Coding interview questions

Pinterest Coding Interview Questions (DSA)

The 14 DSA problems Pinterest has asked most in the last six months, most-asked first. 14 of them have a full breakdown with diagrams and code. Tick them off as you go.

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14problems
14full breakdowns
29topics

By difficulty: Medium (8) · Hard (6)

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Topics

332.Reconstruct Itinerary
Full breakdownArrayStringDepth-First Search
465.Optimal Account Balancing
Full breakdownArrayDynamic ProgrammingBacktracking
815.Bus Routes
Full breakdownArrayHash TableBreadth-First Search
322.Coin Change
Full breakdownArrayDynamic ProgrammingBreadth-First Search
Medium+4▶ Mock
282.Expression Add Operators
Full breakdownMathStringBacktracking
1055.Shortest Way to Form String
Full breakdownTwo PointersStringBinary Search
Medium▶ Mock
1244.Design A Leaderboard
Full breakdownHash TableDesignSorting
Medium▶ Mock
410.Split Array Largest Sum
Full breakdownArrayBinary SearchDynamic Programming
43.Multiply Strings
Full breakdownMathStringSimulation
Medium▶ Mock
642.Design Search Autocomplete System
Full breakdownStringDepth-First SearchDesign
1564.Put Boxes Into the Warehouse I
Full breakdownArrayGreedySorting
Medium▶ Mock
445.Add Two Numbers II
Full breakdownLinked ListMathStack
Medium▶ Mock
494.Target Sum
Full breakdownArrayDynamic ProgrammingBacktracking
Medium▶ Mock
443.String Compression
Full breakdownTwo PointersString
Medium▶ Mock

Frequently Asked Questions

What questions does Pinterest ask in coding interviews?

Pinterest coding interviews focus on 0-1 Knapsack, Array, Backtracking, Binary Search, and other data structure problems. We compiled 14 questions from real Pinterest interviews. The most common topics are 0-1 Knapsack, Array, Backtracking, Binary Search, Bit Manipulation. Filter by topic to see what comes up most often.

How many Pinterest coding interview questions are there?

InterviewSkool has 14 Pinterest coding interview questions: 0 Easy, 8 Medium, and 6 Hard. Most Pinterest interviews focus on Medium-difficulty problems, so prioritize those in your prep.

How should I prepare for Pinterest coding interviews?

Start with Medium difficulty problems. Group by topic (Array, Tree, DP) to build pattern recognition. Aim to solve 30 to 40 problems before your interview. Then practice under pressure with a mock interview.

Are Pinterest coding interview questions free?

Yes. All 14 Pinterest coding interview questions are free to browse with no sign-up required. You can filter by difficulty and topic tags. Start a mock interview with a free credit to practice under real pressure.

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