9 lessons
Array / String
LeetCode #1768 · Easy · Interactive step-by-step visualization LeetCode #1071 · Easy · Interactive step-by-step visualization
Course overview
Everything you need to learn with confidence
Visual explanations
See concepts execute, move, and connect instead of memorizing static notes.
Code that stays in sync
Follow the relevant code while each algorithm or system step unfolds.
Structured support
Use guided intros, step descriptions, progress tracking, and focused outcomes.
Skills you'll gain
Core areas you will understand and practice throughout the course.
Array / String
Two Pointers
Sliding Window
Prefix Sum
Hash Map / Set
Stack
Queue
Linked List
Binary Tree - DFS
Binary Tree - BFS
How you'll learn
The tools and learning modes built into this path.
Official 75-question ordering
Pattern-specific visual models
Synced code and narration
Question-by-question progress
What you'll be able to do
Practical outcomes from the first major parts of the learning path.
4 lessons
Two Pointers
LeetCode #283 · Easy · Interactive step-by-step visualization LeetCode #392 · Easy · Interactive step-by-step visualization
4 lessons
Sliding Window
LeetCode #643 · Easy · Interactive step-by-step visualization LeetCode #1456 · Medium · Interactive step-by-step visualization
Course curriculum
22 modules · 75 guided lessons
Move through the course in order or open the exact topic you need. Every lesson includes a clear objective and estimated duration.
Greatest Common Divisor of Strings
LeetCode #1071 · Easy · Interactive step-by-step visualization
Kids With the Greatest Number of Candies
LeetCode #1431 · Easy · Interactive step-by-step visualization
Reverse Words in a String
LeetCode #151 · Medium · Interactive step-by-step visualization
Product of Array Except Self
LeetCode #238 · Medium · Interactive step-by-step visualization
Increasing Triplet Subsequence
LeetCode #334 · Medium · Interactive step-by-step visualization
String Compression
LeetCode #443 · Medium · Interactive step-by-step visualization
Ready when you are
Start building real Interview Prep confidence.
Learn at your own pace, keep your progress across devices, and return to any lesson whenever you need a refresher.
Questions
Frequently asked questions
Is this course free?
The first lesson is available as a preview. Complete lifetime access is a one-time payment of ₹399. When enrollment is open, payment is completed on Cashfree's hosted checkout and verified securely before access is granted.
Do I need prior experience?
The course is marked Intermediate. Each module begins with guided context, so you can follow the sequence even when a topic is new.
How long will the course take?
The curriculum contains 75 lessons with approximately 27h 35m of guided material. You can learn at your own pace.
Will my progress be saved?
Yes. Signed-in learners have course progress, daily activity, streaks, and interview-practice completion stored privately in their profile.
Learner reviews
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