Redfin Coding Interview Questions
We track 2 coding questions asked at Redfin, tagged with the algorithms and concepts they test. The most common: Array, Breadth-First Search, Bucket Sort, Counting, Depth-First Search.
Browse all 2 Redfin questions →Concept mix
Each question's weight is split evenly across its concepts, so the shares sum to 100%.
- Array16.2%
- Breadth-First Search10.0%
- Depth-First Search10.0%
- Matrix10.0%
- Union-Find10.0%
- Bucket Sort6.2%
- Counting6.2%
- Hash Table6.2%
- Heap (Priority Queue)6.2%
- Sorting6.2%
- Other (2)12.4%
How many questions involve each concept
Share of all 2 tracked Redfin questions that touch each concept. Questions usually involve several, so these overlap.
- Array100.0%
- Breadth-First Search50.0%
- Bucket Sort50.0%
- Counting50.0%
- Depth-First Search50.0%
- Hash Table50.0%
- Heap (Priority Queue)50.0%
- Matrix50.0%
- Sorting50.0%
- String50.0%
- Trie50.0%
- Union-Find50.0%
Where Redfin differs from the average company
Concept weight at Redfin relative to the average across all companies we track. Green means Redfin leans on it harder than most.
- Array0.84×
Redfin specialties
Concepts that show up at Redfin but are rarely asked elsewhere. They are easy to get blindsided by.
Difficulty mix
Level split of the 2 tracked Redfin questions.
- Mid/Senior100% (2)
Every concept in Redfin interviews
| Concept | Questions | % of questions | Share of mix |
|---|---|---|---|
| Array | 2 | 100.0% | 16.2% |
| Breadth-First Search | 1 | 50.0% | 10.0% |
| Bucket Sort | 1 | 50.0% | 6.2% |
| Counting | 1 | 50.0% | 6.2% |
| Depth-First Search | 1 | 50.0% | 10.0% |
| Hash Table | 1 | 50.0% | 6.2% |
| Heap (Priority Queue) | 1 | 50.0% | 6.2% |
| Matrix | 1 | 50.0% | 10.0% |
| Sorting | 1 | 50.0% | 6.2% |
| String | 1 | 50.0% | 6.2% |
| Trie | 1 | 50.0% | 6.2% |
| Union-Find | 1 | 50.0% | 10.0% |
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