Oracle
282 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 345. Reverse Vowels of a String | Easy | 49.2% | TopicsTwo PointersString |
| Logger Rate Limiter | Easy | 49.2% | TopicsHash TableDesignData Stream |
| 525. Contiguous Array | Medium | 49.2% | TopicsArrayHash TablePrefix Sum |
| Degree of an Array | Easy | 49.2% | TopicsArrayHash Table |
| 706. Design HashMap | Easy | 49.2% | TopicsArrayHash TableLinked ListDesignHash Function |
| 647. Palindromic Substrings | Medium | 49.2% | TopicsTwo PointersStringDynamic Programming |
| 1669. Merge In Between Linked Lists | Medium | 49.2% | TopicsLinked List |
| 755. Pour Water | Medium | 49.2% | TopicsArraySimulation |
| Diagonal Traverse | Medium | 49.2% | TopicsArrayMatrixSimulation |
| 2. Add Two Numbers | Medium | 45.3% | TopicsLinked ListMathRecursion |
| 17. Letter Combinations of a Phone Number | Medium | 45.3% | TopicsHash TableStringBacktracking |
| First Missing Positive | Hard | 45.3% | TopicsArrayHash Table |
| 55. Jump Game | Medium | 45.3% | TopicsArrayDynamic ProgrammingGreedy |
| 98. Validate Binary Search Tree | Medium | 45.3% | TopicsTreeDepth-First SearchBinary Search TreeBinary Tree |
| 138. Copy List with Random Pointer | Medium | 45.3% | TopicsHash TableLinked List |
| Word Break II | Hard | 45.3% | TopicsArrayHash TableStringDynamic ProgrammingBacktrackingTrieMemoization |
| Search a 2D Matrix II | Medium | 45.3% | TopicsArrayBinary SearchDivide and ConquerMatrix |
| 238. Product of Array Except Self | Medium | 45.3% | TopicsArrayPrefix Sum |
| 283. Move Zeroes | Easy | 45.3% | TopicsArrayTwo Pointers |
| 443. String Compression | Medium | 45.3% | TopicsTwo PointersString |
| 102. Binary Tree Level Order Traversal | Medium | 45.3% | TopicsTreeBreadth-First SearchBinary Tree |
| Design In-Memory File System | Hard | 45.3% | TopicsHash TableStringDesignTrieSorting |
| Number of Distinct Islands | Medium | 45.3% | TopicsArrayHash TableDepth-First SearchBreadth-First SearchUnion-FindSortingMatrixHash Function |
| 1611. Minimum One Bit Operations to Make Integers Zero | Hard | 45.3% | TopicsMathDynamic ProgrammingBit ManipulationRecursionMemoization |
| 695. Max Area of Island | Medium | 45.3% | TopicsArrayDepth-First SearchBreadth-First SearchUnion-FindMatrix |
