Premium Problems with Editorials
Hand-picked interview problems, each with a full editorial: the intuition, the brute force, and the optimal solution.
About Premium Problems with Editorials
A curated set of problems that interviewers really ask, grouped by pattern. Each comes with an editorial: how to think about it, a brute-force first attempt, why that is too slow, and the optimal solution with its complexity.
You write and run code for each one against hidden test cases, the same way an online judge checks you.
Why it matters for placements
Solving many random problems is slower than solving the right ones well. These are the problems and follow-ups that come up again and again in real rounds.
What you'll learn
3 topics · 12 lessons, each with practice
- Move from brute force to the optimal solution the way interviewers expect
- Explain your approach and complexity out loud before coding
- Handle edge cases that hidden test cases check
- Recognise which pattern a new problem belongs to
Interview Ready Interview Ready
Take Interview Ready testRecommended. Enough for technical rounds at good product companies.
Problems by Pattern
Not startedMost interview problems are a known pattern in disguise, and the hard part is spotting which one. Each editorial here takes one problem per pattern and walks from the brute force to the optimal answer, so you learn the step that interviewers actually test.
Online Assessment Sets
Not startedOnline assessments are timed and graded by hidden tests, so a solution that passes the samples can still fail on size or edge cases. These editorials show the kind of question each style of OA asks and the upgrade that gets you full marks.
Advanced Advanced
Take Advanced testOptional. For top product companies. Never counted against your readiness.