Data Structures & Algo in Java

Learn Data Structures and Algorithms in Java — the way it is tested in coding interviews and campus placement drives.

Each concept is explained clearly and paired with runnable Java code and practice problems, so you build real problem-solving skill, not just theory.

🌟 KEY FEATURES

📚 Structured DSA Lessons
Work through arrays, strings, linked lists, stacks, queues and hashing, then climb to binary trees, graphs, heaps and tries. Each subtopic gives clear theory, guided practice and a quick summary, with plain-English explanations of recursion, sorting, searching, two-pointer and sliding-window patterns, greedy techniques and dynamic programming (DP) — including classics like the knapsack problem, longest common subsequence and matrix DP. Time and space complexity (Big-O) is broken down for every approach.

💻 Built-in Java Code Runner
Write and execute Java right inside the app's code editor and compiler. Tackle interview-style coding problems backed by hidden test cases, compare your code with optimized reference solutions, and let the AI verify your output. The compiler also supports Python, C++, C, Go, JavaScript, Kotlin, Rust, Dart and Swift when you want to compare.

🧠 Quizzes and Mock Tests
Sharpen recall with topic-wise multiple-choice quizzes that step from Easy to Medium to Hard, each answer fully explained. Take timed mock tests blending theory, MCQ and coding questions, with result analytics, weak-topic flags and improvement tips.

🤖 Smart Mentor AI Tutor
Ask anything about a sliding-window trick, a binary tree traversal or a confusing graph algorithm, get lesson-aware help, run a realistic mock-interview session, or snap a photo of code or a diagram for instant feedback. Generate a 7-day study plan covering concept review, problem solving and interview practice.

📊 Track Your Progress
Watch scores trend over time, log study minutes, build streaks and hit daily goals. A daily check-in quiz and AI revision card keep momentum, while leaderboards add friendly competition.

🌐 Built for Everyone
Works offline, ships with light and dark themes, and offers a multi-language interface (English plus Hindi, Kannada, Tamil and Telugu) that keeps code and technical terms intact during translation. A Tech Updates feed keeps you current.

📚 DSA SYLLABUS COVERAGE
📝 Data structures: arrays, strings, linked lists, stacks, queues, hashing, binary trees, graphs, heaps, tries
🧮 Algorithms: sorting, searching, recursion, two-pointer, sliding window, greedy, dynamic programming — knapsack, longest common subsequence, matrix DP
⏱️ Analysis: time and space complexity with Big-O notation for every approach

📌 WHO IS THIS FOR?
Students preparing for coding interviews, FAANG assessments and campus placement drives who need to master Data Structures and Algorithms in Java — from arrays, linked lists, stacks, queues and hashing through binary trees, graphs, heaps and tries, up to dynamic programming, greedy algorithms and Big-O complexity analysis. The built-in Java compiler lets you run and test real solutions on your phone, and the mock-interview mode simulates actual interview pressure so you walk in confident.

This app supports interview preparation, campus placements and general problem-solving study.

Java is a trademark of its respective owner. This app is independent and is not affiliated with, sponsored or endorsed by any trademark holder.