Practice problems across 75+ categories
Practice problems frequently asked at Amazon • 3399 problems | 851 Easy | 1772 Medium | 756 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 151 | Biggest Window Between Visits | Medium | Database |
| 152 | Bikes Last Time Used | Easy | Database |
| 153 | Binary Gap | Easy | Bit Manipulation |
| 154 | Binary Number with Alternating Bits | Easy | Bit Manipulation |
| 155 | Binary Prefix Divisible By 5 | Easy | ArrayBit Manipulation |
| 156 | Binary Search | Easy | ArrayBinary Search |
| 157 | Binary Search Tree Iterator | Medium | StackTreeDesign |
| 158 | Binary Search Tree Iterator II | Medium | StackTreeDesign |
| 159 | Binary Search Tree to Greater Sum Tree | Medium | TreeDepth-First SearchBinary Search Tree |
| 160 | Binary Searchable Numbers in an Unsorted Array | Medium | ArrayBinary Search |
| 161 | Binary String With Substrings Representing 1 To N | Medium | Hash TableStringBit Manipulation |
| 162 | Binary Subarrays With Sum | Medium | ArrayHash TableSliding Window |
| 163 | Binary Tree Cameras | Hard | Dynamic ProgrammingTreeDepth-First Search |
| 164 | Binary Tree Coloring Game | Medium | TreeDepth-First SearchBinary Tree |
| 165 | Binary Tree Inorder Traversal | Easy | StackTreeDepth-First Search |
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