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Computer Science Guides

Deep dive into theoretical and applied computer science. Learn Big-O time and space complexity, sorting algorithms, linked lists, trees, graphs, operating system processes, and CPU architectures.

What Is an Algorithm? Problem Solving and Computational Logic

Understand what an algorithm is, how step-by-step computational logic works, common real-world algorithms (Binary Search, Sorting), and pseudocode.

7 min read • Beginner

What Is Big O Notation? Algorithmic Complexity Made Simple

Learn Big O notation with simple charts and code examples. Understand O(1), O(log N), O(N), O(N log N), O(N^2), time vs space complexity.

8 min read • Intermediate

What Is an Operating System? Kernels, Memory, and Hardware Control

Learn what an operating system (OS) does: kernel architecture, CPU process scheduling, virtual memory management, file systems, and system calls.

8 min read • Intermediate