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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: 20 Feb 2026

Timeframe

Difficulty

Problem	Difficulty	Frequency	Topics
Letter Combinations of a Phone Number	MEDIUM	37.5%	Hash TableStringBacktracking
Shortest Way to Form String	MEDIUM	75%	Two PointersStringBinary SearchGreedy
Count and Say	MEDIUM	87.5%	String
Unique Paths II	MEDIUM	37.5%	ArrayDynamic ProgrammingMatrix
The Number of Weak Characters in the Game	MEDIUM	37.5%	ArrayStackGreedySortingMonotonic Stack
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	75%	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	87.5%	ArrayBinary SearchDynamic ProgrammingSorting
Reconstruct Itinerary	HARD	100%	ArrayStringDepth-First SearchGraph TheorySortingHeap (Priority Queue)Eulerian Circuit
Count Subarrays With Score Less Than K	HARD	87.5%	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

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