2324 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 2559. Count Vowel Strings in Ranges | Medium | 5% | TopicsArrayStringPrefix Sum |
| Generate Fibonacci Sequence | Easy | 5% | Topics— |
| 3398. Smallest Substring With Identical Characters I | Hard | 5% | TopicsArrayBinary SearchEnumeration |
| 1668. Maximum Repeating Substring | Easy | 5% | TopicsStringDynamic ProgrammingString Matching |
| 2578. Split With Minimum Sum | Easy | 5% | TopicsMathGreedySorting |
| 3185. Count Pairs That Form a Complete Day II | Medium | 5% | TopicsArrayHash TableCounting |
| 2731. Movement of Robots | Medium | 5% | TopicsArrayBrainteaserSortingPrefix Sum |
| 749. Contain Virus | Hard | 5% | TopicsArrayDepth-First SearchBreadth-First SearchMatrixSimulation |
| 2575. Find the Divisibility Array of a String | Medium | 5% | TopicsArrayMathString |
| 3489. Zero Array Transformation IV | Medium | 5% | TopicsArrayDynamic Programming |
| 924. Minimize Malware Spread | Hard | 5% | TopicsArrayHash TableDepth-First SearchBreadth-First SearchUnion-FindGraph Theory |
| 1762. Buildings With an Ocean View | Medium | 5% | TopicsArrayStackMonotonic Stack |
| 3424. Minimum Cost to Make Arrays Identical | Medium | 5% | TopicsArrayGreedySorting |
| 3392. Count Subarrays of Length Three With a Condition | Easy | 5% | TopicsArray |
| 2781. Length of the Longest Valid Substring | Hard | 5% | TopicsArrayHash TableStringSliding Window |
| 3538. Merge Operations for Minimum Travel Time | Hard | 5% | TopicsArrayDynamic ProgrammingPrefix Sum |
| 3342. Find Minimum Time to Reach Last Room II | Medium | 5% | TopicsArrayGraph TheoryHeap (Priority Queue)MatrixShortest Path |
| 3335. Total Characters in String After Transformations I | Medium | 5% | TopicsHash TableMathStringDynamic ProgrammingCounting |
| Web Crawler Multithreaded | Medium | 5% | TopicsDepth-First SearchBreadth-First SearchConcurrency |
| 795. Number of Subarrays with Bounded Maximum | Medium | 5% | TopicsArrayTwo Pointers |
| Inorder Successor in BST II | Medium | 5% | TopicsTreeBinary Search TreeBinary Tree |
| 1992. Find All Groups of Farmland | Medium | 5% | TopicsArrayDepth-First SearchBreadth-First SearchMatrix |
| 1041. Robot Bounded In Circle | Medium | 5% | TopicsMathStringSimulation |
| 1396. Design Underground System | Medium | 5% | TopicsHash TableStringDesign |
| 3361. Shift Distance Between Two Strings | Medium | 5% | TopicsArrayStringPrefix Sum |
