Learn the Pattern Once, Solve 10 LeetCode Problems.
Curated C++ implementations of every major DSA pattern and Low-Level Design system used to crack Google and top-tier tech interviews. Track your progress, review edge cases, and test your pattern recognition.
Problems Mastered
Currently Solving
Flagged for Review
Key Interview Questions
Keep Consistency!
14 Core DSA & LLD Categories
Select any pattern group to start tracking and viewing C++ source solutions
All Patterns & Problems
Filter by category, difficulty, or completion status. Click any problem to view the complete C++ implementation.
Low-Level Design (LLD) Studio
Full enterprise-grade C++ implementations of 9 classic Low-Level Design interview questions. Includes clean class hierarchies, design pattern usage (Singleton, Strategy, Observer, State, Factory), and interactive runnable simulation test beds.
Can You Spot the Right Pattern?
In top interviews, identifying the correct algorithmic pattern in the first 2 minutes is 80% of the battle. Test yourself!