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Pinterest LeetCode Questions 2026

Browse LeetCode problems frequently asked by Pinterest. Filter by difficulty and timeframe to focus your interview prep.

Last updated: 10 July 2026

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Timeframe

Difficulty

Problem	Difficulty	Frequency	Topics
Letter Combinations of a Phone Number	MEDIUM	37.5%	Hash TableStringBacktracking
Shortest Way to Form String	MEDIUM	87.5%	Two PointersStringBinary SearchGreedy
Count and Say	MEDIUM	75%	String
Meeting Rooms II	MEDIUM	37.5%	ArrayTwo PointersGreedySortingHeap (Priority Queue)Prefix Sum
Minimize Result by Adding Parentheses to Expression	MEDIUM	37.5%	StringEnumeration
Expression Add Operators	HARD	87.5%	MathStringBacktracking
Find Median from Data Stream	HARD	62.5%	Two PointersDesignSortingHeap (Priority Queue)Data Stream
Sparse Matrix Multiplication	MEDIUM	62.5%	ArrayHash TableMatrix
Coin Change	MEDIUM	75%	ArrayDynamic ProgrammingBreadth-First Search
Maximum Profit in Job Scheduling	HARD	75%	ArrayBinary SearchDynamic ProgrammingSorting
Reconstruct Itinerary	HARD	100%	ArrayStringDepth-First SearchGraph TheorySortingHeap (Priority Queue)Eulerian Circuit
Count Subarrays With Score Less Than K	HARD	75%	ArrayBinary SearchSliding WindowPrefix Sum
Shortest Path in a Grid with Obstacles Elimination	HARD	87.5%	ArrayBreadth-First SearchMatrix
Is Subsequence	EASY	75%	Two PointersStringDynamic Programming
String Compression	MEDIUM	50%	Two PointersString
Optimal Account Balancing	HARD	100%	ArrayDynamic ProgrammingBacktrackingBit ManipulationBitmask
Find Median Given Frequency of Numbers	HARD	62.5%	Database
Design Search Autocomplete System	HARD	62.5%	StringDepth-First SearchDesignTrieSortingHeap (Priority Queue)Data Stream
Longest Word in Dictionary	MEDIUM	75%	ArrayHash TableStringTrieSorting
Reorganize String	MEDIUM	50%	Hash TableStringGreedySortingHeap (Priority Queue)Counting

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