Zscaler Coding Interview Questions
We track 17 coding questions asked at Zscaler, tagged with the algorithms and concepts they test. The most common: Array, Hash Table, Math, String, Greedy.
Browse all 17 Zscaler questions →Concept mix
Each question's weight is split evenly across its concepts, so the shares sum to 100%.
- Array17.7%
- Math12.2%
- String12.2%
- Hash Table8.8%
- Binary Search6.7%
- Greedy6.1%
- Sorting5.0%
- Trie4.9%
- Heap (Priority Queue)3.3%
- Bit Manipulation2.7%
- Other (10)20.5%
How many questions involve each concept
Share of all 17 tracked Zscaler questions that touch each concept. Questions usually involve several, so these overlap.
- Array47.1%
- Hash Table29.4%
- Math29.4%
- String29.4%
- Greedy17.6%
- Trie17.6%
- Binary Search11.8%
- Bit Manipulation11.8%
- Sliding Window11.8%
- Sorting11.8%
- Breadth-First Search5.9%
- Counting5.9%
Where Zscaler differs from the average company
Concept weight at Zscaler relative to the average across all companies we track. Green means Zscaler leans on it harder than most.
- Trie9.8×
- Binary Search2.2×
- Math2.2×
- Greedy2.0×
Zscaler specialties
Concepts that show up at Zscaler but are rarely asked elsewhere. They are easy to get blindsided by.
Difficulty mix
Level split of the 17 tracked Zscaler questions.
- Junior24% (4)
- Mid/Senior47% (8)
- Staff29% (5)
Every concept in Zscaler interviews
| Concept | Questions | % of questions | Share of mix |
|---|---|---|---|
| Array | 8 | 47.1% | 17.7% |
| Hash Table | 5 | 29.4% | 8.8% |
| Math | 5 | 29.4% | 12.2% |
| String | 5 | 29.4% | 12.2% |
| Greedy | 3 | 17.6% | 6.1% |
| Trie | 3 | 17.6% | 4.9% |
| Binary Search | 2 | 11.8% | 6.7% |
| Bit Manipulation | 2 | 11.8% | 2.7% |
| Sliding Window | 2 | 11.8% | 2.7% |
| Sorting | 2 | 11.8% | 5.0% |
| Breadth-First Search | 1 | 5.9% | 2.2% |
| Counting | 1 | 5.9% | 1.7% |
| Design | 1 | 5.9% | 1.7% |
| Doubly-Linked List | 1 | 5.9% | 1.7% |
| Enumeration | 1 | 5.9% | 2.2% |
| Heap (Priority Queue) | 1 | 5.9% | 3.3% |
| Linked List | 1 | 5.9% | 1.7% |
| Matrix | 1 | 5.9% | 2.2% |
| Recursion | 1 | 5.9% | 2.2% |
| Simulation | 1 | 5.9% | 2.2% |
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