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
29 questions at Rippling · all time
- Median of Two Sorted ArrayshardArrayBinary SearchDivide and Conquerfrequency 100.0
- Design SpreadsheetmediumArrayHash TableStringDesign+1frequency 77.8
- Merge k Sorted ListshardLinked ListDivide and ConquerHeap (Priority Queue)Merge Sort+1frequency 73.5
- Design Excel Sum FormulahardArrayHash TableStringGraph Theory+3frequency 70.9
- Merge Two Sorted ListseasyLinked ListRecursionfrequency 64.3
- Count Pairs of Connectable Servers in a Weighted Tree NetworkmediumArrayTreeDepth-First Searchfrequency 59.9
- Evaluate DivisionmediumArrayStringDepth-First SearchBreadth-First Search+5frequency 59.9
- Maximize Amount After Two Days of ConversionsmediumArrayStringDepth-First SearchBreadth-First Search+1frequency 59.9
- Number of Visible People in a QueuehardArrayStackMonotonic Stackfrequency 59.9
- Accounts MergemediumArrayHash TableStringDepth-First Search+3frequency 54.3
- Beautiful ArrangementmediumArrayDynamic ProgrammingBacktrackingBit Manipulation+1frequency 54.3
- Maximum Xor ProductmediumMathGreedyBit Manipulationfrequency 54.3
- Merge IntervalsmediumArraySortingQuicksortfrequency 54.3
- Synonymous SentencesmediumArrayHash TableStringBacktracking+2frequency 54.3
- Top K Frequent ElementsmediumArrayHash TableDivide and ConquerSorting+4frequency 54.3
- Design Ride Sharing SystemmediumHash TableDesignQueueData Streamfrequency 46.4
- Design Underground SystemmediumHash TableStringDesignfrequency 46.4
- Design a Text EditorhardLinked ListStringStackDesign+2frequency 46.4
- Find Median from Data StreamhardTwo PointersDesignSortingHeap (Priority Queue)+1frequency 46.4
- LFU CachehardHash TableLinked ListDesignDoubly-Linked Listfrequency 46.4
- LRU CachemediumHash TableLinked ListDesignDoubly-Linked Listfrequency 46.4
- Longest Substring Of All Vowels in OrdermediumStringSliding Windowfrequency 46.4
- Longest Substring Without Repeating CharactersmediumHash TableStringSliding Windowfrequency 46.4
- Minimum Number of Taps to Open to Water a GardenhardArrayDynamic ProgrammingGreedyfrequency 46.4
- Number of IslandsmediumArrayDepth-First SearchBreadth-First SearchUnion-Find+1frequency 46.4
- Optimal Account BalancinghardArrayDynamic ProgrammingBacktrackingBit Manipulation+1frequency 46.4
- Sentence Similarity IImediumArrayHash TableStringDepth-First Search+2frequency 46.4
- Top K Frequent WordsmediumArrayHash TableStringTrie+4frequency 46.4
- Using a Robot to Print the Lexicographically Smallest StringmediumHash TableStringStackGreedyfrequency 46.4
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.