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
- Find Lucky Integer in an ArrayeasyArrayHash TableCountingfrequency 13.4
- Find Minimum Time to Reach Last Room ImediumArrayGraph TheoryHeap (Priority Queue)Matrix+1frequency 13.4
- Find Missing ElementseasyArrayHash TableSortingfrequency 13.4
- Find Score of an Array After Marking All ElementsmediumArrayHash TableSortingHeap (Priority Queue)+1frequency 13.4
- Find Words That Can Be Formed by CharacterseasyArrayHash TableStringCountingfrequency 13.4
- Find X-Sum of All K-Long Subarrays IeasyArrayHash TableSliding WindowHeap (Priority Queue)frequency 13.4
- Find a Safe Walk Through a GridmediumArrayBreadth-First SearchGraph TheoryHeap (Priority Queue)+2frequency 13.4
- Find the Distance Value Between Two ArrayseasyArrayTwo PointersBinary SearchSortingfrequency 13.4
- Find the K-th Character in String Game IIhardMathBit ManipulationRecursionfrequency 13.4
- Find the Largest Area of Square Inside Two RectanglesmediumArrayMathGeometryfrequency 13.4
- Find the Longest Substring Containing Vowels in Even CountsmediumHash TableStringBit ManipulationPrefix Sumfrequency 13.4
- Find the Maximum Number of Elements in SubsetmediumArrayHash TableEnumerationfrequency 13.4
- Find the Maximum Number of Fruits CollectedhardArrayDynamic ProgrammingMatrixfrequency 13.4
- Find the Middle Index in ArrayeasyArrayPrefix Sumfrequency 13.4
- Find the Number of Distinct Colors Among the BallsmediumArrayHash TableSimulationfrequency 13.4
- Find the Number of Subsequences With Equal GCDhardArrayMathDynamic ProgrammingNumber Theory+2frequency 13.4
- Find the Original Typed String IeasyStringfrequency 13.4
- Find the Power of K-Size Subarrays ImediumArraySliding Windowfrequency 13.4
- Find the Prefix Common Array of Two ArraysmediumArrayHash TableBit Manipulationfrequency 13.4
- Finding Pairs With a Certain SummediumArrayHash TableDesignfrequency 13.4
- Fix Names in a TableeasyDatabasefrequency 13.4
- Flipping an ImageeasyArrayTwo PointersBit ManipulationMatrix+1frequency 13.4
- Frog JumphardArrayDynamic Programmingfrequency 13.4
- Fruits Into Baskets IIImediumArrayBinary SearchSegment TreeOrdered Setfrequency 13.4
- Furthest Building You Can ReachmediumArrayGreedyHeap (Priority Queue)frequency 13.4
- Game Play Analysis IeasyDatabasefrequency 13.4
- Get Equal Substrings Within BudgetmediumStringBinary SearchSliding WindowPrefix Sumfrequency 13.4
- Guess Number Higher or Lower IImediumMathDynamic ProgrammingMinimaxGame Theoryfrequency 13.4
- Height CheckereasyArraySortingCounting SortBubble Sortfrequency 13.4
- House Robber IIImediumDynamic ProgrammingTreeDepth-First SearchBinary Tree+1frequency 13.4
- Insert into a Binary Search TreemediumTreeBinary Search TreeBinary Treefrequency 13.4
- Interval List IntersectionsmediumArrayTwo PointersSweep Linefrequency 13.4
- Is Graph Bipartite?mediumDepth-First SearchBreadth-First SearchUnion-FindGraph Theory+2frequency 13.4
- Knight DialermediumDynamic Programmingfrequency 13.4
- Kth Largest Sum in a Binary TreemediumTreeBreadth-First SearchSortingBinary Treefrequency 13.4
- Kth Smallest Element in a Sorted MatrixmediumArrayBinary SearchSortingHeap (Priority Queue)+1frequency 13.4
- LFU CachehardHash TableLinked ListDesignDoubly-Linked Listfrequency 13.4
- Largest Perimeter TriangleeasyArrayMathGreedySorting+2frequency 13.4
- Largest Submatrix With RearrangementsmediumArrayGreedySortingMatrixfrequency 13.4
- Length of Longest Fibonacci SubsequencemediumArrayHash TableDynamic Programmingfrequency 13.4
- Long Pressed NameeasyTwo PointersStringfrequency 13.4
- Longest Balanced Substring ImediumHash TableStringCountingEnumerationfrequency 13.4
- Longest Balanced Substring IImediumHash TableStringPrefix Sumfrequency 13.4
- Longest Continuous Increasing SubsequenceeasyArrayfrequency 13.4
- Longest Happy StringmediumStringGreedyHeap (Priority Queue)frequency 13.4
- Longest Nice SubstringeasyHash TableStringDivide and ConquerBit Manipulation+1frequency 13.4
- Longest Palindrome by Concatenating Two Letter WordsmediumArrayHash TableStringGreedy+1frequency 13.4
- Longest Subarray With Maximum Bitwise ANDmediumArrayBit ManipulationBrainteaserfrequency 13.4
- Longest Subarray of 1's After Deleting One ElementmediumArrayDynamic ProgrammingSliding Windowfrequency 13.4
- Longest Substring with At Least K Repeating CharactersmediumHash TableStringDivide and ConquerSliding Windowfrequency 13.4
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.