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
2,344 questions at Google · all time
- Minimum Adjacent Swaps for K Consecutive OneshardArrayGreedySliding WindowPrefix Sumfrequency 19.5
- Minimum Distance Between BST NodeseasyTreeDepth-First SearchBreadth-First SearchBinary Search Tree+1frequency 19.5
- Minimum Falling Path Sum IIhardArrayDynamic ProgrammingMatrixfrequency 19.5
- Minimum Number of Days to Eat N OrangeshardDynamic ProgrammingMemoizationfrequency 19.5
- Minimum Number of Refueling StopshardArrayDynamic ProgrammingGreedyHeap (Priority Queue)frequency 19.5
- Minimum Time to Repair CarsmediumArrayBinary Searchfrequency 19.5
- Minimum Window SubsequencehardStringDynamic ProgrammingSliding Windowfrequency 19.5
- Most Frequent Number Following Key In an ArrayeasyArrayHash TableCountingfrequency 19.5
- My Calendar IIIhardBinary SearchDesignSegment TreePrefix Sum+1frequency 19.5
- Next Greater Element IIImediumMathTwo PointersStringfrequency 19.5
- Number of BoomerangsmediumArrayHash TableMathfrequency 19.5
- Number of Steps to Reduce a Number to ZeroeasyMathBit Manipulationfrequency 19.5
- Number of Unique Good SubsequenceshardStringDynamic Programmingfrequency 19.5
- Number of Wonderful SubstringsmediumHash TableStringBit ManipulationPrefix Sumfrequency 19.5
- Numbers With Repeated DigitshardMathDynamic Programmingfrequency 19.5
- Output Contest MatchesmediumStringRecursionSimulationfrequency 19.5
- Parsing A Boolean ExpressionhardStringStackRecursionfrequency 19.5
- Partition Array for Maximum SummediumArrayDynamic Programmingfrequency 19.5
- Partition LabelsmediumHash TableTwo PointersStringGreedyfrequency 19.5
- Partition to K Equal Sum SubsetsmediumArrayDynamic ProgrammingBacktrackingBit Manipulation+2frequency 19.5
- Path Sum IImediumBacktrackingTreeDepth-First SearchBinary Treefrequency 19.5
- Pizza With 3n SliceshardArrayDynamic ProgrammingGreedyHeap (Priority Queue)frequency 19.5
- Prime Subtraction OperationmediumArrayMathBinary SearchGreedy+1frequency 19.5
- Product Sales Analysis IeasyDatabasefrequency 19.5
- Profitable SchemeshardArrayDynamic ProgrammingKnapsack Problem0-1 Knapsackfrequency 19.5
- Queries on Number of Points Inside a CirclemediumArrayMathGeometryfrequency 19.5
- Rabbits in ForestmediumArrayHash TableMathGreedyfrequency 19.5
- Range AdditionmediumArrayPrefix Sumfrequency 19.5
- Reaching PointshardMathEuclidean AlgorithmGreatest Common Divisorfrequency 19.5
- Read N Characters Given read4 II - Call Multiple TimeshardArraySimulationInteractivefrequency 19.5
- Rearrange String k Distance AparthardHash TableStringGreedySorting+2frequency 19.5
- Reveal Cards In Increasing OrdermediumArrayQueueSortingSimulationfrequency 19.5
- Reverse Only LetterseasyTwo PointersStringfrequency 19.5
- Root Equals Sum of ChildreneasyTreeBinary Treefrequency 19.5
- Search in a Sorted Array of Unknown SizemediumArrayBinary SearchInteractivefrequency 19.5
- Sentence SimilarityeasyArrayHash TableStringfrequency 19.5
- Shifting Letters IImediumArrayStringPrefix Sumfrequency 19.5
- Shopping OffersmediumArrayDynamic ProgrammingBacktrackingBit Manipulation+4frequency 19.5
- Single-Row KeyboardeasyHash TableStringfrequency 19.5
- Smallest Divisible Digit Product IeasyMathEnumerationfrequency 19.5
- Smallest Good BasehardMathBinary Searchfrequency 19.5
- Split Array into Consecutive SubsequencesmediumArrayHash TableGreedyHeap (Priority Queue)frequency 19.5
- Step-By-Step Directions From a Binary Tree Node to AnothermediumStringTreeDepth-First SearchBinary Tree+2frequency 19.5
- String TransformationhardMathStringDynamic ProgrammingString Matchingfrequency 19.5
- Subdomain Visit CountmediumArrayHash TableStringCountingfrequency 19.5
- Sum of Mutated Array Closest to TargetmediumArrayBinary SearchSortingfrequency 19.5
- Sum of Prefix Scores of StringshardArrayStringTrieCountingfrequency 19.5
- Sum of Subarray RangesmediumArrayStackMonotonic Stackfrequency 19.5
- Super Egg DrophardMathBinary SearchDynamic Programmingfrequency 19.5
- The Maze IImediumArrayDepth-First SearchBreadth-First SearchGraph Theory+6frequency 19.5
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.