Illumina LeetCode Interview Questions
Practice 28 real coding problems frequently asked in Illumina technical interviews. Master these questions to ace your next Illumina software engineering interview.
Top Topics at Illumina
Ace your Illumina interview with AI
Get real-time AI assistance during your actual interview. Invisible to screensharing.
Illumina Interview Problems
| Problem | DifficultyDiff | Action |
|---|---|---|
Minimum Window Substring 100% | HardH | Solve→ |
Integer to Roman 100% | MediumM | Solve→ |
N-Queens 83% | HardH | Solve→ |
Insert into a Sorted Circular Linked List 77% | MediumM | Solve→ |
Bus Routes 76% | HardH | Solve→ |
Minimum Absolute Difference 74% | EasyE | Solve→ |
Basic Calculator 74% | HardH | Solve→ |
Daily Temperatures 73% | MediumM | Solve→ |
Minimum Area Rectangle 66% | MediumM | Solve→ |
Walls and Gates 65% | MediumM | Solve→ |
Toeplitz Matrix 64% | EasyE | Solve→ |
Find Score of an Array After Marking All Elements 61% | MediumM | Solve→ |
Maximum Product Subarray 60% | MediumM | Solve→ |
Convert Binary Search Tree to Sorted Doubly Linked List 57% | MediumM | Solve→ |
Design HashMap 51% | EasyE | Solve→ |
Identify the Largest Outlier in an Array 50% | MediumM | Solve→ |
Ransom Note 45% | EasyE | Solve→ |
Spiral Matrix 42% | MediumM | Solve→ |
Adding Spaces to a String 40% | MediumM | Solve→ |
Custom Sort String 39% | MediumM | Solve→ |
Binary Tree Right Side View 38% | MediumM | Solve→ |
Trips and Users 34% | HardH | Solve→ |
Longest Subarray of 1's After Deleting One Element 34% | MediumM | Solve→ |
Subarray Sum Equals K 32% | MediumM | Solve→ |
Sort Colors 28% | MediumM | Solve→ |
Pass your interview with AI assistance
Get real-time solutions during your actual coding interview. Invisible to screensharing.
Similar Companies
Explore interview questions from other companies with similar interview patterns.
Frequently Asked Questions
What LeetCode problems does Illumina ask in interviews?
Illumina commonly asks 28 coding problems in technical interviews, including Minimum Window Substring, Integer to Roman, N-Queens. The difficulty breakdown is 5 Easy, 17 Medium, and 6 Hard problems.
How should I prepare for a Illumina coding interview?
Focus on the most frequently asked problems first, especially those with high frequency scores. Illumina interviews typically emphasize Array and Hash Table. Practice explaining your thought process while coding.
What is the difficulty level of Illumina coding interviews?
Based on our data, Illumina interviews include 5 Easy (18%), 17 Medium (61%), and 6 Hard (21%) problems.
Ready to ace your Illumina interview?
Join thousands of engineers who landed offers at top tech companies.
Get Started FreeNo credit card required