Common Interview Questions and Answers
Practice the most frequently asked interview questions with expert answers, approach tips, and AI-powered feedback.
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71.1K views•6mo ago
Clone Graph
Data Structures
Asked at Salesforce
Medium
60.5K Users PracticedPractice with This Question
48.1K views•6mo ago
Implement HashMap with Separate Chaining
Data Structures
Asked at Amazon
Hard
40.9K Users PracticedPractice with This Question
136.9K views•6mo ago
Design a Doubly Linked List with Head and Tail
Data Structures
Asked at Microsoft
Medium
116.4K Users PracticedPractice with This Question
130.1K views•6mo ago
Design a Set Data Structure
Data Structures
Asked at Meta
Easy
110.6K Users PracticedPractice with This Question
89.8K views•6mo ago
Implement a Circular Buffer/Ring Buffer
Data Structures
Asked at Apple
Medium
76.3K Users PracticedPractice with This Question
38.3K views•6mo ago
Design a Sparse Vector/Matrix
Data Structures
Asked at Stripe
Medium
32.5K Users PracticedPractice with This Question
31.9K views•6mo ago
Path Sum III (Path in Tree)
Data Structures
Asked at Google
Hard
27.1K Users PracticedPractice with This Question
24.5K views•6mo ago
Design a Word Filter (Prefix/Suffix Search)
Data Structures
Asked at Uber
Hard
20.8K Users PracticedPractice with This Question
136.7K views•6mo ago
Design a Distributed Unique ID Generator
Data Structures
Asked at Tesla
Medium
116.2K Users PracticedPractice with This Question
69.8K views•6mo ago
Implement a Min Heap
Data Structures
Asked at Cisco
Medium
59.4K Users PracticedPractice with This Question