Practice problems across 75+ categories
Practice problems frequently asked at Amazon • 3399 problems | 851 Easy | 1772 Medium | 756 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 2386 | Number of Divisible Substrings | Medium | Hash TableStringCounting |
| 2387 | Number of Divisible Triplet Sums | Medium | ArrayHash Table |
| 2388 | Number of Employees Who Met the Target | Easy | Array |
| 2389 | Number of Enclaves | Medium | ArrayDepth-First SearchBreadth-First Search |
| 2390 | Number of Equal Count Substrings | Medium | Hash TableStringSliding Window |
| 2391 | Number of Equal Numbers Blocks | Medium | ArrayBinary SearchInteractive |
| 2392 | Number of Equivalent Domino Pairs | Easy | ArrayHash TableCounting |
| 2393 | Number of Even and Odd Bits | Easy | Bit Manipulation |
| 2394 | Number of Excellent Pairs | Hard | ArrayHash TableBinary Search |
| 2395 | Number of Flowers in Full Bloom | Hard | ArrayHash TableBinary Search |
| 2396 | Number of Good Binary Strings | Medium | Dynamic Programming |
| 2397 | Number of Good Leaf Nodes Pairs | Medium | TreeDepth-First SearchBinary Tree |
| 2398 | Number of Good Pairs | Easy | ArrayHash TableMath |
| 2399 | Number of Good Paths | Hard | ArrayHash TableTree |
| 2400 | Number of Good Ways to Split a String | Medium | Hash TableStringDynamic Programming |
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