R3 LeetCode Interview Questions
Practice 26 real coding problems frequently asked in R3 technical interviews. Master these questions to ace your next R3 software engineering interview.
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R3 Interview Problems
| Problem | DifficultyDiff | Action |
|---|---|---|
Insert Delete GetRandom O(1) 100% | MediumM | Solve→ |
Kth Smallest Element in a BST 93% | MediumM | Solve→ |
Palindrome Linked List 84% | EasyE | Solve→ |
Min Stack 81% | MediumM | Solve→ |
Binary Tree Maximum Path Sum 81% | HardH | Solve→ |
Flip Columns For Maximum Number of Equal Rows 78% | MediumM | Solve→ |
Remove All Adjacent Duplicates In String 72% | EasyE | Solve→ |
Toeplitz Matrix 71% | EasyE | Solve→ |
Dot Product of Two Sparse Vectors 65% | MediumM | Solve→ |
Find Peak Element 57% | MediumM | Solve→ |
Valid Palindrome 56% | EasyE | Solve→ |
Combination Sum 52% | MediumM | Solve→ |
Convert Binary Search Tree to Sorted Doubly Linked List 50% | MediumM | Solve→ |
LRU Cache 49% | MediumM | Solve→ |
Reverse Words in a String 48% | MediumM | Solve→ |
Create Hello World Function 43% | EasyE | Solve→ |
IP to CIDR 42% | MediumM | Solve→ |
Search Suggestions System 39% | MediumM | Solve→ |
Two City Scheduling 39% | MediumM | Solve→ |
Insert Delete GetRandom O(1) - Duplicates allowed 36% | HardH | Solve→ |
Decode String 35% | MediumM | Solve→ |
Valid Word Abbreviation 35% | EasyE | Solve→ |
Maximum Number of Events That Can Be Attended 30% | MediumM | Solve→ |
Custom Sort String 27% | MediumM | Solve→ |
Analyze User Website Visit Pattern 23% | MediumM | Solve→ |
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Moving Average from Data Stream 22% | EasyE | Solve→ |
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Frequently Asked Questions
What LeetCode problems does R3 ask in interviews?
R3 commonly asks 26 coding problems in technical interviews, including Insert Delete GetRandom O(1), Kth Smallest Element in a BST, Palindrome Linked List. The difficulty breakdown is 7 Easy, 17 Medium, and 2 Hard problems.
How should I prepare for a R3 coding interview?
Focus on the most frequently asked problems first, especially those with high frequency scores. R3 interviews typically emphasize Array and String. Practice explaining your thought process while coding.
What is the difficulty level of R3 coding interviews?
Based on our data, R3 interviews include 7 Easy (27%), 17 Medium (65%), and 2 Hard (8%) problems.
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