Practice problems across 75+ categories
Practice coding problems across all companies and topics • 3600 problems | 879 Easy | 1856 Medium | 842 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 76 | Ambiguous Coordinates | Medium | StringBacktrackingEnumeration |
| 77 | Amount of New Area Painted Each Day | Hard | ArraySegment TreeOrdered Set |
| 78 | Amount of Time for Binary Tree to Be Infected | Medium | Hash TableTreeDepth-First Search |
| 79 | Analyze Organization Hierarchy | Hard | Database |
| 80 | Analyze Subscription Conversion | Medium | Database |
| 81 | Analyze User Website Visit Pattern | Medium | ArrayHash TableString |
| 82 | Android Unlock Patterns | Medium | Dynamic ProgrammingBacktrackingBit Manipulation |
| 83 | Angle Between Hands of a Clock | Medium | Math |
| 84 | Ant on the Boundary | Easy | ArraySimulationPrefix Sum |
| 85 | Append Characters to String to Make Subsequence | Medium | Two PointersStringGreedy |
| 86 | Append K Integers With Minimal Sum | Medium | ArrayMathGreedy |
| 87 | Apple Redistribution into Boxes | Easy | ArrayGreedySorting |
| 88 | Apples & Oranges | Medium | Database |
| 89 | Apply Bitwise Operations to Make Strings Equal | Medium | StringBit Manipulation |
| 90 | Apply Discount Every n Orders | Medium | ArrayHash TableDesign |
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