TharunKumarReddyPolu

Free DSA handbook for coding interviews: data structures, algorithms, and LeetCode patterns with Python, Java, and C++ implementations, complexity tables, edge cases, and FAQs.

This handbook is a curated compilation of Low-Level Design (LLD) principles, object-oriented design patterns, and system modeling techniques frequently tested in software engineering interviews. Each topic includes core concepts, real-world examples, design trade-offs, along with links to practice resources and common pitfalls to avoid.