Practice problems across 75+ categories
Practice problems frequently asked at Amazon • 3399 problems | 851 Easy | 1772 Medium | 756 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 1321 | HTML Entity Parser | Medium | Hash TableString |
| 1322 | Human Traffic of Stadium | Hard | Database |
| 1323 | Identify the Largest Outlier in an Array | Medium | ArrayHash TableCounting |
| 1324 | Immediate Food Delivery I | Easy | Database |
| 1325 | Immediate Food Delivery II | Medium | Database |
| 1326 | Immediate Food Delivery III | Medium | Database |
| 1327 | Implement Magic Dictionary | Medium | Hash TableStringDepth-First Search |
| 1328 | Implement Queue using Stacks | Easy | StackDesignQueue |
| 1329 | Implement Rand10() Using Rand7() | Medium | MathRejection SamplingRandomized |
| 1330 | Implement Stack using Queues | Easy | StackDesignQueue |
| 1331 | Implement Trie II (Prefix Tree) | Unknown | Hash TableStringDesign |
| 1332 | Implement Trie (Prefix Tree) | Medium | Hash TableStringDesign |
| 1333 | Increasing Decreasing String | Easy | Hash TableStringCounting |
| 1334 | Increasing Order Search Tree | Easy | StackTreeDepth-First Search |
| 1335 | Increasing Triplet Subsequence | Medium | ArrayGreedy |
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