Hrt Coding Interview Questions
We track 8 coding questions asked at Hrt, tagged with the algorithms and concepts they test. The most common: Array, Graph Theory, Math, Greedy, Bit Manipulation.
Browse all 8 Hrt questions →Concept mix
Each question's weight is split evenly across its concepts, so the shares sum to 100%.
- Math25.0%
- Array11.5%
- Graph Theory11.5%
- Greedy9.4%
- Bit Manipulation6.2%
- Enumeration6.2%
- Hash Table6.2%
- Dynamic Programming3.1%
- Heap (Priority Queue)3.1%
- Matrix3.1%
- Other (6)14.6%
How many questions involve each concept
Share of all 8 tracked Hrt questions that touch each concept. Questions usually involve several, so these overlap.
- Array37.5%
- Graph Theory37.5%
- Math37.5%
- Greedy25.0%
- Bit Manipulation12.5%
- Depth-First Search12.5%
- Dynamic Programming12.5%
- Enumeration12.5%
- Hash Table12.5%
- Heap (Priority Queue)12.5%
- Matrix12.5%
- Prefix Sum12.5%
Where Hrt differs from the average company
Concept weight at Hrt relative to the average across all companies we track. Green means Hrt leans on it harder than most.
- Graph Theory11.5×
- Math4.5×
- Greedy3.1×
- Array0.60×
Hrt specialties
Concepts that show up at Hrt but are rarely asked elsewhere. They are easy to get blindsided by.
Difficulty mix
Level split of the 8 tracked Hrt questions.
- Junior50% (4)
- Mid/Senior13% (1)
- Staff38% (3)
Every concept in Hrt interviews
| Concept | Questions | % of questions | Share of mix |
|---|---|---|---|
| Array | 3 | 37.5% | 11.5% |
| Graph Theory | 3 | 37.5% | 11.5% |
| Math | 3 | 37.5% | 25.0% |
| Greedy | 2 | 25.0% | 9.4% |
| Bit Manipulation | 1 | 12.5% | 6.2% |
| Depth-First Search | 1 | 12.5% | 2.1% |
| Dynamic Programming | 1 | 12.5% | 3.1% |
| Enumeration | 1 | 12.5% | 6.2% |
| Hash Table | 1 | 12.5% | 6.2% |
| Heap (Priority Queue) | 1 | 12.5% | 3.1% |
| Matrix | 1 | 12.5% | 3.1% |
| Prefix Sum | 1 | 12.5% | 3.1% |
| Sorting | 1 | 12.5% | 3.1% |
| String | 1 | 12.5% | 2.1% |
| Topological Sort | 1 | 12.5% | 2.1% |
| Tree | 1 | 12.5% | 2.1% |
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