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
33 questions at DocuSign · all time
- Count Non Decreasing Arrays With Given Digit SumshardArrayDynamic ProgrammingPrefix Sumfrequency 100.0
- Design Authentication ManagermediumHash TableLinked ListDesignDoubly-Linked Listfrequency 96.5
- Implement Trie (Prefix Tree)mediumHash TableStringDesignTriefrequency 92.4
- Find Maximum Area of a TrianglemediumArrayHash TableMathGreedy+2frequency 87.6
- LRU CachemediumHash TableLinked ListDesignDoubly-Linked Listfrequency 87.6
- Insert Delete GetRandom O(1)mediumArrayHash TableMathDesign+1frequency 81.7
- Longest Substring Without Repeating CharactersmediumHash TableStringSliding Windowfrequency 81.7
- Search Suggestions SystemmediumArrayStringBinary SearchTrie+2frequency 81.7
- Find Median from Data StreamhardTwo PointersDesignSortingHeap (Priority Queue)+1frequency 74.1
- Group AnagramsmediumArrayHash TableStringSortingfrequency 74.1
- Integer to RomanmediumHash TableMathStringfrequency 74.1
- Logger Rate LimitereasyHash TableDesignData Streamfrequency 74.1
- Meeting Rooms IImediumArrayTwo PointersGreedySorting+2frequency 74.1
- Merge IntervalsmediumArraySortingQuicksortfrequency 74.1
- Number of IslandsmediumArrayDepth-First SearchBreadth-First SearchUnion-Find+1frequency 74.1
- Task SchedulermediumArrayHash TableGreedySorting+2frequency 74.1
- Top K Frequent ElementsmediumArrayHash TableDivide and ConquerSorting+4frequency 74.1
- Accounts MergemediumArrayHash TableStringDepth-First Search+3frequency 63.5
- Excel Sheet Column NumbereasyMathStringfrequency 63.5
- Find All Possible Recipes from Given SuppliesmediumArrayHash TableStringGraph Theory+2frequency 63.5
- Find Peak ElementmediumArrayBinary Searchfrequency 63.5
- House Robber IImediumArrayDynamic Programmingfrequency 63.5
- House Robber IIImediumDynamic ProgrammingTreeDepth-First SearchBinary Tree+1frequency 63.5
- Inorder Successor in BSTmediumTreeDepth-First SearchBinary Search TreeBinary Treefrequency 63.5
- Longest Repeating Character ReplacementmediumHash TableStringSliding Windowfrequency 63.5
- Maximum Profit in Job SchedulinghardArrayBinary SearchDynamic ProgrammingSortingfrequency 63.5
- Merge Two Sorted ListseasyLinked ListRecursionfrequency 63.5
- Minimum Cost to Make at Least One Valid Path in a GridhardArrayBreadth-First SearchGraph TheoryHeap (Priority Queue)+4frequency 63.5
- Number of AtomshardHash TableStringStackSortingfrequency 63.5
- Shortest BridgemediumArrayDepth-First SearchBreadth-First SearchMatrixfrequency 63.5
- Spiral Matrix IVmediumArrayLinked ListMatrixSimulationfrequency 63.5
- Trapping Rain WaterhardArrayTwo PointersDynamic ProgrammingStack+1frequency 63.5
- Word LadderhardHash TableStringBreadth-First SearchBidirectional Searchfrequency 63.5
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.