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
2,344 questions at Google · all time
- Department Highest SalarymediumDatabasefrequency 20.9
- Destroying AsteroidsmediumArrayGreedySortingfrequency 20.9
- Different Ways to Add ParenthesesmediumMathStringDynamic ProgrammingRecursion+2frequency 20.9
- Disconnect Path in a Binary Matrix by at Most One FlipmediumArrayDynamic ProgrammingDepth-First SearchBreadth-First Search+1frequency 20.9
- Distribute Coins in Binary TreemediumTreeDepth-First SearchBinary TreeDP on Treesfrequency 20.9
- Divisor GameeasyMathDynamic ProgrammingBrainteaserGame Theory+1frequency 20.9
- Eliminate Maximum Number of MonstersmediumArrayGreedySortingfrequency 20.9
- Employees Whose Manager Left the CompanyeasyDatabasefrequency 20.9
- Encode and Decode TinyURLmediumHash TableStringDesignHash Functionfrequency 20.9
- Evaluate Boolean Binary TreeeasyTreeDepth-First SearchBinary Treefrequency 20.9
- Exam RoommediumDesignHeap (Priority Queue)Ordered Setfrequency 20.9
- Final Prices With a Special Discount in a ShopeasyArrayStackMonotonic Stackfrequency 20.9
- Find All Lonely Numbers in the ArraymediumArrayHash TableCountingfrequency 20.9
- Find the Largest Area of Square Inside Two RectanglesmediumArrayMathGeometryfrequency 20.9
- Find the Maximum Length of Valid Subsequence IImediumArrayDynamic Programmingfrequency 20.9
- Find the Minimum Amount of Time to Brew PotionsmediumArraySimulationPrefix Sumfrequency 20.9
- Freedom TrailhardStringDynamic ProgrammingDepth-First SearchBreadth-First Searchfrequency 20.9
- Image OverlapmediumArrayMatrixfrequency 20.9
- Integer BreakmediumMathDynamic Programmingfrequency 20.9
- Largest Color Value in a Directed GraphhardHash TableStringDynamic ProgrammingGraph Theory+4frequency 20.9
- Largest Local Values in a MatrixeasyArrayMatrixfrequency 20.9
- Last Stone Weight IImediumArrayDynamic ProgrammingKnapsack Problem0-1 Knapsackfrequency 20.9
- Latest Time by Replacing Hidden DigitseasyStringGreedyfrequency 20.9
- Left and Right Sum DifferenceseasyArrayPrefix Sumfrequency 20.9
- Letter Tile PossibilitiesmediumHash TableStringBacktrackingCountingfrequency 20.9
- License Key FormattingeasyStringfrequency 20.9
- Longest Nice SubarraymediumArrayBit ManipulationSliding Windowfrequency 20.9
- Magical StringmediumTwo PointersStringfrequency 20.9
- Max Chunks To Make Sorted IIhardArrayStackGreedySorting+1frequency 20.9
- Maximize Subarray GCD ScorehardArrayMathEnumerationNumber Theoryfrequency 20.9
- Maximum Absolute Sum of Any SubarraymediumArrayDynamic Programmingfrequency 20.9
- Maximum Area Rectangle With Point Constraints ImediumArrayMathBinary Indexed TreeSegment Tree+3frequency 20.9
- Maximum Number of Words Found in SentenceseasyArrayStringfrequency 20.9
- Maximum Profit in Job SchedulinghardArrayBinary SearchDynamic ProgrammingSortingfrequency 20.9
- Maximum Score of a Good SubarrayhardArrayTwo PointersBinary SearchStack+2frequency 20.9
- Min Cost to Connect All PointsmediumArrayUnion-FindGraph TheoryMinimum Spanning Tree+3frequency 20.9
- Minimize Max Distance to Gas StationhardArrayBinary Searchfrequency 20.9
- Minimum Cost For TicketsmediumArrayDynamic Programmingfrequency 20.9
- Minimum Cost Path with Edge ReversalsmediumGraph TheoryHeap (Priority Queue)Shortest Pathfrequency 20.9
- Monotonic ArrayeasyArrayfrequency 20.9
- Most Stones Removed with Same Row or ColumnmediumHash TableDepth-First SearchUnion-FindGraph Theory+1frequency 20.9
- N-Queens IIhardBacktrackingAlgorithm Xfrequency 20.9
- Next Closest TimemediumHash TableStringBacktrackingEnumerationfrequency 20.9
- Non-decreasing ArraymediumArrayfrequency 20.9
- Number of Equivalent Domino PairseasyArrayHash TableCountingfrequency 20.9
- Number of Restricted Paths From First to Last NodemediumDynamic ProgrammingGraph TheoryTopological SortHeap (Priority Queue)+2frequency 20.9
- Number of Stable SubsequenceshardArrayDynamic Programmingfrequency 20.9
- Number of Students Unable to Eat LuncheasyArrayStackQueueSimulationfrequency 20.9
- Paint FencemediumDynamic Programmingfrequency 20.9
- Parallel CoursesmediumGraph TheoryTopological SortDirected Acyclic Graphfrequency 20.9
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.