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
- Divide Array Into Equal PairseasyArrayHash TableBit ManipulationCountingfrequency 17.7
- Domino and Tromino TilingmediumDynamic Programmingfrequency 17.7
- Employees Whose Manager Left the CompanyeasyDatabasefrequency 17.7
- Excel Sheet Column NumbereasyMathStringfrequency 17.7
- Find Bottom Left Tree ValuemediumTreeDepth-First SearchBreadth-First SearchBinary Treefrequency 17.7
- Find Common CharacterseasyArrayHash TableStringfrequency 17.7
- Find Smallest Letter Greater Than TargeteasyArrayBinary Searchfrequency 17.7
- Find Users With Valid E-MailseasyDatabasefrequency 17.7
- Find the Length of the Longest Common PrefixmediumArrayHash TableStringTriefrequency 17.7
- Find the Maximum Length of Valid Subsequence IImediumArrayDynamic Programmingfrequency 17.7
- Find the Minimum Amount of Time to Brew PotionsmediumArraySimulationPrefix Sumfrequency 17.7
- Find the Town JudgeeasyArrayHash TableGraph Theoryfrequency 17.7
- Four DivisorsmediumArrayMathPrime FactorizationSieve Theoryfrequency 17.7
- Game of LifemediumArrayMatrixSimulationfrequency 17.7
- Gray CodemediumMathBacktrackingBit Manipulationfrequency 17.7
- Hamming DistanceeasyBit Manipulationfrequency 17.7
- Hand of StraightsmediumArrayHash TableGreedySortingfrequency 17.7
- Integer BreakmediumMathDynamic Programmingfrequency 17.7
- Integer to English WordshardMathStringRecursionfrequency 17.7
- Jump Game VIImediumStringDynamic ProgrammingSliding WindowPrefix Sumfrequency 17.7
- K-diff Pairs in an ArraymediumArrayHash TableTwo PointersBinary Search+1frequency 17.7
- K-th Symbol in GrammarmediumMathBit ManipulationRecursionfrequency 17.7
- Kth Largest Element in a StreameasyTreeDesignBinary Search TreeHeap (Priority Queue)+2frequency 17.7
- Largest 3-Same-Digit Number in StringeasyStringfrequency 17.7
- Left and Right Sum DifferenceseasyArrayPrefix Sumfrequency 17.7
- Longest Harmonious SubsequenceeasyArrayHash TableSliding WindowSorting+1frequency 17.7
- Longest Increasing Path in a MatrixhardArrayDynamic ProgrammingDepth-First SearchBreadth-First Search+5frequency 17.7
- Longest String ChainmediumArrayHash TableTwo PointersString+2frequency 17.7
- Magic Squares In GridmediumArrayHash TableMathMatrixfrequency 17.7
- Make The String GreateasyStringStackfrequency 17.7
- Max Chunks To Make SortedmediumArrayStackGreedySorting+1frequency 17.7
- Max Sum of a Pair With Equal Sum of DigitsmediumArrayHash TableSortingHeap (Priority Queue)frequency 17.7
- Maximum Absolute Sum of Any SubarraymediumArrayDynamic Programmingfrequency 17.7
- Maximum Building HeighthardArrayMathSortingfrequency 17.7
- Maximum Length of Repeated SubarraymediumArrayBinary SearchDynamic ProgrammingSliding Window+2frequency 17.7
- Maximum Manhattan Distance After K ChangesmediumHash TableMathStringCountingfrequency 17.7
- Maximum Number of Events That Can Be Attended IIhardArrayBinary SearchDynamic ProgrammingSortingfrequency 17.7
- Maximum Population YeareasyArrayCountingPrefix Sumfrequency 17.7
- Maximum Product of Two Elements in an ArrayeasyArraySortingHeap (Priority Queue)frequency 17.7
- Maximum Subarray Sum With Length Divisible by KmediumArrayHash TablePrefix Sumfrequency 17.7
- Maximum Sum Circular SubarraymediumArrayDivide and ConquerDynamic ProgrammingQueue+1frequency 17.7
- Maximum Twin Sum of a Linked ListmediumLinked ListTwo PointersStackfrequency 17.7
- Maximum Value of an Ordered Triplet IImediumArrayPrefix Sumfrequency 17.7
- Minimum Cost to Cut a StickhardArrayDynamic ProgrammingSortingfrequency 17.7
- Minimum Genetic MutationmediumHash TableStringBreadth-First SearchBidirectional Searchfrequency 17.7
- Minimum Height TreesmediumDepth-First SearchBreadth-First SearchGraph TheoryTopological Sortfrequency 17.7
- Minimum Number of Operations to Make Elements in Array DistincteasyArrayHash Tablefrequency 17.7
- Minimum Number of Operations to Move All Balls to Each BoxmediumArrayStringPrefix Sumfrequency 17.7
- Minimum Number of Pushes to Type Word IeasyMathStringGreedyfrequency 17.7
- Minimum Operations to Convert All Elements to ZeromediumArrayHash TableStackGreedy+1frequency 17.7
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.