SIG LeetCode Questions
10 questions all-time · 0 easy · 8 medium · 2 hard
| # | Problem | Difficulty | Frequency | Acceptance |
|---|---|---|---|---|
| 1 | Text Justification Array, String, Simulation | Hard | 100 | 0.5% |
| 2 | Rotate Image Array, Math, Matrix | Medium | 87 | 0.8% |
| 3 | Number of Black Blocks Array, Hash Table, Enumeration | Medium | 80 | 0.4% |
| 4 | Restore the Array From Adjacent Pairs Array, Hash Table, Depth-First Search | Medium | 80 | 0.8% |
| 5 | Find the Length of the Longest Common Prefix Array, Hash Table, String, Trie | Medium | 80 | 0.6% |
| 6 | Minimum Absolute Difference Between Elements With Constraint Array, Binary Search, Ordered Set | Medium | 80 | 0.4% |
| 7 | Spiral Matrix Array, Matrix, Simulation | Medium | 70 | 0.6% |
| 8 | Block Placement Queries Array, Binary Search, Binary Indexed Tree, Segment Tree, Ordered Set | Hard | 70 | 0.4% |
| 9 | Rotating the Box Array, Two Pointers, Matrix | Medium | 70 | 0.8% |
| 10 | Design Memory Allocator Array, Hash Table, Design, Simulation | Medium | 70 | 0.5% |
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.