Problems
Callback's own problems and the LeetCode questions companies have been asking, in one place — filter by category, company, topic, difficulty, and how recently a question showed up.
Asked on LeetCode
3,110 questions · all time
- Minimum Cost for Cutting Cake IIhardArrayGreedySorting1 company
- Minimum Cost to Buy Apples IIhardArrayGraph TheoryHeap (Priority Queue)Shortest Path1 company
- Minimum Cost to Convert String IIIhard1 company
- Minimum Cost to Make Arrays IdenticalmediumArrayGreedySorting1 company
- Minimum Cost to Split into OnesmediumMathDynamic Programming1 company
- Minimum Hours of Training to Win a CompetitioneasyArrayGreedy1 company
- Minimum Impossible ORmediumArrayBit ManipulationBrainteaser1 company
- Minimum K to Reduce Array Within LimitmediumArrayBinary Search1 company
- Minimum Non-Zero Product of the Array ElementsmediumMathGreedyRecursion1 company
- Minimum Number of Operations to Make Arrays SimilarhardArrayGreedySorting1 company
- Minimum Number of Swaps to Make the Binary String AlternatingmediumStringGreedy1 company
- Minimum Number of Work Sessions to Finish the TasksmediumArrayDynamic ProgrammingBacktrackingBit Manipulation+11 company
- Minimum Operations to Make Array EqualmediumMath1 company
- Minimum Seconds to Equalize a Circular ArraymediumArrayHash Table1 company
- Minimum Subarray Length With Distinct Sum At Least KmediumArrayHash TableSliding Window1 company
- Minimum Time for K Connected ComponentsmediumBinary SearchUnion-FindGraph TheorySorting1 company
- Minimum Time to Complete All TaskshardArrayBinary SearchStackGreedy+11 company
- Minimum Total Cost to Make Arrays UnequalhardArrayHash TableGreedyCounting1 company
- Minimum XOR Path in a GridmediumArrayDynamic ProgrammingBit ManipulationMatrix1 company
- Missing Number In Arithmetic ProgressioneasyArrayMath1 company
- Movement of RobotsmediumArrayBrainteaserSortingPrefix Sum1 company
- Next Greater Element IVhardArrayBinary SearchStackSorting+21 company
- Number of Arithmetic TripletseasyArrayHash TableTwo PointersEnumeration1 company
- Number of Different Subsequences GCDshardArrayMathCountingNumber Theory+21 company
- Number of Same-End SubstringsmediumArrayHash TableStringCounting+11 company
- Number of Valid Move Combinations On ChessboardhardArrayStringBacktrackingSimulation1 company
- Odd and Even TransactionsmediumDatabase1 company
- Partition Array Into K-Distinct GroupsmediumArrayHash TableCounting1 company
- Partition Array into Two Equal Product SubsetsmediumArrayBit ManipulationRecursionEnumeration1 company
- Partition Array to Minimize XORmediumArrayDynamic ProgrammingBit ManipulationPrefix Sum1 company
- Pizza Toppings Cost AnalysismediumDatabase1 company
- Poor PigshardMathDynamic ProgrammingCombinatorics1 company
- Prime In DiagonaleasyArrayMathMatrixNumber Theory1 company
- Properties GraphmediumArrayHash TableDepth-First SearchBreadth-First Search+21 company
- Queens That Can Attack the KingmediumArrayMatrixSimulation1 company
- Reachable Nodes In Subdivided GraphhardGraph TheoryHeap (Priority Queue)Shortest PathDijkstra's Algorithm1 company
- Reachable Nodes With RestrictionsmediumArrayHash TableTreeDepth-First Search+31 company
- Restore The ArrayhardStringDynamic Programming1 company
- Select K Disjoint Special SubstringsmediumHash TableStringDynamic ProgrammingGreedy+11 company
- Shift Distance Between Two StringsmediumArrayStringPrefix Sum1 company
- Shortest Distance in a PlanemediumDatabaseNearest Pair of Points1 company
- Smallest Index With Digit Sum Equal to IndexeasyArrayMath1 company
- Snake in MatrixeasyArrayStringSimulation1 company
- Sort Integers by Binary ReflectioneasyArraySorting1 company
- Sort the Students by Their Kth ScoremediumArraySortingMatrix1 company
- Split and Merge Array TransformationmediumArrayHash TableBreadth-First Search1 company
- Stone Game VhardArrayMathDynamic ProgrammingGame Theory1 company
- Subarrays Distinct Element Sum of Squares IeasyArrayHash TableSegment Tree1 company
- Subsequence After One Replacementmedium1 company
- Sum of Beautiful SubsequenceshardArrayMathBinary Indexed TreeNumber Theory1 company
Listings only — titles, difficulty, and tags link out to LeetCode. Imported from the leetcode-company-wise-problems snapshot dated 1 June 2025. Frequency is that dataset's own relative score within a company and time range.