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1396 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 1752. Check if Array Is Sorted and Rotated | Easy | 38.9% | TopicsArray |
| Shortest Path in a Hidden Grid | Medium | 38.9% | TopicsArrayDepth-First SearchBreadth-First SearchMatrixInteractive |
| 101. Symmetric Tree | Easy | 38% | TopicsTreeDepth-First SearchBreadth-First SearchBinary Tree |
| 103. Binary Tree Zigzag Level Order Traversal | Medium | 38% | TopicsTreeBreadth-First SearchBinary Tree |
| Find Minimum in Rotated Sorted Array | Medium | 38% | TopicsArrayBinary Search |
| 237. Delete Node in a Linked List | Medium | 38% | TopicsLinked List |
| Flatten Nested List Iterator | Medium | 38% | TopicsStackTreeDepth-First SearchDesignQueueIterator |
| 1838. Frequency of the Most Frequent Element | Medium | 38% | TopicsArrayBinary SearchGreedySliding WindowSortingPrefix Sum |
| Unique Binary Search Trees | Medium | 38% | TopicsMathDynamic ProgrammingTreeBinary Search TreeBinary Tree |
| 45. Jump Game II | Medium | 37.1% | TopicsArrayDynamic ProgrammingGreedy |
| 58. Length of Last Word | Easy | 37.1% | TopicsString |
| 104. Maximum Depth of Binary Tree | Easy | 37.1% | TopicsTreeDepth-First SearchBreadth-First SearchBinary Tree |
| Friend Requests II: Who Has the Most Friends | Medium | 37.1% | TopicsDatabase |
| Maximum Sum of 3 Non-Overlapping Subarrays | Hard | 37.1% | TopicsArrayDynamic ProgrammingSliding WindowPrefix Sum |
| 703. Kth Largest Element in a Stream | Easy | 37.1% | TopicsTreeDesignBinary Search TreeHeap (Priority Queue)Binary TreeData Stream |
| 796. Rotate String | Easy | 37.1% | TopicsStringString Matching |
| 1431. Kids With the Greatest Number of Candies | Easy | 37.1% | TopicsArray |
| Cutting Ribbons | Medium | 37.1% | TopicsArrayBinary Search |
| Wildcard Matching | Hard | 36.2% | TopicsStringDynamic ProgrammingGreedyRecursion |
| 57. Insert Interval | Medium | 36.2% | TopicsArray |
| 61. Rotate List | Medium | 36.2% | TopicsLinked ListTwo Pointers |
| Reverse Linked List II | Medium | 36.2% | TopicsLinked List |
| 110. Balanced Binary Tree | Easy | 36.2% | TopicsTreeDepth-First SearchBinary Tree |
| Largest Number | Medium | 36.2% | TopicsArrayStringGreedySorting |
| 784. Letter Case Permutation | Medium | 36.2% | TopicsStringBacktrackingBit Manipulation |
