Bloomberg
1239 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 3753. Total Waviness of Numbers in Range II | Hard | 17.9% | TopicsMathDynamic Programming |
| 2196. Create Binary Tree From Descriptions | Medium | 17.9% | TopicsArrayHash TableTreeBinary Tree |
| 1840. Maximum Building Height | Hard | 17.9% | TopicsArrayMathSorting |
| 3700. Number of ZigZag Arrays II | Hard | 17.9% | TopicsMathDynamic Programming |
| 3483. Unique 3-Digit Even Numbers | Easy | 17.9% | TopicsArrayHash TableRecursionEnumeration |
| 1291. Sequential Digits | Medium | 17.9% | TopicsEnumeration |
| 3517. Smallest Palindromic Rearrangement I | Medium | 17.9% | TopicsStringSortingCounting Sort |
| 3014. Minimum Number of Pushes to Type Word I | Easy | 17.9% | TopicsMathStringGreedy |
| 3345. Smallest Divisible Digit Product I | Easy | 17.9% | TopicsMathEnumeration |
| 1510. Stone Game IV | Hard | 17.9% | TopicsMathDynamic ProgrammingMinimaxGame TheoryNim GameSprague–Grundy TheoremZero-Sum Game |
| Customer Placing the Largest Number of Orders | Easy | 17.9% | TopicsDatabase |
| 2948. Make Lexicographically Smallest Array by Swapping Elements | Medium | 17.9% | TopicsArrayUnion-FindSorting |
| Delete Operation for Two Strings | Medium | 17.9% | TopicsStringDynamic ProgrammingLongest Common Subsequence |
| 940. Distinct Subsequences II | Hard | 17.9% | TopicsStringDynamic Programming |
| 1541. Minimum Insertions to Balance a Parentheses String | Medium | 17.9% | TopicsStringStackGreedyBracket Sequences |
| Spiral Matrix II | Medium | 13.5% | TopicsArrayMatrixSimulation |
| Convert Sorted List to Binary Search Tree | Medium | 13.5% | TopicsLinked ListDivide and ConquerTreeBinary Search TreeBinary Tree |
| Palindrome Partitioning II | Hard | 13.5% | TopicsStringDynamic Programming |
| 145. Binary Tree Postorder Traversal | Easy | 13.5% | TopicsStackTreeDepth-First SearchBinary Tree |
| 212. Word Search II | Hard | 13.5% | TopicsArrayStringBacktrackingTrieMatrix |
| 307. Range Sum Query - Mutable | Medium | 13.5% | TopicsArrayDivide and ConquerDesignBinary Indexed TreeSegment TreeSqrt Decomposition |
| Bulb Switcher | Medium | 13.5% | TopicsMathBrainteaser |
| 355. Design Twitter | Medium | 13.5% | TopicsHash TableLinked ListDesignHeap (Priority Queue) |
| Kth Smallest Element in a Sorted Matrix | Medium | 13.5% | TopicsArrayBinary SearchSortingHeap (Priority Queue)Matrix |
| 404. Sum of Left Leaves | Easy | 13.5% | TopicsTreeDepth-First SearchBreadth-First SearchBinary Tree |
