Datadog Coding Interview Questions
We track 14 coding questions asked at Datadog, tagged with the algorithms and concepts they test. The most common: Array, Depth-First Search, Dynamic Programming, Breadth-First Search, Hash Table.
Browse all 14 Datadog questions →Concept mix
Each question's weight is split evenly across its concepts, so the shares sum to 100%.
- Array22.9%
- Dynamic Programming13.2%
- Depth-First Search9.0%
- Breadth-First Search7.6%
- Hash Table6.9%
- String6.9%
- Tree6.9%
- Binary Tree4.2%
- Design4.2%
- Geometry2.8%
- Other (7)15.4%
How many questions involve each concept
Share of all 14 tracked Datadog questions that touch each concept. Questions usually involve several, so these overlap.
- Array57.1%
- Depth-First Search28.6%
- Dynamic Programming28.6%
- Breadth-First Search21.4%
- Hash Table21.4%
- String21.4%
- Tree21.4%
- Binary Tree14.3%
- Design14.3%
- Counting7.1%
- Geometry7.1%
- Heap (Priority Queue)7.1%
Where Datadog differs from the average company
Concept weight at Datadog relative to the average across all companies we track. Green means Datadog leans on it harder than most.
- Tree4.6×
- Depth-First Search3.9×
- Breadth-First Search3.5×
- Binary Tree3.2×
- String0.73×
Datadog specialties
Concepts that show up at Datadog but are rarely asked elsewhere. They are easy to get blindsided by.
Difficulty mix
Level split of the 14 tracked Datadog questions.
- Junior36% (5)
- Mid/Senior50% (7)
- Staff14% (2)
Every concept in Datadog interviews
| Concept | Questions | % of questions | Share of mix |
|---|---|---|---|
| Array | 8 | 57.1% | 22.9% |
| Depth-First Search | 4 | 28.6% | 9.0% |
| Dynamic Programming | 4 | 28.6% | 13.2% |
| Breadth-First Search | 3 | 21.4% | 7.6% |
| Hash Table | 3 | 21.4% | 6.9% |
| String | 3 | 21.4% | 6.9% |
| Tree | 3 | 21.4% | 6.9% |
| Binary Tree | 2 | 14.3% | 4.2% |
| Design | 2 | 14.3% | 4.2% |
| Counting | 1 | 7.1% | 2.1% |
| Geometry | 1 | 7.1% | 2.8% |
| Heap (Priority Queue) | 1 | 7.1% | 2.1% |
| Linked List | 1 | 7.1% | 2.1% |
| Math | 1 | 7.1% | 2.8% |
| Queue | 1 | 7.1% | 2.1% |
| Sliding Window | 1 | 7.1% | 2.1% |
| Trie | 1 | 7.1% | 2.1% |
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