DSA Beginner
Arrays & Strings Indexing, traversal, two-pointers, and common string manipulation patterns.
20 questions Not attempted
DSA Beginner
Big-O & Complexity Analysis Reasoning about time and space complexity of algorithms.
20 questions Not attempted
Frontend Beginner
React Fundamentals Components, hooks, props, state, and the rendering lifecycle.
20 questions Not attempted
Frontend Beginner
CSS & Layout Box model, Flexbox, Grid, positioning, and responsive design.
20 questions Not attempted
Backend Intermediate
Node.js & REST APIs Express routing, middleware, HTTP methods, and API design.
20 questions Not attempted
AI/ML Beginner
Machine Learning Basics Core ML concepts: supervised/unsupervised learning, overfitting, and evaluation.
20 questions Not attempted
DevOps Intermediate
Docker & Git Workflows Containers, images, branching strategies, and CI/CD fundamentals.
20 questions Not attempted
Databases Beginner
SQL Fundamentals Queries, joins, keys, normalization, and indexing.
20 questions Not attempted
Databases Intermediate
NoSQL & Firestore Document models, collections, security rules, and real-time listeners.
20 questions Not attempted