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
- Find Valid Matrix Given Row and Column SumsmediumArrayGreedyMatrixFlow Networkfrequency 18.0
- Find Words Containing CharactereasyArrayStringfrequency 18.0
- Find the Minimum Number of Fibonacci Numbers Whose Sum Is KmediumMathGreedyfrequency 18.0
- Find the Original Typed String IIhardStringDynamic ProgrammingPrefix Sumfrequency 18.0
- Finding the Number of Visible MountainsmediumArrayStackSortingMonotonic Stackfrequency 18.0
- Fix Names in a TableeasyDatabasefrequency 18.0
- Flatten 2D VectormediumArrayTwo PointersDesignIteratorfrequency 18.0
- Form Largest Integer With Digits That Add up to TargethardArrayDynamic ProgrammingKnapsack ProblemComplete Knapsackfrequency 18.0
- Increment Submatrices by OnemediumArrayMatrixPrefix Sumfrequency 18.0
- K Empty SlotshardArrayBinary Indexed TreeSegment TreeQueue+4frequency 18.0
- Kth Smallest Number in Multiplication TablehardMathBinary Searchfrequency 18.0
- Kth Smallest Subarray SummediumArrayBinary SearchSliding Windowfrequency 18.0
- Last Person to Fit in the BusmediumDatabasefrequency 18.0
- Longest Chunked Palindrome DecompositionhardTwo PointersStringDynamic ProgrammingGreedy+2frequency 18.0
- Longest Continuous Increasing SubsequenceeasyArrayfrequency 18.0
- Longest Line of Consecutive One in MatrixmediumArrayDynamic ProgrammingMatrixfrequency 18.0
- Longest Substring with At Most K Distinct CharactersmediumHash TableStringSliding Windowfrequency 18.0
- Magnetic Force Between Two BallsmediumArrayBinary SearchSortingfrequency 18.0
- Make Number of Distinct Characters EqualmediumHash TableStringCountingfrequency 18.0
- Map of Highest PeakmediumArrayBreadth-First SearchMatrixfrequency 18.0
- Matrix Diagonal SumeasyArrayMatrixfrequency 18.0
- Maximize Alternating Sum Using SwapshardArrayGreedyUnion-FindSortingfrequency 18.0
- Maximum AND Sum of ArrayhardArrayDynamic ProgrammingBit ManipulationBitmaskfrequency 18.0
- Maximum Employees to Be Invited to a MeetinghardArrayDynamic ProgrammingDepth-First SearchGraph Theory+3frequency 18.0
- Maximum Length of Repeated SubarraymediumArrayBinary SearchDynamic ProgrammingSliding Window+2frequency 18.0
- Maximum Length of Semi-Decreasing SubarraysmediumArrayStackSortingMonotonic Stackfrequency 18.0
- Maximum Nesting Depth of the ParentheseseasyStringStackBracket Sequencesfrequency 18.0
- Maximum Number of Events That Can Be Attended IIhardArrayBinary SearchDynamic ProgrammingSortingfrequency 18.0
- Maximum Number of Groups Getting Fresh DonutshardArrayDynamic ProgrammingBit ManipulationMemoization+1frequency 18.0
- Maximum Product of Splitted Binary TreemediumTreeDepth-First SearchBinary Treefrequency 18.0
- Maximum Score from Performing Multiplication OperationshardArrayDynamic Programmingfrequency 18.0
- Maximum Twin Sum of a Linked ListmediumLinked ListTwo PointersStackfrequency 18.0
- Maximum Value of K Coins From PileshardArrayDynamic ProgrammingPrefix Sumfrequency 18.0
- Maximum Value of an Ordered Triplet IImediumArrayPrefix Sumfrequency 18.0
- Merge Similar ItemseasyArrayHash TableSortingOrdered Setfrequency 18.0
- Minimum Absolute Difference Between Elements With ConstraintmediumArrayBinary SearchOrdered Setfrequency 18.0
- Minimum Bitwise OR From GridmediumArrayGreedyBit ManipulationMatrixfrequency 18.0
- Minimum Consecutive Cards to Pick UpmediumArrayHash TableSliding Windowfrequency 18.0
- Minimum Cost to Connect SticksmediumArrayGreedyHeap (Priority Queue)frequency 18.0
- Minimum Cost to Connect Two Groups of PointshardArrayDynamic ProgrammingBit ManipulationMatrix+6frequency 18.0
- Minimum Cost to Hire K WorkershardArrayGreedySortingHeap (Priority Queue)frequency 18.0
- Minimum Cost to Set Cooking TimemediumMathEnumerationfrequency 18.0
- Minimum Deletions to Make String BalancedmediumStringDynamic ProgrammingStackfrequency 18.0
- Minimum Genetic MutationmediumHash TableStringBreadth-First SearchBidirectional Searchfrequency 18.0
- Minimum Limit of Balls in a BagmediumArrayBinary Searchfrequency 18.0
- Minimum Number of Arrows to Burst BalloonsmediumArrayGreedySortingfrequency 18.0
- Minimum Number of Flips to Make Binary Grid Palindromic IImediumArrayTwo PointersMatrixfrequency 18.0
- Minimum Number of Operations to Make Word K-PeriodicmediumHash TableStringCountingfrequency 18.0
- Minimum Number of Pushes to Type Word IeasyMathStringGreedyfrequency 18.0
- Minimum Operations to Convert NumbermediumArrayBreadth-First Searchfrequency 18.0
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.