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1396 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 896. Monotonic Array | Easy | 36.2% | TopicsArray |
| 904. Fruit Into Baskets | Medium | 36.2% | TopicsArrayHash TableSliding Window |
| 905. Sort Array By Parity | Easy | 36.2% | TopicsArrayTwo PointersSorting |
| Implement Trie (Prefix Tree) | Medium | 35.2% | TopicsHash TableStringDesignTrie |
| Majority Element II | Medium | 35.2% | TopicsArrayHash TableSortingCountingBoyer–Moore Majority Vote Algorithm |
| 230. Kth Smallest Element in a BST | Medium | 35.2% | TopicsTreeDepth-First SearchBinary Search TreeBinary Tree |
| Maximum Size Subarray Sum Equals k | Medium | 35.2% | TopicsArrayHash TablePrefix Sum |
| 383. Ransom Note | Easy | 35.2% | TopicsHash TableStringCounting |
| 402. Remove K Digits | Medium | 35.2% | TopicsStringStackGreedyMonotonic Stack |
| 416. Partition Equal Subset Sum | Medium | 35.2% | TopicsArrayDynamic ProgrammingKnapsack Problem0-1 Knapsack |
| 953. Verifying an Alien Dictionary | Easy | 35.2% | TopicsArrayHash TableString |
| 1123. Lowest Common Ancestor of Deepest Leaves | Medium | 35.2% | TopicsHash TableTreeDepth-First SearchBreadth-First SearchBinary TreeBinary LiftingLowest Common AncestorDP on Trees |
| 1143. Longest Common Subsequence | Medium | 35.2% | TopicsStringDynamic ProgrammingLongest Common Subsequence |
| Lowest Common Ancestor of a Binary Tree II | Medium | 35.2% | TopicsTreeDepth-First SearchBinary TreeBinary LiftingLowest Common Ancestor |
| Average Time of Process per Machine | Easy | 35.2% | TopicsDatabase |
| 72. Edit Distance | Medium | 34.1% | TopicsStringDynamic Programming |
| Flatten Binary Tree to Linked List | Medium | 34.1% | TopicsLinked ListStackTreeDepth-First SearchBinary Tree |
| 134. Gas Station | Medium | 34.1% | TopicsArrayGreedy |
| Candy | Hard | 34.1% | TopicsArrayGreedy |
| Word Break II | Hard | 34.1% | TopicsArrayHash TableStringDynamic ProgrammingBacktrackingTrieMemoization |
| Evaluate Reverse Polish Notation | Medium | 34.1% | TopicsArrayMathStack |
| Intersection of Two Linked Lists | Easy | 34.1% | TopicsHash TableLinked ListTwo Pointers |
| 204. Count Primes | Medium | 34.1% | TopicsArrayMathEnumerationNumber TheoryPrimality TestSieve TheoryPrime Number Sieve |
| Strobogrammatic Number II | Medium | 34.1% | TopicsArrayStringRecursion |
| Big Countries | Easy | 34.1% | TopicsDatabase |
