Ixl Coding Interview Questions
We track 17 coding questions asked at Ixl, tagged with the algorithms and concepts they test. The most common: Array, Math, String, Hash Table, Sorting.
Browse all 17 Ixl questions →Concept mix
Each question's weight is split evenly across its concepts, so the shares sum to 100%.
- Array22.9%
- Math10.6%
- String9.1%
- Sorting6.5%
- Hash Table6.2%
- Binary Search6.2%
- Stack3.6%
- Linked List3.1%
- Heap (Priority Queue)2.8%
- Two Pointers2.8%
- Other (18)26.4%
How many questions involve each concept
Share of all 17 tracked Ixl questions that touch each concept. Questions usually involve several, so these overlap.
- Array47.1%
- Math29.4%
- String29.4%
- Hash Table23.5%
- Sorting17.6%
- Binary Search11.8%
- Design11.8%
- Heap (Priority Queue)11.8%
- Linked List11.8%
- Stack11.8%
- Two Pointers11.8%
- Backtracking5.9%
Where Ixl differs from the average company
Concept weight at Ixl relative to the average across all companies we track. Green means Ixl leans on it harder than most.
- Binary Search2.1×
- Design1.9×
- Math1.9×
- Heap (Priority Queue)1.9×
- Two Pointers0.78×
Ixl specialties
Concepts that show up at Ixl but are rarely asked elsewhere. They are easy to get blindsided by.
Difficulty mix
Level split of the 17 tracked Ixl questions.
- Junior18% (3)
- Mid/Senior65% (11)
- Staff18% (3)
Every concept in Ixl interviews
| Concept | Questions | % of questions | Share of mix |
|---|---|---|---|
| Array | 8 | 47.1% | 22.9% |
| Math | 5 | 29.4% | 10.6% |
| String | 5 | 29.4% | 9.1% |
| Hash Table | 4 | 23.5% | 6.2% |
| Sorting | 3 | 17.6% | 6.5% |
| Binary Search | 2 | 11.8% | 6.2% |
| Design | 2 | 11.8% | 2.5% |
| Heap (Priority Queue) | 2 | 11.8% | 2.8% |
| Linked List | 2 | 11.8% | 3.1% |
| Stack | 2 | 11.8% | 3.6% |
| Two Pointers | 2 | 11.8% | 2.8% |
| Backtracking | 1 | 5.9% | 0.8% |
| Bit Manipulation | 1 | 5.9% | 0.8% |
| Bitmask | 1 | 5.9% | 0.8% |
| Breadth-First Search | 1 | 5.9% | 1.6% |
| Counting | 1 | 5.9% | 2.1% |
| Data Stream | 1 | 5.9% | 1.2% |
| Depth-First Search | 1 | 5.9% | 1.6% |
| Divide and Conquer | 1 | 5.9% | 1.6% |
| Dynamic Programming | 1 | 5.9% | 0.8% |
| Graph Theory | 1 | 5.9% | 1.6% |
| Greedy | 1 | 5.9% | 2.1% |
| Memoization | 1 | 5.9% | 0.8% |
| Merge Sort | 1 | 5.9% | 1.6% |
| Randomized | 1 | 5.9% | 1.2% |
| Recursion | 1 | 5.9% | 1.6% |
| Simulation | 1 | 5.9% | 2.1% |
| Topological Sort | 1 | 5.9% | 1.6% |
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