Qualcomm Coding Interview Questions
We track 57 coding questions asked at Qualcomm, tagged with the algorithms and concepts they test. The most common: Array, Two Pointers, String, Linked List, Math.
Browse all 57 Qualcomm questions →Concept mix
Each question's weight is split evenly across its concepts, so the shares sum to 100%.
- Array14.0%
- String11.4%
- Two Pointers9.6%
- Math8.0%
- Linked List6.3%
- Dynamic Programming4.7%
- Bit Manipulation4.7%
- Recursion4.7%
- Hash Table4.2%
- Divide and Conquer3.5%
- Other (28)29.1%
How many questions involve each concept
Share of all 57 tracked Qualcomm questions that touch each concept. Questions usually involve several, so these overlap.
- Array40.4%
- Two Pointers24.6%
- String21.1%
- Linked List15.8%
- Math15.8%
- Hash Table14.0%
- Dynamic Programming12.3%
- Bit Manipulation10.5%
- Design10.5%
- Divide and Conquer10.5%
- Recursion10.5%
- Sorting10.5%
Where Qualcomm differs from the average company
Concept weight at Qualcomm relative to the average across all companies we track. Green means Qualcomm leans on it harder than most.
- Divide and Conquer4.4×
- Recursion4.3×
- Queue4.0×
- Linked List3.0×
- Hash Table0.63×
- Matrix0.61×
- Binary Tree0.54×
- Tree0.47×
Qualcomm specialties
Concepts that show up at Qualcomm but are rarely asked elsewhere. They are easy to get blindsided by.
Difficulty mix
Level split of the 57 tracked Qualcomm questions.
- Junior44% (25)
- Mid/Senior42% (24)
- Staff14% (8)
Every concept in Qualcomm interviews
| Concept | Questions | % of questions | Share of mix |
|---|---|---|---|
| Array | 23 | 40.4% | 14.0% |
| Two Pointers | 14 | 24.6% | 9.6% |
| String | 12 | 21.1% | 11.4% |
| Linked List | 9 | 15.8% | 6.3% |
| Math | 9 | 15.8% | 8.0% |
| Hash Table | 8 | 14.0% | 4.2% |
| Dynamic Programming | 7 | 12.3% | 4.7% |
| Bit Manipulation | 6 | 10.5% | 4.7% |
| Design | 6 | 10.5% | 2.8% |
| Divide and Conquer | 6 | 10.5% | 3.5% |
| Recursion | 6 | 10.5% | 4.7% |
| Sorting | 6 | 10.5% | 3.2% |
| Breadth-First Search | 5 | 8.8% | 2.0% |
| Depth-First Search | 4 | 7.0% | 1.5% |
| Stack | 4 | 7.0% | 2.4% |
| Binary Search | 3 | 5.3% | 1.9% |
| Heap (Priority Queue) | 3 | 5.3% | 1.2% |
| Matrix | 3 | 5.3% | 1.4% |
| Queue | 3 | 5.3% | 1.6% |
| Backtracking | 2 | 3.5% | 1.5% |
| Binary Tree | 2 | 3.5% | 0.7% |
| Counting | 2 | 3.5% | 0.7% |
| Tree | 2 | 3.5% | 0.7% |
| Doubly-Linked List | 1 | 1.8% | 0.4% |
| Geometry | 1 | 1.8% | 0.9% |
| Graph Theory | 1 | 1.8% | 0.4% |
| Greedy | 1 | 1.8% | 0.6% |
| Memoization | 1 | 1.8% | 0.6% |
| Merge Sort | 1 | 1.8% | 0.4% |
| Monotonic Stack | 1 | 1.8% | 0.4% |
| Number Theory | 1 | 1.8% | 0.4% |
| Prefix Sum | 1 | 1.8% | 0.6% |
| Quickselect | 1 | 1.8% | 0.4% |
| Simulation | 1 | 1.8% | 0.4% |
| Sliding Window | 1 | 1.8% | 0.6% |
| String Matching | 1 | 1.8% | 0.6% |
| Topological Sort | 1 | 1.8% | 0.4% |
| Union-Find | 1 | 1.8% | 0.4% |
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