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
- Longest Word in Dictionary through DeletingmediumArrayTwo PointersStringSortingfrequency 22.1
- Max Sum of Rectangle No Larger Than KhardArrayBinary SearchMatrixPrefix Sum+1frequency 22.1
- Maximum Erasure ValuemediumArrayHash TableSliding Windowfrequency 22.1
- Maximum XOR With an Element From ArrayhardArrayBit ManipulationTriefrequency 22.1
- Minimum Distance to Type a Word Using Two FingershardStringDynamic Programmingfrequency 22.1
- Minimum Number of Vertices to Reach All NodesmediumGraph TheoryDirected Acyclic Graphfrequency 22.1
- Not Boring MovieseasyDatabasefrequency 22.1
- Number of AtomshardHash TableStringStackSortingfrequency 22.1
- Number of Connected Components in an Undirected GraphmediumDepth-First SearchBreadth-First SearchUnion-FindGraph Theoryfrequency 22.1
- Number of Good PathshardArrayHash TableTreeUnion-Find+2frequency 22.1
- Number of Good Ways to Split a StringmediumHash TableStringDynamic ProgrammingBit Manipulation+1frequency 22.1
- Number of Ways of Cutting a PizzahardArrayDynamic ProgrammingMemoizationMatrix+1frequency 22.1
- Number of Zero-Filled SubarraysmediumArrayMathfrequency 22.1
- Online ElectionmediumArrayHash TableBinary SearchDesignfrequency 22.1
- Path with Maximum GoldmediumArrayBacktrackingMatrixfrequency 22.1
- Print in OrdereasyConcurrencyfrequency 22.1
- Rank Transform of a MatrixhardArrayUnion-FindGraph TheoryTopological Sort+2frequency 22.1
- Remove IntervalmediumArrayfrequency 22.1
- Repeated DNA SequencesmediumHash TableStringBit ManipulationSliding Window+4frequency 22.1
- Search Suggestions SystemmediumArrayStringBinary SearchTrie+2frequency 22.1
- Self Dividing NumberseasyMathfrequency 22.1
- Sentence Similarity IIImediumArrayTwo PointersStringfrequency 22.1
- Shortest Path to Get All KeyshardArrayBit ManipulationBreadth-First SearchMatrixfrequency 22.1
- Similar String GroupshardArrayHash TableStringDepth-First Search+2frequency 22.1
- Solving Questions With BrainpowermediumArrayDynamic Programmingfrequency 22.1
- Special Array With X Elements Greater Than or Equal XeasyArrayBinary SearchSortingfrequency 22.1
- Split a String Into the Max Number of Unique SubstringsmediumHash TableStringBacktrackingfrequency 22.1
- Stream of CharactershardArrayStringDesignTrie+2frequency 22.1
- Student Attendance Record IeasyStringfrequency 22.1
- The MazemediumArrayDepth-First SearchBreadth-First SearchMatrixfrequency 22.1
- UTF-8 ValidationmediumArrayBit Manipulationfrequency 22.1
- Wiggle SortmediumArrayGreedySortingfrequency 22.1
- 3Sum SmallermediumArrayTwo PointersBinary SearchSortingfrequency 20.9
- All Possible Full Binary TreesmediumDynamic ProgrammingTreeRecursionMemoization+1frequency 20.9
- Alternating Groups IImediumArraySliding Windowfrequency 20.9
- Avoid Flood in The CitymediumArrayHash TableBinary SearchGreedy+1frequency 20.9
- Basic Calculator IIIhardMathStringStackRecursionfrequency 20.9
- Best Time to Buy and Sell Stock with Transaction FeemediumArrayDynamic ProgrammingGreedyfrequency 20.9
- Binary Tree Longest Consecutive SequencemediumTreeDepth-First SearchBinary TreeDP on Treesfrequency 20.9
- Binary Tree Postorder TraversaleasyStackTreeDepth-First SearchBinary Treefrequency 20.9
- Build a Matrix With ConditionshardArrayGraph TheoryTopological SortMatrix+1frequency 20.9
- Campus BikesmediumArraySortingHeap (Priority Queue)frequency 20.9
- Car Fleet IIhardArrayMathStackHeap (Priority Queue)+1frequency 20.9
- Cat and Mouse IIhardArrayMathDynamic ProgrammingGraph Theory+6frequency 20.9
- Closest Nodes Queries in a Binary Search TreemediumArrayBinary SearchTreeDepth-First Search+2frequency 20.9
- Convert Binary Number in a Linked List to IntegereasyLinked ListMathfrequency 20.9
- Count Negative Numbers in a Sorted MatrixeasyArrayBinary SearchMatrixfrequency 20.9
- Count Subarrays With Score Less Than KhardArrayBinary SearchSliding WindowPrefix Sumfrequency 20.9
- DI String MatcheasyArrayTwo PointersStringGreedyfrequency 20.9
- Decompress Run-Length Encoded ListeasyArrayfrequency 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.