Bloomberg
1239 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| Triangle | Medium | 43.9% | TopicsArrayDynamic Programming |
| 130. Surrounded Regions | Medium | 43.9% | TopicsArrayDepth-First SearchBreadth-First SearchUnion-FindMatrix |
| 204. Count Primes | Medium | 43.9% | TopicsArrayMathEnumerationNumber TheoryPrimality TestSieve TheoryPrime Number Sieve |
| 231. Power of Two | Easy | 43.9% | TopicsMathBit ManipulationRecursion |
| Implement Queue using Stacks | Easy | 43.9% | TopicsStackDesignQueue |
| 297. Serialize and Deserialize Binary Tree | Hard | 43.9% | TopicsStringTreeDepth-First SearchBreadth-First SearchDesignBinary Tree |
| 441. Arranging Coins | Easy | 43.9% | TopicsMathBinary Search |
| 493. Reverse Pairs | Hard | 43.9% | TopicsArrayBinary SearchDivide and ConquerBinary Indexed TreeSegment TreeMerge SortOrdered SetTreap |
| 543. Diameter of Binary Tree | Easy | 43.9% | TopicsTreeDepth-First SearchBinary TreeDP on Trees |
| 94. Binary Tree Inorder Traversal | Easy | 42.7% | TopicsStackTreeDepth-First SearchBinary Tree |
| Factorial Trailing Zeroes | Medium | 42.7% | TopicsMath |
| Remove Linked List Elements | Easy | 42.7% | TopicsLinked ListRecursion |
| 207. Course Schedule | Medium | 42.7% | TopicsDepth-First SearchBreadth-First SearchGraph TheoryTopological SortDirected Acyclic Graph |
| Basic Calculator | Hard | 42.7% | TopicsMathStringStackRecursion |
| 235. Lowest Common Ancestor of a Binary Search Tree | Medium | 42.7% | TopicsTreeDepth-First SearchBinary Search TreeBinary TreeBinary LiftingLowest Common Ancestor |
| 237. Delete Node in a Linked List | Medium | 42.7% | TopicsLinked List |
| Search a 2D Matrix II | Medium | 42.7% | TopicsArrayBinary SearchDivide and ConquerMatrix |
| 345. Reverse Vowels of a String | Easy | 42.7% | TopicsTwo PointersString |
| Big Countries | Easy | 42.7% | TopicsDatabase |
| 912. Sort an Array | Medium | 42.7% | TopicsArrayDivide and ConquerSortingHeap (Priority Queue)Merge SortBucket SortRadix SortCounting Sort |
| 438. Find All Anagrams in a String | Medium | 42.7% | TopicsHash TableStringSliding Window |
| Simplify Path | Medium | 41.5% | TopicsStringStack |
| Maximal Rectangle | Hard | 41.5% | TopicsArrayDynamic ProgrammingStackMatrixMonotonic Stack |
| Reverse Linked List II | Medium | 41.5% | TopicsLinked List |
| 148. Sort List | Medium | 41.5% | TopicsLinked ListTwo PointersDivide and ConquerSortingMerge Sort |
