Box LeetCode Questions
7 questions all-time · 2 easy · 3 medium · 2 hard
| # | Problem | Difficulty | Frequency | Acceptance |
|---|---|---|---|---|
| 1 | Top K Frequent Words Array, Hash Table, String, Trie, Sorting, Heap (Priority Queue), Bucket Sort, Counting | Medium | 100 | 0.6% |
| 2 | Number of 1 Bits Divide and Conquer, Bit Manipulation | Easy | 85 | 0.8% |
| 3 | Rotate Array Array, Math, Two Pointers | Medium | 79 | 0.5% |
| 4 | Redundant Connection Depth-First Search, Breadth-First Search, Union-Find, Graph Theory | Medium | 76 | 0.7% |
| 5 | Word Ladder Hash Table, String, Breadth-First Search | Hard | 71 | 0.5% |
| 6 | Univalued Binary Tree Tree, Depth-First Search, Breadth-First Search, Binary Tree | Easy | 58 | 0.7% |
| 7 | Word Ladder II Hash Table, String, Backtracking, Breadth-First Search | Hard | 58 | 0.3% |
How to read this list
The tabs at the top split the questions by how recently people said they were asked in interviews. "Last 30 Days" is the past month, "Last 3 Months" is the past quarter, and so on. "All Time" is every question on record for this company.
Frequency is a score from 0 to 100 for how often a question showed up in that time window. A higher number means it came up more often, so the list starts with the most common questions first. Acceptance is the share of submissions that pass on LeetCode. Click any question to open it on LeetCode.