Bcg Coding Interview Questions
We track 10 coding questions asked at Bcg, tagged with the algorithms and concepts they test. The most common: Array, Hash Table, Math, Simulation, Sorting.
Browse all 10 Bcg questions →Concept mix
Each question's weight is split evenly across its concepts, so the shares sum to 100%.
- Array25.0%
- Math12.5%
- Database10.0%
- String8.3%
- Hash Table6.7%
- Simulation5.8%
- Two Pointers5.0%
- Sorting4.2%
- Binary Search2.5%
- Prefix Sum2.5%
- Other (9)17.6%
How many questions involve each concept
Share of all 10 tracked Bcg questions that touch each concept. Questions usually involve several, so these overlap.
- Array60.0%
- Hash Table20.0%
- Math20.0%
- Simulation20.0%
- Sorting20.0%
- String20.0%
- Binary Search10.0%
- Binary Tree10.0%
- Bit Manipulation10.0%
- Breadth-First Search10.0%
- Counting10.0%
- Database10.0%
Where Bcg differs from the average company
Concept weight at Bcg relative to the average across all companies we track. Green means Bcg leans on it harder than most.
- Simulation3.4×
- Math2.2×
- Array1.3×
Bcg specialties
Concepts that show up at Bcg but are rarely asked elsewhere. They are easy to get blindsided by.
Difficulty mix
Level split of the 10 tracked Bcg questions.
- Junior30% (3)
- Mid/Senior50% (5)
- Staff20% (2)
Every concept in Bcg interviews
| Concept | Questions | % of questions | Share of mix |
|---|---|---|---|
| Array | 6 | 60.0% | 25.0% |
| Hash Table | 2 | 20.0% | 6.7% |
| Math | 2 | 20.0% | 12.5% |
| Simulation | 2 | 20.0% | 5.8% |
| Sorting | 2 | 20.0% | 4.2% |
| String | 2 | 20.0% | 8.3% |
| Binary Search | 1 | 10.0% | 2.5% |
| Binary Tree | 1 | 10.0% | 2.0% |
| Bit Manipulation | 1 | 10.0% | 2.0% |
| Breadth-First Search | 1 | 10.0% | 2.0% |
| Counting | 1 | 10.0% | 1.7% |
| Database | 1 | 10.0% | 10.0% |
| Depth-First Search | 1 | 10.0% | 2.0% |
| Greedy | 1 | 10.0% | 1.7% |
| Heap (Priority Queue) | 1 | 10.0% | 1.7% |
| Prefix Sum | 1 | 10.0% | 2.5% |
| Sliding Window | 1 | 10.0% | 2.5% |
| Tree | 1 | 10.0% | 2.0% |
| Two Pointers | 1 | 10.0% | 5.0% |
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