2324 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| Kth Smallest Number in Multiplication Table | Hard | 18.2% | TopicsMathBinary Search |
| 748. Shortest Completing Word | Easy | 18.2% | TopicsArrayHash TableString |
| 760. Find Anagram Mappings | Easy | 18.2% | TopicsArrayHash Table |
| Construct Quad Tree | Medium | 18.2% | TopicsArrayDivide and ConquerTreeMatrix |
| 830. Positions of Large Groups | Easy | 18.2% | TopicsString |
| Random Pick with Blacklist | Hard | 18.2% | TopicsArrayHash TableMathBinary SearchSortingRandomized |
| 871. Minimum Number of Refueling Stops | Hard | 18.2% | TopicsArrayDynamic ProgrammingGreedyHeap (Priority Queue) |
| 906. Super Palindromes | Hard | 18.2% | TopicsMathStringEnumeration |
| Confusing Number | Easy | 18.2% | TopicsMath |
| 1028. Recover a Tree From Preorder Traversal | Hard | 18.2% | TopicsStringTreeDepth-First SearchBinary Tree |
| 1167. Minimum Cost to Connect Sticks | Medium | 18.2% | TopicsArrayGreedyHeap (Priority Queue) |
| 1168. Optimize Water Distribution in a Village | Hard | 18.2% | TopicsUnion-FindGraph TheoryHeap (Priority Queue)Minimum Spanning TreePrim's AlgorithmKruskal's AlgorithmBorůvka's Algorithm |
| 1231. Divide Chocolate | Hard | 18.2% | TopicsArrayBinary Search |
| 1291. Sequential Digits | Medium | 18.2% | TopicsEnumeration |
| 1287. Element Appearing More Than 25% In Sorted Array | Easy | 18.2% | TopicsArray |
| 1316. Distinct Echo Substrings | Hard | 18.2% | TopicsStringTrieRolling HashSuffix ArrayHash FunctionSuffix AutomatonSuffix Tree |
| 1147. Longest Chunked Palindrome Decomposition | Hard | 18.2% | TopicsTwo PointersStringDynamic ProgrammingGreedyRolling HashHash Function |
| 1302. Deepest Leaves Sum | Medium | 18.2% | TopicsTreeDepth-First SearchBreadth-First SearchBinary Tree |
| 1706. Where Will the Ball Fall | Medium | 18.2% | TopicsArrayMatrixSimulation |
| 2218. Maximum Value of K Coins From Piles | Hard | 18.2% | TopicsArrayDynamic ProgrammingPrefix Sum |
| 1269. Number of Ways to Stay in the Same Place After Some Steps | Hard | 18.2% | TopicsDynamic Programming |
| 1388. Pizza With 3n Slices | Hard | 18.2% | TopicsArrayDynamic ProgrammingGreedyHeap (Priority Queue) |
| 1414. Find the Minimum Number of Fibonacci Numbers Whose Sum Is K | Medium | 18.2% | TopicsMathGreedy |
| 1447. Simplified Fractions | Medium | 18.2% | TopicsMathStringNumber TheoryEuclidean AlgorithmGreatest Common Divisor |
| 1449. Form Largest Integer With Digits That Add up to Target | Hard | 18.2% | TopicsArrayDynamic ProgrammingKnapsack ProblemComplete Knapsack |
