Data structures are like various geometric shapes we have learned, they look like their names. There are categories such as arrays, linked lists, stacks, queues, trees, heaps, graphs, etc., and some categories have many subcategories.
Inserting a sentence, it feels like we still need to introduce some things related to the system, such as memory, external storage, complement, ones' complement, two's complement, and also encoding methods. Only then can it be considered complete, but pursuing a perfect state from the beginning is never a good thing (especially in my inexperienced situation), but we should strive for consistency and improvement.
In the next section, let's talk about arrays.