A data structure is basically a way to organise data in a computer, specifically in RAM. RAM is stored in bytes (8 bits) and bits are just 0s and 1s. For example, 8GB of RAM is about 8 billion bytes.
Arrays are the foundation of many data structures. They store data contiguously in memory, making access fast and predictable. This category covers static arrays, dynamic arrays, and stacks, which build on array concepts.
Linked lists offer flexibility by connecting nodes through pointers rather than requiring contiguous memory. This category explores singly linked lists, doubly linked lists, and queues, which leverage linked list principles.