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
- Maximum Product SubarraymediumArrayDynamic Programmingfrequency 26.9
- Maximum Size Subarray Sum Equals kmediumArrayHash TablePrefix Sumfrequency 26.9
- Merge k Sorted ListshardLinked ListDivide and ConquerHeap (Priority Queue)Merge Sort+1frequency 26.9
- Minimum Increment to Make Array UniquemediumArrayGreedySortingCountingfrequency 26.9
- Minimum Number of Arrows to Burst BalloonsmediumArrayGreedySortingfrequency 26.9
- Minimum Number of Moves to Make PalindromehardTwo PointersStringGreedyBinary Indexed Treefrequency 26.9
- Next PermutationmediumArrayTwo Pointersfrequency 26.9
- Palindrome PairshardArrayHash TableStringTrie+1frequency 26.9
- Partition Equal Subset SummediumArrayDynamic ProgrammingKnapsack Problem0-1 Knapsackfrequency 26.9
- Path SumeasyTreeDepth-First SearchBreadth-First SearchBinary Treefrequency 26.9
- Power of ThreeeasyMathRecursionfrequency 26.9
- Reverse StringeasyTwo PointersStringfrequency 26.9
- Roman to IntegereasyHash TableMathStringfrequency 26.9
- Shortest Subarray to be Removed to Make Array SortedmediumArrayTwo PointersBinary SearchStack+1frequency 26.9
- Snakes and LaddersmediumArrayBreadth-First SearchMatrixfrequency 26.9
- Sort ColorsmediumArrayTwo PointersSortingQuicksort+1frequency 26.9
- Spiral Matrix IImediumArrayMatrixSimulationfrequency 26.9
- Sudoku SolverhardArrayHash TableBacktrackingMatrix+2frequency 26.9
- Valid Parenthesis StringmediumStringDynamic ProgrammingStackGreedy+1frequency 26.9
- Valid SudokumediumArrayHash TableMatrixfrequency 26.9
- Word SearchmediumArrayStringBacktrackingDepth-First Search+1frequency 26.9
- Accounts MergemediumArrayHash TableStringDepth-First Search+3frequency 20.4
- Amount of Time for Binary Tree to Be InfectedmediumHash TableTreeDepth-First SearchBreadth-First Search+1frequency 20.4
- Binary Tree Zigzag Level Order TraversalmediumTreeBreadth-First SearchBinary Treefrequency 20.4
- Burst BalloonshardArrayDynamic Programmingfrequency 20.4
- Car FleetmediumArrayStackSortingMonotonic Stackfrequency 20.4
- Cherry PickuphardArrayDynamic ProgrammingMatrixfrequency 20.4
- Count Number of TeamsmediumArrayDynamic ProgrammingBinary Indexed TreeSegment Treefrequency 20.4
- Count Square Submatrices with All OnesmediumArrayDynamic ProgrammingMatrixfrequency 20.4
- Count of IntegershardMathStringDynamic Programmingfrequency 20.4
- Course SchedulemediumDepth-First SearchBreadth-First SearchGraph TheoryTopological Sort+1frequency 20.4
- Delete the Middle Node of a Linked ListmediumLinked ListTwo Pointersfrequency 20.4
- Design Browser HistorymediumArrayLinked ListStackDesign+2frequency 20.4
- Design Circular QueuemediumArrayLinked ListDesignQueuefrequency 20.4
- Design Underground SystemmediumHash TableStringDesignfrequency 20.4
- Diameter of N-Ary TreemediumTreeDepth-First SearchDP on Treesfrequency 20.4
- Evaluate DivisionmediumArrayStringDepth-First SearchBreadth-First Search+5frequency 20.4
- Evaluate Reverse Polish NotationmediumArrayMathStackfrequency 20.4
- Excel Sheet Column NumbereasyMathStringfrequency 20.4
- Find Minimum in Rotated Sorted Array IIhardArrayBinary Searchfrequency 20.4
- Find Original Array From Doubled ArraymediumArrayHash TableGreedySortingfrequency 20.4
- Find Pivot IndexeasyArrayPrefix Sumfrequency 20.4
- Find Shortest Path with K HopshardGraph TheoryHeap (Priority Queue)Shortest Pathfrequency 20.4
- Find the Closest PalindromehardMathStringfrequency 20.4
- Find the Longest Substring Containing Vowels in Even CountsmediumHash TableStringBit ManipulationPrefix Sumfrequency 20.4
- Find the Winner of an Array GamemediumArraySimulationfrequency 20.4
- Fizz BuzzeasyMathStringSimulationfrequency 20.4
- Integer to RomanmediumHash TableMathStringfrequency 20.4
- Is SubsequenceeasyTwo PointersStringDynamic Programmingfrequency 20.4
- K Closest Points to OriginmediumArrayMathDivide and ConquerGeometry+4frequency 20.4
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.