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
1,223 questions at Bloomberg · all time
- Count Mentions Per UsermediumArrayMathSortingSimulationfrequency 8.2
- Count Number of Bad PairsmediumArrayHash TableMathCountingfrequency 8.2
- Count Number of Maximum Bitwise-OR SubsetsmediumArrayBacktrackingBit ManipulationEnumerationfrequency 8.2
- Count Number of Trapezoids ImediumArrayHash TableMathGeometryfrequency 8.2
- Count Numbers with Unique DigitsmediumMathDynamic ProgrammingBacktrackingfrequency 8.2
- Count Pairs Whose Sum is Less than TargeteasyArrayTwo PointersBinary SearchSortingfrequency 8.2
- Count Partitions with Even Sum DifferenceeasyArrayMathPrefix Sumfrequency 8.2
- Count Square Submatrices with All OnesmediumArrayDynamic ProgrammingMatrixfrequency 8.2
- Count Square Sum TripleseasyMathEnumerationfrequency 8.2
- Count Subarrays With Majority Element ImediumArrayHash TableDivide and ConquerSegment Tree+3frequency 8.2
- Count Unguarded Cells in the GridmediumArrayMatrixSimulationfrequency 8.2
- Count Ways To Build Good StringsmediumDynamic Programmingfrequency 8.2
- Count of Interesting SubarraysmediumArrayHash TablePrefix Sumfrequency 8.2
- Count the Number of InversionshardArrayDynamic Programmingfrequency 8.2
- Count the Number of Substrings With Dominant OnesmediumStringEnumerationfrequency 8.2
- Create Target Array in the Given OrdereasyArraySimulationfrequency 8.2
- Daily Leads and PartnerseasyDatabasefrequency 8.2
- Decoded String at IndexmediumStringStackfrequency 8.2
- Decrypt String from Alphabet to Integer MappingeasyStringfrequency 8.2
- Delete Columns to Make Sorted IImediumArrayStringGreedyfrequency 8.2
- Delete Duplicate Folders in SystemhardArrayHash TableStringDepth-First Search+3frequency 8.2
- Design Bounded Blocking QueuemediumConcurrencyfrequency 8.2
- Design Snake GamemediumArrayHash TableDesignQueue+1frequency 8.2
- Design SpreadsheetmediumArrayHash TableStringDesign+1frequency 8.2
- Design Tic-Tac-ToemediumArrayHash TableDesignMatrix+1frequency 8.2
- Detect SquaresmediumArrayHash TableDesignCounting+1frequency 8.2
- Difference Between Element Sum and Digit Sum of an ArrayeasyArrayMathfrequency 8.2
- Distribute Coins in Binary TreemediumTreeDepth-First SearchBinary TreeDP on Treesfrequency 8.2
- Divide Intervals Into Minimum Number of GroupsmediumArrayTwo PointersGreedySorting+2frequency 8.2
- Dota2 SenatemediumStringGreedyQueuefrequency 8.2
- Employee Free TimehardArraySweep LineSortingHeap (Priority Queue)frequency 8.2
- Employee ImportancemediumArrayHash TableTreeDepth-First Search+1frequency 8.2
- Equal Row and Column PairsmediumArrayHash TableMatrixSimulationfrequency 8.2
- Equal Sum Grid Partition ImediumArrayMatrixEnumerationPrefix Sumfrequency 8.2
- Fancy SequencehardMathDesignSegment TreeNumber Theory+1frequency 8.2
- Final Array State After K Multiplication Operations IeasyArrayMathHeap (Priority Queue)Simulationfrequency 8.2
- Find All Possible Recipes from Given SuppliesmediumArrayHash TableStringGraph Theory+2frequency 8.2
- Find And Replace in StringmediumArrayHash TableStringSortingfrequency 8.2
- Find Beautiful Indices in the Given Array ImediumTwo PointersStringBinary SearchRolling Hash+5frequency 8.2
- Find Closest Node to Given Two NodesmediumDepth-First SearchGraph Theoryfrequency 8.2
- Find Closest PersoneasyMathfrequency 8.2
- Find Followers CounteasyDatabasefrequency 8.2
- Find Maximum Number of Non Intersecting SubstringsmediumHash TableStringDynamic ProgrammingGreedyfrequency 8.2
- Find Minimum Cost to Remove Array ElementsmediumArrayDynamic Programmingfrequency 8.2
- Find Minimum Operations to Make All Elements Divisible by ThreeeasyArrayMathfrequency 8.2
- Find Mode in Binary Search TreeeasyTreeDepth-First SearchBinary Search TreeBinary Treefrequency 8.2
- Find Resultant Array After Removing AnagramseasyArrayHash TableStringSortingfrequency 8.2
- Find Right IntervalmediumArrayBinary SearchSortingfrequency 8.2
- Find Subarrays With Equal SumeasyArrayHash Tablefrequency 8.2
- Find Unique Binary StringmediumArrayHash TableStringBacktrackingfrequency 8.2
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.