Oracle
282 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| Maximum Profit From Trading Stocks | Medium | 45.3% | TopicsArrayDynamic Programming |
| 2062. Count Vowel Substrings of a String | Easy | 45.3% | TopicsHash TableString |
| Next Permutation | Medium | 45.3% | TopicsArrayTwo Pointers |
| 1944. Number of Visible People in a Queue | Hard | 45.3% | TopicsArrayStackMonotonic Stack |
| Second Highest Salary | Medium | 45.3% | TopicsDatabase |
| 845. Longest Mountain in Array | Medium | 45.3% | TopicsArrayTwo PointersDynamic ProgrammingEnumeration |
| 829. Consecutive Numbers Sum | Hard | 45.3% | TopicsMathEnumeration |
| Find Leaves of Binary Tree | Medium | 45.3% | TopicsTreeDepth-First SearchBinary TreeDP on Trees |
| 21. Merge Two Sorted Lists | Easy | 40.7% | TopicsLinked ListRecursion |
| Remove Duplicates from Sorted Array | Easy | 40.7% | TopicsArrayTwo Pointers |
| 48. Rotate Image | Medium | 40.7% | TopicsArrayMathMatrix |
| 61. Rotate List | Medium | 40.7% | TopicsLinked ListTwo Pointers |
| 79. Word Search | Medium | 40.7% | TopicsArrayStringBacktrackingDepth-First SearchMatrix |
| 124. Binary Tree Maximum Path Sum | Hard | 40.7% | TopicsDynamic ProgrammingTreeDepth-First SearchBinary TreeDP on Trees |
| Minimum Size Subarray Sum | Medium | 40.7% | TopicsArrayBinary SearchSliding WindowPrefix Sum |
| 9. Palindrome Number | Easy | 40.7% | TopicsMath |
| 237. Delete Node in a Linked List | Medium | 40.7% | TopicsLinked List |
| Meeting Rooms | Easy | 40.7% | TopicsArraySortingQuicksort |
| 300. Longest Increasing Subsequence | Medium | 40.7% | TopicsArrayBinary SearchDynamic ProgrammingLongest Increasing Subsequence |
| 74. Search a 2D Matrix | Medium | 40.7% | TopicsArrayBinary SearchMatrix |
| 2472. Maximum Number of Non-overlapping Palindrome Substrings | Hard | 40.7% | TopicsTwo PointersStringDynamic ProgrammingGreedy |
| 540. Single Element in a Sorted Array | Medium | 40.7% | TopicsArrayBinary Search |
| 560. Subarray Sum Equals K | Medium | 40.7% | TopicsArrayHash TablePrefix Sum |
| 987. Vertical Order Traversal of a Binary Tree | Hard | 40.7% | TopicsHash TableTreeDepth-First SearchBreadth-First SearchSortingBinary Tree |
| 1011. Capacity To Ship Packages Within D Days | Medium | 40.7% | TopicsArrayBinary Search |
