Nextdoor Coding Interview Questions
We track 4 coding questions asked at Nextdoor, tagged with the algorithms and concepts they test. The most common: Array, Two Pointers, Design, Doubly-Linked List, Dynamic Programming.
Browse all 4 Nextdoor questions →Concept mix
Each question's weight is split evenly across its concepts, so the shares sum to 100%.
- Array17.5%
- Two Pointers17.5%
- Sorting12.5%
- String12.5%
- Design6.2%
- Doubly-Linked List6.2%
- Hash Table6.2%
- Linked List6.2%
- Dynamic Programming5.0%
- Monotonic Stack5.0%
- Other (1)5.0%
How many questions involve each concept
Share of all 4 tracked Nextdoor questions that touch each concept. Questions usually involve several, so these overlap.
- Array50.0%
- Two Pointers50.0%
- Design25.0%
- Doubly-Linked List25.0%
- Dynamic Programming25.0%
- Hash Table25.0%
- Linked List25.0%
- Monotonic Stack25.0%
- Sorting25.0%
- Stack25.0%
- String25.0%
Where Nextdoor differs from the average company
Concept weight at Nextdoor relative to the average across all companies we track. Green means Nextdoor leans on it harder than most.
- Two Pointers4.9×
Nextdoor specialties
Concepts that show up at Nextdoor but are rarely asked elsewhere. They are easy to get blindsided by.
Difficulty mix
Level split of the 4 tracked Nextdoor questions.
- Mid/Senior50% (2)
- Staff50% (2)
Every concept in Nextdoor interviews
| Concept | Questions | % of questions | Share of mix |
|---|---|---|---|
| Array | 2 | 50.0% | 17.5% |
| Two Pointers | 2 | 50.0% | 17.5% |
| Design | 1 | 25.0% | 6.2% |
| Doubly-Linked List | 1 | 25.0% | 6.2% |
| Dynamic Programming | 1 | 25.0% | 5.0% |
| Hash Table | 1 | 25.0% | 6.2% |
| Linked List | 1 | 25.0% | 6.2% |
| Monotonic Stack | 1 | 25.0% | 5.0% |
| Sorting | 1 | 25.0% | 12.5% |
| Stack | 1 | 25.0% | 5.0% |
| String | 1 | 25.0% | 12.5% |
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