Solve DSA problemswithout the answer key.
The Rubber Duck is a Socratic companion for algorithm problems. It never gives you the solution ā it asks the right questions until you find it yourself.
Questions that trigger "Aha!" moments
"Where exactly does your current logic break at the edge cases?"
"If you can't use a Hash Map, what's your next move?"
Answering these questions is usually enough to crack the problem.
The duck doesn't solve ā you do.
Three steps to the optimal solution
Paste the Problem
Drop your DSA problem statement. Two Sum, LRU Cache, whatever's keeping you up.
Think Out Loud
The Duck asks Socratic questions ā forcing you to articulate your brute force and bottlenecks.
Own the Solution
No spoon-fed answers. You arrive at the O(n) math yourself, building true intuition.
Stop grinding. Start understanding.
Never gives you the answer
Forces you to reason through brute force ā optimal on your own.
Builds real intuition
Answering 'why does this break at edge cases?' is worth 10 LeetCode submits.
Works for any pattern
Sliding window, DP, graphs, greedy ā the duck adapts to your problem.
Free. No signup. Ever.
No accounts. No paywalls. Just you, the duck, and the algorithm.