Roblox Coding Interview Questions
We track 55 coding questions asked at Roblox, tagged with the algorithms and concepts they test. The most common: Array, Hash Table, String, Math, Counting.
Browse all 55 Roblox questions →Concept mix
Each question's weight is split evenly across its concepts, so the shares sum to 100%.
- Array24.2%
- Hash Table11.6%
- String7.7%
- Matrix4.8%
- Math4.5%
- Counting3.7%
- Sliding Window3.4%
- Stack2.9%
- Sorting2.7%
- Binary Search2.5%
- Other (29)31.9%
How many questions involve each concept
Share of all 55 tracked Roblox questions that touch each concept. Questions usually involve several, so these overlap.
- Array65.5%
- Hash Table38.2%
- String21.8%
- Math14.5%
- Counting12.7%
- Matrix12.7%
- Sliding Window10.9%
- Binary Search9.1%
- Design9.1%
- Sorting9.1%
- Stack9.1%
- Breadth-First Search5.5%
Where Roblox differs from the average company
Concept weight at Roblox relative to the average across all companies we track. Green means Roblox leans on it harder than most.
- Data Stream10.0×
- Randomized8.0×
- Ordered Set4.7×
- Counting3.7×
- Linked List0.67×
- Greedy0.47×
- Two Pointers0.31×
- Dynamic Programming0.23×
Roblox specialties
Concepts that show up at Roblox but are rarely asked elsewhere. They are easy to get blindsided by.
Difficulty mix
Level split of the 55 tracked Roblox questions.
- Junior15% (8)
- Mid/Senior62% (34)
- Staff24% (13)
Every concept in Roblox interviews
| Concept | Questions | % of questions | Share of mix |
|---|---|---|---|
| Array | 36 | 65.5% | 24.2% |
| Hash Table | 21 | 38.2% | 11.6% |
| String | 12 | 21.8% | 7.7% |
| Math | 8 | 14.5% | 4.5% |
| Counting | 7 | 12.7% | 3.7% |
| Matrix | 7 | 12.7% | 4.8% |
| Sliding Window | 6 | 10.9% | 3.4% |
| Binary Search | 5 | 9.1% | 2.5% |
| Design | 5 | 9.1% | 2.4% |
| Sorting | 5 | 9.1% | 2.7% |
| Stack | 5 | 9.1% | 2.9% |
| Breadth-First Search | 3 | 5.5% | 1.7% |
| Depth-First Search | 3 | 5.5% | 1.7% |
| Dynamic Programming | 3 | 5.5% | 1.4% |
| Greedy | 3 | 5.5% | 1.4% |
| Heap (Priority Queue) | 3 | 5.5% | 1.1% |
| Ordered Set | 3 | 5.5% | 1.4% |
| Prefix Sum | 3 | 5.5% | 1.2% |
| Simulation | 3 | 5.5% | 1.9% |
| Trie | 3 | 5.5% | 1.7% |
| Data Stream | 2 | 3.6% | 1.0% |
| Graph Theory | 2 | 3.6% | 1.0% |
| Linked List | 2 | 3.6% | 1.4% |
| Monotonic Stack | 2 | 3.6% | 1.1% |
| Queue | 2 | 3.6% | 1.1% |
| Randomized | 2 | 3.6% | 0.8% |
| Recursion | 2 | 3.6% | 1.1% |
| Topological Sort | 2 | 3.6% | 1.0% |
| Two Pointers | 2 | 3.6% | 1.1% |
| Binary Indexed Tree | 1 | 1.8% | 0.4% |
| Bit Manipulation | 1 | 1.8% | 0.5% |
| Bitmask | 1 | 1.8% | 0.5% |
| Database | 1 | 1.8% | 2.0% |
| Doubly-Linked List | 1 | 1.8% | 0.3% |
| Enumeration | 1 | 1.8% | 0.7% |
| Memoization | 1 | 1.8% | 0.5% |
| Monotonic Queue | 1 | 1.8% | 0.4% |
| Segment Tree | 1 | 1.8% | 0.4% |
| Union-Find | 1 | 1.8% | 0.7% |
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