2324 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 2497. Maximum Star Sum of a Graph | Medium | 5% | TopicsArrayGreedyGraph TheorySortingHeap (Priority Queue) |
| 3309. Maximum Possible Number by Binary Concatenation | Medium | 5% | TopicsArrayBit ManipulationEnumeration |
| 3270. Find the Key of the Numbers | Easy | 5% | TopicsMath |
| 3387. Maximize Amount After Two Days of Conversions | Medium | 5% | TopicsArrayStringDepth-First SearchBreadth-First SearchGraph Theory |
| 1252. Cells with Odd Values in a Matrix | Easy | 5% | TopicsArrayMathSimulation |
| 3042. Count Prefix and Suffix Pairs I | Easy | 5% | TopicsArrayStringTrieRolling HashString MatchingHash Function |
| 1400. Construct K Palindrome Strings | Medium | 5% | TopicsHash TableStringGreedyCounting |
| 2425. Bitwise XOR of All Pairings | Medium | 5% | TopicsArrayBit ManipulationBrainteaser |
| 2181. Merge Nodes in Between Zeros | Medium | 5% | TopicsLinked ListSimulation |
| Count Univalue Subtrees | Medium | 5% | TopicsTreeDepth-First SearchBinary TreeDP on Trees |
| 1035. Uncrossed Lines | Medium | 5% | TopicsArrayDynamic ProgrammingLongest Common Subsequence |
| 2658. Maximum Number of Fish in a Grid | Medium | 5% | TopicsArrayDepth-First SearchBreadth-First SearchUnion-FindMatrix |
| 3409. Longest Subsequence With Decreasing Adjacent Difference | Medium | 5% | TopicsArrayDynamic Programming |
| 3066. Minimum Operations to Exceed Threshold Value II | Medium | 5% | TopicsArrayHeap (Priority Queue)Simulation |
| Biggest Single Number | Easy | 5% | TopicsDatabase |
| 842. Split Array into Fibonacci Sequence | Medium | 5% | TopicsStringBacktracking |
| 1678. Goal Parser Interpretation | Easy | 5% | TopicsString |
| 1221. Split a String in Balanced Strings | Easy | 5% | TopicsStringGreedyCounting |
| 3459. Length of Longest V-Shaped Diagonal Segment | Hard | 5% | TopicsArrayDynamic ProgrammingMemoizationMatrix |
| 2596. Check Knight Tour Configuration | Medium | 5% | TopicsArrayDepth-First SearchBreadth-First SearchMatrixSimulation |
| 3158. Find the XOR of Numbers Which Appear Twice | Easy | 5% | TopicsArrayHash TableBit Manipulation |
| Reshape Data: Concatenate | Easy | 5% | Topics— |
| 2335. Minimum Amount of Time to Fill Cups | Easy | 5% | TopicsArrayGreedySortingHeap (Priority Queue) |
| 2262. Total Appeal of A String | Hard | 5% | TopicsHash TableStringDynamic Programming |
| 2771. Longest Non-decreasing Subarray From Two Arrays | Medium | 5% | TopicsArrayDynamic Programming |
