What are structural?

Answer 1

Structures are data structures, which includes arrays, linked-lists, doubly-linked lists, circular lists, trees, binary trees and balanced binary trees, amongst many others. They are simply frameworks that are used to represent and manipulate data. For instance, a self-balancing binary tree is often used to automatically sort data as it is input, allowing for fast search and retrieval of that data. Lists are typically used for unsorted queues and stacks while arrays are typically used for high-speed random access.