Practice problems across 75+ categories
Practice problems frequently asked at Amazon • 3399 problems | 851 Easy | 1772 Medium | 756 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 1006 | Find Missing and Repeated Values | Easy | ArrayHash TableMath |
| 1007 | Find Missing Observations | Medium | ArrayMathSimulation |
| 1008 | Find Mode in Binary Search Tree | Easy | TreeDepth-First SearchBinary Search Tree |
| 1009 | Find Most Frequent Vowel and Consonant | Easy | Hash TableStringCounting |
| 1010 | Find N Unique Integers Sum up to Zero | Easy | ArrayMath |
| 1011 | Find Nearest Point That Has the Same X or Y Coordinate | Easy | Array |
| 1012 | Find Nearest Right Node in Binary Tree | Medium | TreeBreadth-First SearchBinary Tree |
| 1013 | Find Number of Coins to Place in Tree Nodes | Hard | Dynamic ProgrammingTreeDepth-First Search |
| 1014 | Find Number of Ways to Reach the K-th Stair | Hard | MathDynamic ProgrammingBit Manipulation |
| 1015 | Find Numbers with Even Number of Digits | Easy | ArrayMath |
| 1016 | Find Occurrences of an Element in an Array | Medium | ArrayHash Table |
| 1017 | Find Overlapping Shifts | Unknown | Database |
| 1018 | Find Palindrome With Fixed Length | Medium | ArrayMath |
| 1019 | Find Pattern in Infinite Stream I | Medium | ArraySliding WindowRolling Hash |
| 1020 | Find Pattern in Infinite Stream II | Hard | ArraySliding WindowRolling Hash |
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