Data Structures & Algorithms — Topics

What data structures are, why they matter, and how to choose the right one.

The simplest, most-used data structure — and where every DSA journey begins.

Nodes connected by pointers — flexible where arrays are rigid.

LIFO vs FIFO — two simple structures behind undo buttons, browsers, and task schedulers.

Bubble, Merge, and Quick Sort — how computers put things in order, and at what cost.

A function calling itself — the key to trees, mazes, and puzzle-solving problems.

Hierarchical data structures that power databases, file systems, and more.