Expedia Coding Interview Questions
We track 54 coding questions asked at Expedia, tagged with the algorithms and concepts they test. The most common: Array, String, Hash Table, Greedy, Sorting.
Browse all 54 Expedia questions →Concept mix
Each question's weight is split evenly across its concepts, so the shares sum to 100%.
- String18.4%
- Array17.2%
- Hash Table9.2%
- Greedy5.8%
- Sorting5.2%
- Dynamic Programming4.4%
- Two Pointers4.2%
- Stack3.9%
- Math3.1%
- Prefix Sum2.5%
- Other (27)26.4%
How many questions involve each concept
Share of all 54 tracked Expedia questions that touch each concept. Questions usually involve several, so these overlap.
- Array50.0%
- String40.7%
- Hash Table29.6%
- Greedy20.4%
- Sorting18.5%
- Two Pointers14.8%
- Dynamic Programming13.0%
- Stack13.0%
- Breadth-First Search9.3%
- Heap (Priority Queue)9.3%
- Math9.3%
- Depth-First Search7.4%
Where Expedia differs from the average company
Concept weight at Expedia relative to the average across all companies we track. Green means Expedia leans on it harder than most.
- Doubly-Linked List3.0×
- Monotonic Stack2.1×
- String1.9×
- Greedy1.9×
- Counting0.60×
- Binary Search0.57×
- Math0.55×
- Linked List0.43×
Expedia specialties
Concepts that show up at Expedia but are rarely asked elsewhere. They are easy to get blindsided by.
Difficulty mix
Level split of the 54 tracked Expedia questions.
- Junior24% (13)
- Mid/Senior61% (33)
- Staff15% (8)
Every concept in Expedia interviews
| Concept | Questions | % of questions | Share of mix |
|---|---|---|---|
| Array | 27 | 50.0% | 17.2% |
| String | 22 | 40.7% | 18.4% |
| Hash Table | 16 | 29.6% | 9.2% |
| Greedy | 11 | 20.4% | 5.8% |
| Sorting | 10 | 18.5% | 5.2% |
| Two Pointers | 8 | 14.8% | 4.2% |
| Dynamic Programming | 7 | 13.0% | 4.4% |
| Stack | 7 | 13.0% | 3.9% |
| Breadth-First Search | 5 | 9.3% | 2.3% |
| Heap (Priority Queue) | 5 | 9.3% | 2.1% |
| Math | 5 | 9.3% | 3.1% |
| Depth-First Search | 4 | 7.4% | 1.5% |
| Matrix | 4 | 7.4% | 2.0% |
| Binary Search | 3 | 5.6% | 1.7% |
| Design | 3 | 5.6% | 1.4% |
| Monotonic Stack | 3 | 5.6% | 1.5% |
| Prefix Sum | 3 | 5.6% | 2.5% |
| Sliding Window | 3 | 5.6% | 1.6% |
| Backtracking | 2 | 3.7% | 1.2% |
| Counting | 2 | 3.7% | 0.6% |
| Doubly-Linked List | 2 | 3.7% | 0.9% |
| Linked List | 2 | 3.7% | 0.9% |
| Simulation | 2 | 3.7% | 1.9% |
| Union-Find | 2 | 3.7% | 0.7% |
| Binary Search Tree | 1 | 1.9% | 0.5% |
| Binary Tree | 1 | 1.9% | 0.5% |
| Bit Manipulation | 1 | 1.9% | 0.4% |
| Graph Theory | 1 | 1.9% | 0.3% |
| Memoization | 1 | 1.9% | 0.4% |
| Monotonic Queue | 1 | 1.9% | 0.4% |
| Number Theory | 1 | 1.9% | 0.9% |
| Ordered Set | 1 | 1.9% | 0.5% |
| Queue | 1 | 1.9% | 0.4% |
| Recursion | 1 | 1.9% | 0.4% |
| Shortest Path | 1 | 1.9% | 0.3% |
| String Matching | 1 | 1.9% | 0.6% |
| Tree | 1 | 1.9% | 0.5% |
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