Watch real code execute line-by-line with stunning animations, AI voiceovers, and an interactive compiler.
No more passive reading. Watch → Understand → Prove it.
Every line of code is animated with voice narration. See exactly how the algorithm thinks — pointer by pointer, step by step.
Read the prerequisites, study the brute force vs optimal approach. Know the "aha moment" before you code.
Write your solution in Python. Run against real test cases. Get instant pass/fail feedback. Mark it solved — all without leaving the platform.
Master these 10 patterns in order. Each builds on the last. Pattern recognition is the real skill.
Currently: Arrays Only (30 videos)
Linked Lists · Trees · Graphs · DP · Strings — coming soon! Subscribe to get notified.
Array Fundamentals
Traversal · Indexing · Reverse
Frequency Counting
HashMap · Count · Duplicates
Two Pointers
Sorted · Pairs · In-place
Sliding Window
Subarray · Window · Range
Prefix Sum
Cumulative · Range Query
Kadane's Algo
Max Subarray · Running Sum
Binary Search
Sorted · Eliminate Half
Sort + Intervals
Intervals · Overlap · Sort
Monotonic Stack
Next Greater · Histogram
Greedy Arrays
Local Optimal · Jumps
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