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
- Managers with at Least 5 Direct ReportsmediumDatabasefrequency 50.2
- Number of Recent CallseasyDesignQueueData Streamfrequency 50.2
- Populating Next Right Pointers in Each NodemediumLinked ListTreeDepth-First SearchBreadth-First Search+1frequency 50.2
- Subsets IImediumArrayBacktrackingBit Manipulationfrequency 50.2
- Unique Paths IImediumArrayDynamic ProgrammingMatrixfrequency 50.2
- Design Browser HistorymediumArrayLinked ListStackDesign+2frequency 49.4
- Divide Two IntegersmediumMathBit Manipulationfrequency 49.4
- Rotate StringeasyStringString Matchingfrequency 49.4
- Sliding Window MaximumhardArrayQueueSliding WindowHeap (Priority Queue)+2frequency 49.4
- Wildcard MatchinghardStringDynamic ProgrammingGreedyRecursionfrequency 49.4
- Capacity To Ship Packages Within D DaysmediumArrayBinary Searchfrequency 48.6
- Concatenation of ArrayeasyArraySimulationfrequency 48.6
- Find the Winner of the Circular GamemediumArrayMathRecursionQueue+1frequency 48.6
- Kth Smallest Element in a BSTmediumTreeDepth-First SearchBinary Search TreeBinary Treefrequency 48.6
- Lowest Common Ancestor of a Binary TreemediumTreeDepth-First SearchBinary TreeBinary Lifting+1frequency 48.6
- Next Greater Element IImediumArrayStackMonotonic Stackfrequency 48.6
- Partition Equal Subset SummediumArrayDynamic ProgrammingKnapsack Problem0-1 Knapsackfrequency 48.6
- Reverse Nodes in k-GrouphardLinked ListRecursionfrequency 48.6
- Average Time of Process per MachineeasyDatabasefrequency 47.7
- Diameter of Binary TreeeasyTreeDepth-First SearchBinary TreeDP on Treesfrequency 47.7
- Maximum Depth of Binary TreeeasyTreeDepth-First SearchBreadth-First SearchBinary Treefrequency 47.7
- Populating Next Right Pointers in Each Node IImediumLinked ListTreeDepth-First SearchBreadth-First Search+1frequency 47.7
- Second Highest SalarymediumDatabasefrequency 47.7
- Squares of a Sorted ArrayeasyArrayTwo PointersSortingfrequency 47.7
- TrianglemediumArrayDynamic Programmingfrequency 47.7
- Two Sum II - Input Array Is SortedmediumArrayTwo PointersBinary Searchfrequency 47.7
- H-IndexmediumArraySortingCounting Sortfrequency 46.8
- Maximum Average Subarray IeasyArraySliding Windowfrequency 46.8
- Online Stock SpanmediumStackDesignMonotonic StackData Streamfrequency 46.8
- Peak Index in a Mountain ArraymediumArrayBinary SearchTernary Searchfrequency 46.8
- Remove Duplicates from Sorted ListeasyLinked Listfrequency 46.8
- Rising TemperatureeasyDatabasefrequency 46.8
- Sudoku SolverhardArrayHash TableBacktrackingMatrix+2frequency 46.8
- Evaluate Reverse Polish NotationmediumArrayMathStackfrequency 45.8
- Find Missing and Repeated ValueseasyArrayHash TableMathMatrixfrequency 45.8
- Fruit Into BasketsmediumArrayHash TableSliding Windowfrequency 45.8
- Implement Trie (Prefix Tree)mediumHash TableStringDesignTriefrequency 45.8
- Lowest Common Ancestor of a Binary Search TreemediumTreeDepth-First SearchBinary Search TreeBinary Tree+2frequency 45.8
- Max Consecutive Ones IIImediumArrayBinary SearchSliding WindowPrefix Sumfrequency 45.8
- Maximum Nesting Depth of the ParentheseseasyStringStackBracket Sequencesfrequency 45.8
- Minimum Number of Days to Make m BouquetsmediumArrayBinary Searchfrequency 45.8
- Minimum Number of Steps to Make Two Strings AnagrammediumHash TableStringCountingfrequency 45.8
- Reverse Vowels of a StringeasyTwo PointersStringfrequency 45.8
- Students and ExaminationseasyDatabasefrequency 45.8
- Article Views IeasyDatabasefrequency 44.8
- Big CountrieseasyDatabasefrequency 44.8
- Binary Tree Maximum Path SumhardDynamic ProgrammingTreeDepth-First SearchBinary Tree+1frequency 44.8
- Delete Node in a Linked ListmediumLinked Listfrequency 44.8
- Implement Magic DictionarymediumHash TableStringDepth-First SearchDesign+1frequency 44.8
- Intersection of Two Linked ListseasyHash TableLinked ListTwo Pointersfrequency 44.8
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.