Total Questions
100
Medium problems make up 60.00 % of what Oracle asks, so that is the tier to prioritise.
Easy2525.00 %
Medium6060.00 %
Hard1515.00 %
Questions
Sort100 shown
- LRU CacheMediumfreq 100
- Two SumEasyfreq 92
- Number of IslandsMediumfreq 90
- Merge IntervalsMediumfreq 89
- Longest Substring Without Repeating CharactersMediumfreq 85
- Longest Palindromic SubstringMediumfreq 81
- Group AnagramsMediumfreq 80
- Container With Most WaterMediumfreq 74
- Trapping Rain WaterHardfreq 74
- Search in Rotated Sorted ArrayMediumfreq 70
- Add Two NumbersMediumfreq 70
- Longest Consecutive SequenceMediumfreq 70
- Spiral MatrixMediumfreq 69
- Binary Tree Right Side ViewMediumfreq 67
- Jump GameMediumfreq 67
- 3SumMediumfreq 67
- Merge k Sorted ListsHardfreq 67
- Reverse Linked ListEasyfreq 64
- Best Time to Buy and Sell StockEasyfreq 64
- Pow(x, n)Mediumfreq 64
- Merge Two Sorted ListsEasyfreq 64
- Maximum SubarrayMediumfreq 62
- Gas StationMediumfreq 62
- Word SearchMediumfreq 62
- Linked List CycleEasyfreq 62
- Jump Game IIMediumfreq 62
- Course Schedule IIMediumfreq 62
- Roman to IntegerEasyfreq 62
- Combination SumMediumfreq 59
- Kth Largest Element in an ArrayMediumfreq 59
- Set Matrix ZeroesMediumfreq 56
- Course ScheduleMediumfreq 56
- Validate Binary Search TreeMediumfreq 56
- Binary Tree Maximum Path SumHardfreq 56
- Rotate ImageMediumfreq 56
- Binary Tree Zigzag Level Order TraversalMediumfreq 56
- Decode WaysMediumfreq 56
- First Missing PositiveHardfreq 56
- Integer to RomanMediumfreq 56
- Copy List with Random PointerMediumfreq 56
- Sort ColorsMediumfreq 56
- Longest Common PrefixEasyfreq 53
- Min StackMediumfreq 53
- Median of Two Sorted ArraysHardfreq 53
- Isomorphic StringsEasyfreq 48
- Rotate ArrayMediumfreq 48
- Longest Valid ParenthesesHardfreq 48
- Minimum Size Subarray SumMediumfreq 48
- Zigzag ConversionMediumfreq 48
- Kth Smallest Element in a BSTMediumfreq 48
- Generate ParenthesesMediumfreq 48
- PermutationsMediumfreq 48
- Combination Sum IIMediumfreq 48
- Restore IP AddressesMediumfreq 48
- Max Points on a LineHardfreq 43
- Excel Sheet Column TitleEasyfreq 43
- Majority ElementEasyfreq 43
- Populating Next Right Pointers in Each NodeMediumfreq 43
- Rotate ListMediumfreq 43
- Merge Sorted ArrayEasyfreq 43
- Unique PathsMediumfreq 43
- Insert IntervalMediumfreq 43
- Maximal SquareMediumfreq 43
- Remove Duplicates from Sorted ArrayEasyfreq 43
- Letter Combinations of a Phone NumberMediumfreq 43
- Largest NumberMediumfreq 37
- Basic CalculatorHardfreq 37
- Implement Stack using QueuesEasyfreq 37
- Two Sum II - Input Array Is SortedMediumfreq 37
- Find Peak ElementMediumfreq 37
- Palindrome NumberEasyfreq 37
- Implement Queue using StacksEasyfreq 37
- Word Break IIHardfreq 37
- Valid SudokuMediumfreq 37
- Recover Binary Search TreeMediumfreq 37
- Sudoku SolverHardfreq 37
- Text JustificationHardfreq 37
- Remove Duplicates from Sorted ListEasyfreq 37
- Minimum Window SubstringHardfreq 37
- Maximum Product SubarrayMediumfreq 28
- Climbing StairsEasyfreq 28
- Regular Expression MatchingHardfreq 28
- 4SumMediumfreq 28
- Invert Binary TreeEasyfreq 28
- Divide Two IntegersMediumfreq 28
- Number of Unique Good SubsequencesHardfreq 28
- Search in Rotated Sorted Array IIMediumfreq 28
- Intersection of Two Linked ListsEasyfreq 28
- Reverse Linked List IIMediumfreq 28
- Delete Duplicate EmailsEasyfreq 28
- Word FrequencyMediumfreq 28
- Employees Earning More Than Their ManagersEasyfreq 28
- Maximum Depth of Binary TreeEasyfreq 28
- Path Sum IIMediumfreq 28
- Pascal's TriangleEasyfreq 28
- Sort ListMediumfreq 28
- Maximal RectangleHardfreq 28
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