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
148 questions at Adobe · all time
- Two SumeasyArrayHash Tablefrequency 100.0
- Group AnagramsmediumArrayHash TableStringSortingfrequency 95.1
- Special Binary StringhardStringDivide and ConquerSortingfrequency 95.1
- Longest Substring Without Repeating CharactersmediumHash TableStringSliding Windowfrequency 91.3
- LRU CachemediumHash TableLinked ListDesignDoubly-Linked Listfrequency 89.1
- Add Two NumbersmediumLinked ListMathRecursionfrequency 86.8
- Majority ElementeasyArrayHash TableDivide and ConquerSorting+2frequency 86.8
- Median of Two Sorted ArrayshardArrayBinary SearchDivide and Conquerfrequency 86.8
- Merge IntervalsmediumArraySortingQuicksortfrequency 86.8
- 3SummediumArrayTwo PointersSortingfrequency 84.3
- Climbing StairseasyMathDynamic ProgrammingMemoizationfrequency 84.3
- Reverse Linked ListeasyLinked ListRecursionfrequency 84.3
- Smallest Range IImediumArrayMathGreedySortingfrequency 84.3
- Divide Intervals Into Minimum Number of GroupsmediumArrayTwo PointersGreedySorting+2frequency 81.4
- Number of Increasing Paths in a GridhardArrayDynamic ProgrammingDepth-First SearchBreadth-First Search+4frequency 81.4
- Add DigitseasyMathSimulationNumber Theoryfrequency 78.3
- Best Time to Buy and Sell StockeasyArrayDynamic Programmingfrequency 78.3
- Bitwise OR of Adjacent ElementseasyArrayBit Manipulationfrequency 78.3
- Choose Numbers From Two Arrays in RangehardArrayDynamic Programmingfrequency 78.3
- Count Subarrays Where Max Element Appears at Least K TimesmediumArraySliding Windowfrequency 78.3
- Count Ways to Build Rooms in an Ant ColonyhardArrayMathDynamic ProgrammingTree+6frequency 78.3
- Delete Node in a Linked ListmediumLinked Listfrequency 78.3
- Kth Largest Element in a StreameasyTreeDesignBinary Search TreeHeap (Priority Queue)+2frequency 78.3
- Merge Operations to Turn Array Into a PalindromemediumArrayTwo PointersGreedyfrequency 78.3
- Minimize XORmediumGreedyBit Manipulationfrequency 78.3
- Minimizing Array After Replacing Pairs With Their ProductmediumArrayDynamic ProgrammingGreedyfrequency 78.3
- Minimum Moves to Equal Array Elements IIIeasyArrayMathfrequency 78.3
- Nim GameeasyMathBrainteaserMinimaxGame Theory+2frequency 78.3
- Number of IslandsmediumArrayDepth-First SearchBreadth-First SearchUnion-Find+1frequency 78.3
- Number of Subarrays with Bounded MaximummediumArrayTwo Pointersfrequency 78.3
- Plates Between CandlesmediumArrayStringBinary SearchPrefix Sumfrequency 78.3
- Preimage Size of Factorial Zeroes FunctionhardMathBinary Searchfrequency 78.3
- Reverse Substrings Between Each Pair of ParenthesesmediumStringStackBracket Sequencesfrequency 78.3
- Smallest Range IeasyArrayMathfrequency 78.3
- Tenth LineeasyShellfrequency 78.3
- Threshold Majority QuerieshardArrayHash TableBinary SearchDivide and Conquer+2frequency 78.3
- Integer to RomanmediumHash TableMathStringfrequency 74.7
- Jump GamemediumArrayDynamic ProgrammingGreedyfrequency 74.7
- Minimum Window SubstringhardHash TableStringSliding Windowfrequency 74.7
- Next PermutationmediumArrayTwo Pointersfrequency 74.7
- Validate IP AddressmediumStringfrequency 74.7
- Longest Common PrefixeasyArrayStringTriefrequency 70.6
- Longest Palindromic SubstringmediumTwo PointersStringDynamic ProgrammingManacherfrequency 70.6
- Maximum Product SubarraymediumArrayDynamic Programmingfrequency 70.6
- Sort Array by Increasing FrequencyeasyArrayHash TableSortingfrequency 70.6
- Trapping Rain WaterhardArrayTwo PointersDynamic ProgrammingStack+1frequency 70.6
- Valid ParentheseseasyStringStackBracket Sequencesfrequency 70.6
- Binary Tree Maximum Path SumhardDynamic ProgrammingTreeDepth-First SearchBinary Tree+1frequency 65.7
- Fruit Into BasketsmediumArrayHash TableSliding Windowfrequency 65.7
- Koko Eating BananasmediumArrayBinary Searchfrequency 65.7
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.