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
264 questions at Goldman Sachs · all time
- Count Palindromic SubsequenceshardStringDynamic Programmingfrequency 43.6
- Design Event ManagermediumArrayHash TableDesignHeap (Priority Queue)+1frequency 43.6
- Determine if Two Events Have ConflicteasyArrayStringfrequency 43.6
- Find All Good IndicesmediumArrayDynamic ProgrammingPrefix Sumfrequency 43.6
- Keep Multiplying Found Values by TwoeasyArrayHash TableSortingSimulationfrequency 43.6
- Longest Palindromic SubstringmediumTwo PointersStringDynamic ProgrammingManacherfrequency 43.6
- Maximize Palindrome Length From SubsequenceshardStringDynamic Programmingfrequency 43.6
- Minimum Falling Path SummediumArrayDynamic ProgrammingMatrixfrequency 43.6
- Minimum Number of Chairs in a Waiting RoomeasyStringSimulationfrequency 43.6
- Number of Perfect PairsmediumArrayMathTwo PointersSortingfrequency 43.6
- Palindromic SubstringsmediumTwo PointersStringDynamic Programmingfrequency 43.6
- Perform String ShiftseasyArrayMathStringfrequency 43.6
- Print Zero Even OddmediumConcurrencyfrequency 43.6
- Product of Array Except SelfmediumArrayPrefix Sumfrequency 43.6
- Shortest Subarray with Sum at Least KhardArrayBinary SearchQueueSliding Window+3frequency 43.6
- Sort the Jumbled NumbersmediumArraySortingfrequency 43.6
- Successful Pairs of Spells and PotionsmediumArrayTwo PointersBinary SearchSortingfrequency 43.6
- 3SummediumArrayTwo PointersSortingfrequency 41.3
- Binary Tree CamerashardDynamic ProgrammingTreeDepth-First SearchBinary Tree+1frequency 41.3
- Check if the Sentence Is PangrameasyHash TableStringfrequency 41.3
- Jump GamemediumArrayDynamic ProgrammingGreedyfrequency 41.3
- Longest Repeating Character ReplacementmediumHash TableStringSliding Windowfrequency 41.3
- N-QueenshardArrayBacktrackingAlgorithm Xfrequency 41.3
- Search a 2D MatrixmediumArrayBinary SearchMatrixfrequency 41.3
- Sqrt(x)easyMathBinary SearchNewton's Methodfrequency 41.3
- Valid ParentheseseasyStringStackBracket Sequencesfrequency 41.3
- Asteroid CollisionmediumArrayStackSimulationfrequency 38.7
- Binary Tree Maximum Path SumhardDynamic ProgrammingTreeDepth-First SearchBinary Tree+1frequency 38.7
- Capacity To Ship Packages Within D DaysmediumArrayBinary Searchfrequency 38.7
- Consecutive CharacterseasyStringfrequency 38.7
- Daily TemperaturesmediumArrayStackMonotonic Stackfrequency 38.7
- Gas StationmediumArrayGreedyfrequency 38.7
- Generate ParenthesesmediumStringDynamic ProgrammingBacktrackingBracket Sequencesfrequency 38.7
- House RobbermediumArrayDynamic Programmingfrequency 38.7
- Longest Consecutive SequencemediumArrayHash TableUnion-Findfrequency 38.7
- Open the LockmediumArrayHash TableStringBreadth-First Search+1frequency 38.7
- Rotting OrangesmediumArrayBreadth-First SearchMatrixfrequency 38.7
- String to Integer (atoi)mediumStringfrequency 38.7
- Subarray Sum Equals KmediumArrayHash TablePrefix Sumfrequency 38.7
- The Skyline ProblemhardArrayDivide and ConquerBinary Indexed TreeSegment Tree+4frequency 38.7
- Unique PathsmediumMathDynamic ProgrammingCombinatoricsfrequency 38.7
- CandyhardArrayGreedyfrequency 35.5
- Circular Array LoopmediumArrayHash TableTwo PointersFloyd's Cycle Finding Algorithmfrequency 35.5
- Count Paths That Can Form a Palindrome in a TreehardHash TableBit ManipulationTreeDepth-First Searchfrequency 35.5
- Course Schedule IImediumDepth-First SearchBreadth-First SearchGraph TheoryTopological Sortfrequency 35.5
- Domino and Tromino TilingmediumDynamic Programmingfrequency 35.5
- Find Median from Data StreamhardTwo PointersDesignSortingHeap (Priority Queue)+1frequency 35.5
- Find Peak ElementmediumArrayBinary Searchfrequency 35.5
- Koko Eating BananasmediumArrayBinary Searchfrequency 35.5
- Maximal RectanglehardArrayDynamic ProgrammingStackMatrix+1frequency 35.5
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.