Capital One
61 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 2043. Simple Bank System | Medium | 100% | TopicsArrayHash TableDesignSimulation |
| Text Justification | Hard | 91.9% | TopicsArrayStringSimulation |
| 3161. Block Placement Queries | Hard | 90.2% | TopicsArrayBinary SearchBinary Indexed TreeSegment TreeOrdered Set |
| Candy Crush | Medium | 82.6% | TopicsArrayTwo PointersMatrixSimulation |
| 54. Spiral Matrix | Medium | 81.7% | TopicsArrayMatrixSimulation |
| 3071. Minimum Operations to Write the Letter Y on a Grid | Medium | 78.8% | TopicsArrayHash TableMatrixCounting |
| 3043. Find the Length of the Longest Common Prefix | Medium | 76.7% | TopicsArrayHash TableStringTrie |
| 1743. Restore the Array From Adjacent Pairs | Medium | 75.5% | TopicsArrayHash TableDepth-First Search |
| 2672. Number of Adjacent Elements With the Same Color | Medium | 72.9% | TopicsArray |
| 2502. Design Memory Allocator | Medium | 72.9% | TopicsArrayHash TableDesignSimulation |
| Simplify Path | Medium | 71.4% | TopicsStringStack |
| 2768. Number of Black Blocks | Medium | 71.4% | TopicsArrayHash TableEnumeration |
| 2232. Minimize Result by Adding Parentheses to Expression | Medium | 71.4% | TopicsStringEnumeration |
| 48. Rotate Image | Medium | 66.3% | TopicsArrayMathMatrix |
| 1438. Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit | Medium | 66.3% | TopicsArrayQueueSliding WindowHeap (Priority Queue)Ordered SetMonotonic Queue |
| 1390. Four Divisors | Medium | 64.2% | TopicsArrayMathPrime FactorizationSieve Theory |
| 84. Largest Rectangle in Histogram | Hard | 64.2% | TopicsArrayStackMonotonic StackRange Minimum/Maximum Query |
| 200. Number of Islands | Medium | 64.2% | TopicsArrayDepth-First SearchBreadth-First SearchUnion-FindMatrix |
| 2169. Count Operations to Obtain Zero | Easy | 64.2% | TopicsMathSimulation |
| 3101. Count Alternating Subarrays | Medium | 61.9% | TopicsArrayMath |
| Binary Tree Paths | Easy | 59.3% | TopicsStringBacktrackingTreeDepth-First SearchBinary Tree |
| 1861. Rotating the Box | Medium | 59.3% | TopicsArrayTwo PointersMatrix |
| 9. Palindrome Number | Easy | 56.3% | TopicsMath |
| 3045. Count Prefix and Suffix Pairs II | Hard | 56.3% | TopicsArrayStringTrieRolling HashString MatchingHash FunctionZ Algorithm |
| 3034. Number of Subarrays That Match a Pattern I | Medium | 56.3% | TopicsArrayRolling HashString MatchingHash Function |
