Liftoff Coding Interview Questions
We track 4 coding questions asked at Liftoff, tagged with the algorithms and concepts they test. The most common: Array, Backtracking, Binary Search, Heap (Priority Queue), Math.
Browse all 4 Liftoff questions →Concept mix
Each question's weight is split evenly across its concepts, so the shares sum to 100%.
- Backtracking25.0%
- Array21.7%
- Heap (Priority Queue)8.3%
- Matrix8.3%
- Simulation8.3%
- Sorting8.3%
- Binary Search5.0%
- Math5.0%
- Prefix Sum5.0%
- Randomized5.0%
How many questions involve each concept
Share of all 4 tracked Liftoff questions that touch each concept. Questions usually involve several, so these overlap.
- Array75.0%
- Backtracking25.0%
- Binary Search25.0%
- Heap (Priority Queue)25.0%
- Math25.0%
- Matrix25.0%
- Prefix Sum25.0%
- Randomized25.0%
- Simulation25.0%
- Sorting25.0%
Where Liftoff differs from the average company
Concept weight at Liftoff relative to the average across all companies we track. Green means Liftoff leans on it harder than most.
Liftoff specialties
Concepts that show up at Liftoff but are rarely asked elsewhere. They are easy to get blindsided by.
Difficulty mix
Level split of the 4 tracked Liftoff questions.
- Mid/Senior75% (3)
- Staff25% (1)
Every concept in Liftoff interviews
| Concept | Questions | % of questions | Share of mix |
|---|---|---|---|
| Array | 3 | 75.0% | 21.7% |
| Backtracking | 1 | 25.0% | 25.0% |
| Binary Search | 1 | 25.0% | 5.0% |
| Heap (Priority Queue) | 1 | 25.0% | 8.3% |
| Math | 1 | 25.0% | 5.0% |
| Matrix | 1 | 25.0% | 8.3% |
| Prefix Sum | 1 | 25.0% | 5.0% |
| Randomized | 1 | 25.0% | 5.0% |
| Simulation | 1 | 25.0% | 8.3% |
| Sorting | 1 | 25.0% | 8.3% |
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