DuolingoLeetCode Questions
VerifiedCompany-wise coding interview questions asked by Duolingo, ranked by real frequency across 30-day, 3-month, and 6-month recency windows.
# | Problem | Difficulty | Frequency↓ | Acceptance | |
|---|---|---|---|---|---|
| #2227 | Encrypt and Decrypt Strings3 sources | Hard | 100% | 38.7% | |
| #2090 | K Radius Subarray Averages3 sources | Medium | 88% | 46.4% | |
| #1733 | Minimum Number of People to Teach3 sources | Medium | 88% | 67.3% | |
| #329 | Longest Increasing Path in a Matrix3 sources | Hard | 75% | 56.8% | |
| #2365 | Task Scheduler II3 sources | Medium | 68% | 54.9% |
Duolingo Technical Interview Overview & Company-Wise Questions
Software engineering and technical interviews at Duolingo emphasize real-world problem solving, algorithmic efficiency, and scalable data structure design. The curated dataset above contains 5 verified LeetCode problems, categorized by frequency and filtered across recent interview seasons.
Frequently Asked Questions
What are the top LeetCode questions for Duolingo?
Leading questions include Encrypt and Decrypt Strings, K Radius Subarray Averages, Minimum Number of People to Teach. Reviewing questions with higher recency (within the last 30 to 90 days) yields the highest return on preparation time.
Where can I practice company-wise LeetCode questions for Duolingo?
You can practice all 5 Duolingo LeetCode questions right here on LeetMap Pro. Filter by 30-day, 3-month, and 6-month recency, track your progress with local checkpoints, and practice curated SQL problems completely free.
How should I prepare for Duolingo coding rounds?
Begin by reviewing Medium-difficulty problems (3 tracked), which constitute the majority of technical rounds. Complement coding practice with foundational DSA patterns like Sliding Window, Two Pointers, and Graph Traversal.