Waymo Coding Interview Questions
We track 22 coding questions asked at Waymo, tagged with the algorithms and concepts they test. The most common: Array, Hash Table, Binary Search, Matrix, Sorting.
Browse all 22 Waymo questions →Concept mix
Each question's weight is split evenly across its concepts, so the shares sum to 100%.
- Array25.2%
- Hash Table7.7%
- Binary Search6.5%
- Matrix5.8%
- Monotonic Stack5.7%
- Stack5.7%
- Sorting5.6%
- Dynamic Programming4.9%
- String4.2%
- Math4.1%
- Other (11)24.5%
How many questions involve each concept
Share of all 22 tracked Waymo questions that touch each concept. Questions usually involve several, so these overlap.
- Array68.2%
- Hash Table22.7%
- Binary Search18.2%
- Matrix18.2%
- Sorting18.2%
- Dynamic Programming13.6%
- Math13.6%
- Monotonic Stack13.6%
- Stack13.6%
- Breadth-First Search9.1%
- Depth-First Search9.1%
- Geometry9.1%
Where Waymo differs from the average company
Concept weight at Waymo relative to the average across all companies we track. Green means Waymo leans on it harder than most.
- Geometry14.0×
- Monotonic Stack8.1×
- Union-Find3.0×
- Matrix2.5×
- Dynamic Programming0.79×
- Math0.73×
- String0.44×
Waymo specialties
Concepts that show up at Waymo but are rarely asked elsewhere. They are easy to get blindsided by.
Difficulty mix
Level split of the 22 tracked Waymo questions.
- Junior5% (1)
- Mid/Senior59% (13)
- Staff36% (8)
Every concept in Waymo interviews
| Concept | Questions | % of questions | Share of mix |
|---|---|---|---|
| Array | 15 | 68.2% | 25.2% |
| Hash Table | 5 | 22.7% | 7.7% |
| Binary Search | 4 | 18.2% | 6.5% |
| Matrix | 4 | 18.2% | 5.8% |
| Sorting | 4 | 18.2% | 5.6% |
| Dynamic Programming | 3 | 13.6% | 4.9% |
| Math | 3 | 13.6% | 4.1% |
| Monotonic Stack | 3 | 13.6% | 5.7% |
| Stack | 3 | 13.6% | 5.7% |
| Breadth-First Search | 2 | 9.1% | 2.1% |
| Depth-First Search | 2 | 9.1% | 2.1% |
| Geometry | 2 | 9.1% | 2.8% |
| Greedy | 2 | 9.1% | 3.1% |
| Heap (Priority Queue) | 2 | 9.1% | 2.5% |
| Prefix Sum | 2 | 9.1% | 2.8% |
| String | 2 | 9.1% | 4.2% |
| Union-Find | 2 | 9.1% | 2.1% |
| Design | 1 | 4.5% | 1.6% |
| Randomized | 1 | 4.5% | 1.2% |
| Recursion | 1 | 4.5% | 2.1% |
| Simulation | 1 | 4.5% | 2.1% |
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