Zeta Coding Interview Questions
We track 32 coding questions asked at Zeta, tagged with the algorithms and concepts they test. The most common: Array, Dynamic Programming, String, Hash Table, Binary Search.
Browse all 32 Zeta questions →Concept mix
Each question's weight is split evenly across its concepts, so the shares sum to 100%.
- Array17.8%
- Dynamic Programming14.7%
- String10.8%
- Hash Table4.8%
- Binary Search4.6%
- Sorting4.3%
- Stack4.1%
- Greedy3.3%
- Monotonic Stack3.1%
- Sliding Window2.7%
- Other (27)29.6%
How many questions involve each concept
Share of all 32 tracked Zeta questions that touch each concept. Questions usually involve several, so these overlap.
- Array65.6%
- Dynamic Programming46.9%
- String31.2%
- Hash Table21.9%
- Binary Search15.6%
- Greedy15.6%
- Sorting15.6%
- Stack15.6%
- Heap (Priority Queue)12.5%
- Monotonic Stack12.5%
- Depth-First Search9.4%
- Memoization9.4%
Where Zeta differs from the average company
Concept weight at Zeta relative to the average across all companies we track. Green means Zeta leans on it harder than most.
- Memoization7.0×
- Monotonic Stack4.4×
- Divide and Conquer2.6×
- Dynamic Programming2.4×
- Hash Table0.72×
- Two Pointers0.39×
- Math0.30×
Zeta specialties
Concepts that show up at Zeta but are rarely asked elsewhere. They are easy to get blindsided by.
Difficulty mix
Level split of the 32 tracked Zeta questions.
- Mid/Senior63% (20)
- Staff38% (12)
Every concept in Zeta interviews
| Concept | Questions | % of questions | Share of mix |
|---|---|---|---|
| Array | 21 | 65.6% | 17.8% |
| Dynamic Programming | 15 | 46.9% | 14.7% |
| String | 10 | 31.2% | 10.8% |
| Hash Table | 7 | 21.9% | 4.8% |
| Binary Search | 5 | 15.6% | 4.6% |
| Greedy | 5 | 15.6% | 3.3% |
| Sorting | 5 | 15.6% | 4.3% |
| Stack | 5 | 15.6% | 4.1% |
| Heap (Priority Queue) | 4 | 12.5% | 2.3% |
| Monotonic Stack | 4 | 12.5% | 3.1% |
| Depth-First Search | 3 | 9.4% | 2.2% |
| Memoization | 3 | 9.4% | 2.1% |
| Sliding Window | 3 | 9.4% | 2.7% |
| Binary Tree | 2 | 6.2% | 1.8% |
| Divide and Conquer | 2 | 6.2% | 2.1% |
| Graph Theory | 2 | 6.2% | 1.0% |
| Math | 2 | 6.2% | 1.7% |
| Prefix Sum | 2 | 6.2% | 1.7% |
| Tree | 2 | 6.2% | 1.8% |
| Two Pointers | 2 | 6.2% | 1.4% |
| Backtracking | 1 | 3.1% | 0.5% |
| Bit Manipulation | 1 | 3.1% | 0.5% |
| Bitmask | 1 | 3.1% | 0.5% |
| Breadth-First Search | 1 | 3.1% | 0.4% |
| Counting | 1 | 3.1% | 0.5% |
| Design | 1 | 3.1% | 0.6% |
| Game Theory | 1 | 3.1% | 1.0% |
| Linked List | 1 | 3.1% | 1.6% |
| Matrix | 1 | 3.1% | 0.6% |
| Monotonic Queue | 1 | 3.1% | 0.6% |
| Ordered Set | 1 | 3.1% | 0.4% |
| Queue | 1 | 3.1% | 0.6% |
| Randomized | 1 | 3.1% | 0.6% |
| Recursion | 1 | 3.1% | 1.6% |
| Topological Sort | 1 | 3.1% | 0.6% |
| Trie | 1 | 3.1% | 0.5% |
| Union-Find | 1 | 3.1% | 0.4% |
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