Practice problems across 75+ categories
Practice problems frequently asked at Amazon • 3399 problems | 851 Easy | 1772 Medium | 756 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 946 | Find Consistently Improving Employees | Medium | Database |
| 947 | Find COVID Recovery Patients | Medium | Database |
| 948 | Find Cumulative Salary of an Employee | Hard | Database |
| 949 | Find Customer Referee | Easy | Database |
| 950 | Find Customers With Positive Revenue this Year | Easy | Database |
| 951 | Find Cutoff Score for Each School | Medium | Database |
| 952 | Find Distance in a Binary Tree | Medium | Hash TableTreeDepth-First Search |
| 953 | Find Duplicate File in System | Medium | ArrayHash TableString |
| 954 | Find Duplicate Subtrees | Medium | Hash TableTreeDepth-First Search |
| 955 | Find Edges in Shortest Paths | Hard | Depth-First SearchBreadth-First SearchGraph |
| 956 | Find Elements in a Contaminated Binary Tree | Medium | Hash TableTreeDepth-First Search |
| 957 | Find Eventual Safe States | Medium | Depth-First SearchBreadth-First SearchGraph |
| 958 | Find Expensive Cities | Easy | Database |
| 959 | Find First and Last Position of Element in Sorted Array | Medium | ArrayBinary Search |
| 960 | Find First Palindromic String in the Array | Easy | ArrayTwo PointersString |
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