Duckduckgo LeetCode Interview Questions
Practice 33 real coding problems frequently asked in Duckduckgo technical interviews. Master these questions to ace your next Duckduckgo software engineering interview.
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Duckduckgo Interview Problems
| Problem | DifficultyDiff | Action |
|---|---|---|
Expression Add Operators 100% | HardH | Solve→ |
Minimum Path Sum 98% | MediumM | Solve→ |
Best Time to Buy and Sell Stock 90% | EasyE | Solve→ |
Regular Expression Matching 88% | HardH | Solve→ |
Plus One 84% | EasyE | Solve→ |
Open the Lock 82% | MediumM | Solve→ |
Populating Next Right Pointers in Each Node 78% | MediumM | Solve→ |
Find Median from Data Stream 77% | HardH | Solve→ |
Valid Sudoku 74% | MediumM | Solve→ |
Final Array State After K Multiplication Operations I 73% | EasyE | Solve→ |
Word Ladder 69% | HardH | Solve→ |
Diagonal Traverse 67% | MediumM | Solve→ |
Binary Tree Right Side View 64% | MediumM | Solve→ |
Missing Number 62% | EasyE | Solve→ |
Boundary of Binary Tree 62% | MediumM | Solve→ |
Length of Last Word 56% | EasyE | Solve→ |
Gas Station 55% | MediumM | Solve→ |
Two Sum 53% | EasyE | Solve→ |
LFU Cache 52% | HardH | Solve→ |
Design an Ordered Stream 48% | EasyE | Solve→ |
Pow(x, n) 47% | MediumM | Solve→ |
First Unique Character in a String 46% | EasyE | Solve→ |
Nested List Weight Sum 43% | MediumM | Solve→ |
Minimum Time to Visit a Cell In a Grid 42% | HardH | Solve→ |
Majority Element 42% | EasyE | Solve→ |
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Dot Product of Two Sparse Vectors 41% | MediumM | Solve→ |
Interval List Intersections 36% | MediumM | Solve→ |
Maximize Amount After Two Days of Conversions 33% | MediumM | Solve→ |
Task Scheduler 33% | MediumM | Solve→ |
Longest Increasing Subsequence 32% | MediumM | Solve→ |
Sort Colors 29% | MediumM | Solve→ |
Max Stack 20% | HardH | Solve→ |
Identify the Largest Outlier in an Array 20% | MediumM | Solve→ |
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Frequently Asked Questions
What LeetCode problems does Duckduckgo ask in interviews?
Duckduckgo commonly asks 33 coding problems in technical interviews, including Expression Add Operators, Minimum Path Sum, Best Time to Buy and Sell Stock. The difficulty breakdown is 9 Easy, 17 Medium, and 7 Hard problems.
How should I prepare for a Duckduckgo coding interview?
Focus on the most frequently asked problems first, especially those with high frequency scores. Duckduckgo interviews typically emphasize Array and Hash Table. Practice explaining your thought process while coding.
What is the difficulty level of Duckduckgo coding interviews?
Based on our data, Duckduckgo interviews include 9 Easy (27%), 17 Medium (52%), and 7 Hard (21%) problems.
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