Costar Group LeetCode Interview Questions
Practice 28 real coding problems frequently asked in Costar Group technical interviews. Master these questions to ace your next Costar Group software engineering interview.
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Costar Group Interview Problems
| Problem | DifficultyDiff | Action |
|---|---|---|
Palindrome Linked List 100% | EasyE | Solve→ |
Digit Operations to Make Two Integers Equal 98% | MediumM | Solve→ |
Check If N and Its Double Exist 95% | EasyE | Solve→ |
Custom Sort String 92% | MediumM | Solve→ |
The Earliest Moment When Everyone Become Friends 89% | MediumM | Solve→ |
Range Sum of BST 87% | EasyE | Solve→ |
Search in Rotated Sorted Array 82% | MediumM | Solve→ |
Clone Graph 72% | MediumM | Solve→ |
Valid Palindrome III 69% | HardH | Solve→ |
Basic Calculator II 68% | MediumM | Solve→ |
Word Pattern II 68% | MediumM | Solve→ |
Kth Missing Positive Number 65% | EasyE | Solve→ |
Shortest Palindrome 64% | HardH | Solve→ |
Valid Number 59% | HardH | Solve→ |
Diameter of Binary Tree 53% | EasyE | Solve→ |
Zero Array Transformation III 50% | MediumM | Solve→ |
Longest Substring Without Repeating Characters 49% | MediumM | Solve→ |
Diagonal Traverse 47% | MediumM | Solve→ |
House Robber II 46% | MediumM | Solve→ |
K-diff Pairs in an Array 44% | MediumM | Solve→ |
Convert Sorted List to Binary Search Tree 36% | MediumM | Solve→ |
Maximum Depth of Binary Tree 35% | EasyE | Solve→ |
Group Shifted Strings 28% | MediumM | Solve→ |
Valid Word Abbreviation 27% | EasyE | Solve→ |
Find Longest Self-Contained Substring 25% | HardH | Solve→ |
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Frequently Asked Questions
What LeetCode problems does Costar Group ask in interviews?
Costar Group commonly asks 28 coding problems in technical interviews, including Palindrome Linked List, Digit Operations to Make Two Integers Equal, Check If N and Its Double Exist. The difficulty breakdown is 7 Easy, 16 Medium, and 5 Hard problems.
How should I prepare for a Costar Group coding interview?
Focus on the most frequently asked problems first, especially those with high frequency scores. Costar Group interviews typically emphasize Array and String. Practice explaining your thought process while coding.
What is the difficulty level of Costar Group coding interviews?
Based on our data, Costar Group interviews include 7 Easy (25%), 16 Medium (57%), and 5 Hard (18%) problems.
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