Practice problems across 75+ categories
Practice problems frequently asked at Amazon • 3399 problems | 851 Easy | 1772 Medium | 756 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 1351 | Integer Replacement | Medium | Dynamic ProgrammingGreedyBit Manipulation |
| 1352 | Integer to English Words | Hard | MathStringRecursion |
| 1353 | Integer to Roman | Medium | Hash TableMathString |
| 1354 | Interleaving String | Medium | StringDynamic Programming |
| 1355 | Intersection of Multiple Arrays | Easy | ArrayHash TableSorting |
| 1356 | Intersection of Three Sorted Arrays | Easy | ArrayHash TableBinary Search |
| 1357 | Intersection of Two Arrays | Easy | ArrayHash TableTwo Pointers |
| 1358 | Intersection of Two Arrays II | Easy | ArrayHash TableTwo Pointers |
| 1359 | Interval Cancellation | Easy | JavaScript |
| 1360 | Interval List Intersections | Medium | ArrayTwo PointersLine Sweep |
| 1361 | Intervals Between Identical Elements | Medium | ArrayHash TablePrefix Sum |
| 1362 | Invalid Transactions | Medium | ArrayHash TableString |
| 1363 | Inverse Coin Change | Medium | ArrayDynamic Programming |
| 1364 | Inversion of Object | Easy | Database |
| 1365 | Invert Binary Tree | Easy | TreeDepth-First SearchBreadth-First Search |
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