Line Coding Interview Questions
We track 3 coding questions asked at Line, tagged with the algorithms and concepts they test. The most common: Array, Design, Doubly-Linked List, Dynamic Programming, Hash Table.
Browse all 3 Line questions →Concept mix
Each question's weight is split evenly across its concepts, so the shares sum to 100%.
- Array17.8%
- Dynamic Programming11.1%
- Sorting11.1%
- Design8.3%
- Doubly-Linked List8.3%
- Hash Table8.3%
- Linked List8.3%
- Heap (Priority Queue)6.7%
- Monotonic Queue6.7%
- Queue6.7%
- Other (1)6.7%
How many questions involve each concept
Share of all 3 tracked Line questions that touch each concept. Questions usually involve several, so these overlap.
- Array66.7%
- Design33.3%
- Doubly-Linked List33.3%
- Dynamic Programming33.3%
- Hash Table33.3%
- Heap (Priority Queue)33.3%
- Linked List33.3%
- Monotonic Queue33.3%
- Queue33.3%
- Sliding Window33.3%
- Sorting33.3%
Where Line differs from the average company
Concept weight at Line relative to the average across all companies we track. Green means Line leans on it harder than most.
Line specialties
Concepts that show up at Line but are rarely asked elsewhere. They are easy to get blindsided by.
Difficulty mix
Level split of the 3 tracked Line questions.
- Mid/Senior33% (1)
- Staff67% (2)
Every concept in Line interviews
| Concept | Questions | % of questions | Share of mix |
|---|---|---|---|
| Array | 2 | 66.7% | 17.8% |
| Design | 1 | 33.3% | 8.3% |
| Doubly-Linked List | 1 | 33.3% | 8.3% |
| Dynamic Programming | 1 | 33.3% | 11.1% |
| Hash Table | 1 | 33.3% | 8.3% |
| Heap (Priority Queue) | 1 | 33.3% | 6.7% |
| Linked List | 1 | 33.3% | 8.3% |
| Monotonic Queue | 1 | 33.3% | 6.7% |
| Queue | 1 | 33.3% | 6.7% |
| Sliding Window | 1 | 33.3% | 6.7% |
| Sorting | 1 | 33.3% | 11.1% |
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