Roku Coding Interview Questions
We track 18 coding questions asked at Roku, tagged with the algorithms and concepts they test. The most common: Array, String, Hash Table, Stack, Breadth-First Search.
Browse all 18 Roku questions →Concept mix
Each question's weight is split evenly across its concepts, so the shares sum to 100%.
- Array18.5%
- String10.2%
- Stack6.5%
- Greedy6.0%
- Math5.6%
- Simulation5.1%
- Hash Table4.9%
- Binary Search4.2%
- Dynamic Programming4.2%
- Sorting3.5%
- Other (20)31.5%
How many questions involve each concept
Share of all 18 tracked Roku questions that touch each concept. Questions usually involve several, so these overlap.
- Array55.6%
- String33.3%
- Hash Table22.2%
- Stack22.2%
- Breadth-First Search16.7%
- Greedy16.7%
- Math16.7%
- Simulation16.7%
- Sorting16.7%
- Binary Search11.1%
- Depth-First Search11.1%
- Dynamic Programming11.1%
Where Roku differs from the average company
Concept weight at Roku relative to the average across all companies we track. Green means Roku leans on it harder than most.
- Simulation3.0×
- Stack2.6×
- Sliding Window2.1×
- Greedy2.0×
- Hash Table0.73×
- Dynamic Programming0.68×
Roku specialties
Concepts that show up at Roku but are rarely asked elsewhere. They are easy to get blindsided by.
Difficulty mix
Level split of the 18 tracked Roku questions.
- Junior17% (3)
- Mid/Senior56% (10)
- Staff28% (5)
Every concept in Roku interviews
| Concept | Questions | % of questions | Share of mix |
|---|---|---|---|
| Array | 10 | 55.6% | 18.5% |
| String | 6 | 33.3% | 10.2% |
| Hash Table | 4 | 22.2% | 4.9% |
| Stack | 4 | 22.2% | 6.5% |
| Breadth-First Search | 3 | 16.7% | 3.4% |
| Greedy | 3 | 16.7% | 6.0% |
| Math | 3 | 16.7% | 5.6% |
| Simulation | 3 | 16.7% | 5.1% |
| Sorting | 3 | 16.7% | 3.5% |
| Binary Search | 2 | 11.1% | 4.2% |
| Depth-First Search | 2 | 11.1% | 2.0% |
| Dynamic Programming | 2 | 11.1% | 4.2% |
| Matrix | 2 | 11.1% | 2.5% |
| Sliding Window | 2 | 11.1% | 3.2% |
| Two Pointers | 2 | 11.1% | 3.2% |
| Backtracking | 1 | 5.6% | 1.9% |
| Binary Tree | 1 | 5.6% | 0.9% |
| Bit Manipulation | 1 | 5.6% | 1.4% |
| Bucket Sort | 1 | 5.6% | 0.7% |
| Counting | 1 | 5.6% | 0.7% |
| Design | 1 | 5.6% | 1.4% |
| Divide and Conquer | 1 | 5.6% | 0.7% |
| Doubly-Linked List | 1 | 5.6% | 1.4% |
| Heap (Priority Queue) | 1 | 5.6% | 0.7% |
| Linked List | 1 | 5.6% | 1.4% |
| Prefix Sum | 1 | 5.6% | 1.4% |
| Quickselect | 1 | 5.6% | 0.7% |
| Recursion | 1 | 5.6% | 1.9% |
| Tree | 1 | 5.6% | 0.9% |
| Union-Find | 1 | 5.6% | 1.1% |
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