hash function is the center of any solution to the mapping problem we saw earlier. Understanding a hash function is very important before exploring the internal workings of a hash table.

Mathematical function

In pure mathematics, a function from set K to V is defined as the logic that assigns exactly one value in V to every element in K. The set K is the domain, and V is the function's codomain. In simple terms, a mathematical function is essentially something that maps values from a set K to a set V. These sets can have data of any type (integers, strings, objects, etc.).