Snowflake
100 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 202. Happy Number | Easy | 100% | TopicsHash TableMathTwo PointersFloyd's Cycle Finding Algorithm |
| 2050. Parallel Courses III | Hard | 99.2% | TopicsArrayDynamic ProgrammingGraph TheoryTopological SortDirected Acyclic Graph |
| Design In-Memory File System | Hard | 96.7% | TopicsHash TableStringDesignTrieSorting |
| 210. Course Schedule II | Medium | 96.7% | TopicsDepth-First SearchBreadth-First SearchGraph TheoryTopological Sort |
| 76. Minimum Window Substring | Hard | 91.9% | TopicsHash TableStringSliding Window |
| 212. Word Search II | Hard | 89.6% | TopicsArrayStringBacktrackingTrieMatrix |
| 2303. Calculate Amount Paid in Taxes | Easy | 85.7% | TopicsArraySimulation |
| 42. Trapping Rain Water | Hard | 85.7% | TopicsArrayTwo PointersDynamic ProgrammingStackMonotonic Stack |
| 1600. Throne Inheritance | Medium | 85.7% | TopicsHash TableTreeDepth-First SearchDesign |
| 2096. Step-By-Step Directions From a Binary Tree Node to Another | Medium | 85.7% | TopicsStringTreeDepth-First SearchBinary TreeBinary LiftingLowest Common Ancestor |
| 2742. Painting the Walls | Hard | 82.6% | TopicsArrayDynamic Programming |
| 438. Find All Anagrams in a String | Medium | 82.6% | TopicsHash TableStringSliding Window |
| 1235. Maximum Profit in Job Scheduling | Hard | 80.9% | TopicsArrayBinary SearchDynamic ProgrammingSorting |
| 2062. Count Vowel Substrings of a String | Easy | 77.1% | TopicsHash TableString |
| Maximum Number of Upgradable Servers | Medium | 74.9% | TopicsArrayMathBinary Search |
| 2856. Minimum Array Length After Pair Removals | Medium | 72.5% | TopicsArrayHash TableTwo PointersBinary SearchGreedyCounting |
| 3176. Find the Maximum Length of a Good Subsequence I | Medium | 72.5% | TopicsArrayHash TableDynamic Programming |
| 207. Course Schedule | Medium | 72.5% | TopicsDepth-First SearchBreadth-First SearchGraph TheoryTopological SortDirected Acyclic Graph |
| 3177. Find the Maximum Length of a Good Subsequence II | Hard | 69.9% | TopicsArrayHash TableDynamic Programming |
| 23. Merge k Sorted Lists | Hard | 69.9% | TopicsLinked ListDivide and ConquerHeap (Priority Queue)Merge SortTournament Sort |
| 1136. Parallel Courses | Medium | 69.9% | TopicsGraph TheoryTopological SortDirected Acyclic Graph |
| 3880. Minimum Absolute Difference Between Two Values | Easy | 69.9% | TopicsArrayEnumeration |
| 695. Max Area of Island | Medium | 66.8% | TopicsArrayDepth-First SearchBreadth-First SearchUnion-FindMatrix |
| 1. Two Sum | Easy | 66.8% | TopicsArrayHash Table |
| Simplify Path | Medium | 66.8% | TopicsStringStack |
