Nielsen Coding Interview Questions
We track 9 coding questions asked at Nielsen, tagged with the algorithms and concepts they test. The most common: Array, Dynamic Programming, String, Hash Table, Sorting.
Browse all 9 Nielsen questions →Concept mix
Each question's weight is split evenly across its concepts, so the shares sum to 100%.
- Array23.1%
- Dynamic Programming22.2%
- String19.4%
- Hash Table8.3%
- Sorting8.3%
- Greedy3.7%
- Math3.7%
- Simulation3.7%
- Stack3.7%
- Two Pointers3.7%
How many questions involve each concept
Share of all 9 tracked Nielsen questions that touch each concept. Questions usually involve several, so these overlap.
- Array55.6%
- Dynamic Programming55.6%
- String55.6%
- Hash Table22.2%
- Sorting22.2%
- Greedy11.1%
- Math11.1%
- Simulation11.1%
- Stack11.1%
- Two Pointers11.1%
Where Nielsen differs from the average company
Concept weight at Nielsen relative to the average across all companies we track. Green means Nielsen leans on it harder than most.
- Dynamic Programming3.6×
- Sorting2.1×
- String2.0×
- Hash Table1.2×
Difficulty mix
Level split of the 9 tracked Nielsen questions.
- Junior11% (1)
- Mid/Senior67% (6)
- Staff22% (2)
Every concept in Nielsen interviews
| Concept | Questions | % of questions | Share of mix |
|---|---|---|---|
| Array | 5 | 55.6% | 23.1% |
| Dynamic Programming | 5 | 55.6% | 22.2% |
| String | 5 | 55.6% | 19.4% |
| Hash Table | 2 | 22.2% | 8.3% |
| Sorting | 2 | 22.2% | 8.3% |
| Greedy | 1 | 11.1% | 3.7% |
| Math | 1 | 11.1% | 3.7% |
| Simulation | 1 | 11.1% | 3.7% |
| Stack | 1 | 11.1% | 3.7% |
| Two Pointers | 1 | 11.1% | 3.7% |
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