Practice problems across 75+ categories
Practice coding problems across all companies and topics • 3600 problems | 879 Easy | 1856 Medium | 842 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 31 | Add Edges to Make Degrees of All Nodes Even | Hard | Hash TableGraph |
| 32 | Add Minimum Number of Rungs | Medium | ArrayGreedy |
| 33 | Add One Row to Tree | Medium | TreeDepth-First SearchBreadth-First Search |
| 34 | Add Strings | Easy | MathStringSimulation |
| 35 | Add to Array-Form of Integer | Easy | ArrayMath |
| 36 | Add Two Integers | Easy | Math |
| 37 | Add Two Numbers | Medium | Linked ListMathRecursion |
| 38 | Add Two Numbers II | Medium | Linked ListMathStack |
| 39 | Add Two Polynomials Represented as Linked Lists | Medium | Linked ListMathTwo Pointers |
| 40 | Add Two Promises | Easy | JavaScript |
| 41 | Adding Spaces to a String | Medium | ArrayTwo PointersString |
| 42 | Adding Two Negabinary Numbers | Medium | ArrayMath |
| 43 | Additive Number | Medium | StringBacktracking |
| 44 | Adjacency List Graph | Medium | GraphsGraphHashMap |
| 45 | Adjacent Increasing Subarrays Detection I | Easy | Array |
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