Rakuten Coding Interview Questions
We track 8 coding questions asked at Rakuten, tagged with the algorithms and concepts they test. The most common: Array, Hash Table, Math, Matrix, String.
Browse all 8 Rakuten questions →Concept mix
Each question's weight is split evenly across its concepts, so the shares sum to 100%.
- Array18.8%
- String10.4%
- Two Pointers10.4%
- Math8.3%
- Matrix8.3%
- Hash Table7.3%
- Backtracking6.2%
- Breadth-First Search4.2%
- Dynamic Programming4.2%
- Memoization4.2%
- Other (5)17.7%
How many questions involve each concept
Share of all 8 tracked Rakuten questions that touch each concept. Questions usually involve several, so these overlap.
- Array50.0%
- Hash Table25.0%
- Math25.0%
- Matrix25.0%
- String25.0%
- Two Pointers25.0%
- Backtracking12.5%
- Breadth-First Search12.5%
- Design12.5%
- Doubly-Linked List12.5%
- Dynamic Programming12.5%
- Linked List12.5%
Where Rakuten differs from the average company
Concept weight at Rakuten relative to the average across all companies we track. Green means Rakuten leans on it harder than most.
- Matrix3.6×
- Two Pointers2.9×
- Math1.5×
Rakuten specialties
Concepts that show up at Rakuten but are rarely asked elsewhere. They are easy to get blindsided by.
Difficulty mix
Level split of the 8 tracked Rakuten questions.
- Junior13% (1)
- Mid/Senior88% (7)
Every concept in Rakuten interviews
| Concept | Questions | % of questions | Share of mix |
|---|---|---|---|
| Array | 4 | 50.0% | 18.8% |
| Hash Table | 2 | 25.0% | 7.3% |
| Math | 2 | 25.0% | 8.3% |
| Matrix | 2 | 25.0% | 8.3% |
| String | 2 | 25.0% | 10.4% |
| Two Pointers | 2 | 25.0% | 10.4% |
| Backtracking | 1 | 12.5% | 6.2% |
| Breadth-First Search | 1 | 12.5% | 4.2% |
| Design | 1 | 12.5% | 3.1% |
| Doubly-Linked List | 1 | 12.5% | 3.1% |
| Dynamic Programming | 1 | 12.5% | 4.2% |
| Linked List | 1 | 12.5% | 3.1% |
| Memoization | 1 | 12.5% | 4.2% |
| Sliding Window | 1 | 12.5% | 4.2% |
| Sorting | 1 | 12.5% | 4.2% |
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