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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75K views•6mo ago
Design a Time Map (TreeMap/Sorted Map)
Data Structures
Asked at Google
Medium
63.8K Users PracticedPractice with This Question
75.7K views•6mo ago
Implement a Map with Time Expiration
Data Structures
Asked at Uber
Hard
64.3K Users PracticedPractice with This Question
133K views•6mo ago
Number of Operations to Make Network Connected (Union-Find)
Data Structures
Asked at Salesforce
Medium
113.1K Users PracticedPractice with This Question
28K views•6mo ago
Design a File System (Hash Map and Set)
Data Structures
Asked at Amazon
Medium
23.8K Users PracticedPractice with This Question
111K views•6mo ago
Binary Tree Zigzag Level Order Traversal
Data Structures
Asked at Google
Medium
94.3K Users PracticedPractice with This Question
60.5K views•6mo ago
Design a Data Stream Median Finder
Data Structures
Asked at Microsoft
Hard
51.4K Users PracticedPractice with This Question
79.5K views•6mo ago
Implement a Generic Graph Structure
Data Structures
Asked at Stripe
Medium
67.6K Users PracticedPractice with This Question
66K views•6mo ago
Word Search (Trie & Backtracking)
Data Structures
Asked at Uber
Medium
56.1K Users PracticedPractice with This Question
71.5K views•6mo ago
Convert BST to Greater Tree
Data Structures
Asked at Google
Medium
60.8K Users PracticedPractice with This Question
139.2K views•6mo ago
Insert into a Binary Search Tree
Data Structures
Asked at Netflix
Easy
118.3K Users PracticedPractice with This Question