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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31.8K views•6mo ago
Implement a Trie with Deletion
Data Structures
Asked at Microsoft
Hard
27.1K Users PracticedPractice with This Question
138.6K views•6mo ago
Design a Graph for Social Networking
Data Structures
Asked at Meta
Medium
117.8K Users PracticedPractice with This Question
57K views•6mo ago
Design a Calendar Scheduling System (Interval Tree)
Data Structures
Asked at Apple
Hard
48.5K Users PracticedPractice with This Question
109.3K views•6mo ago
Design a Data Structure for Stock Prices (Heaps)
Data Structures
Asked at Netflix
Medium
92.9K Users PracticedPractice with This Question
95.4K views•6mo ago
Design a Simple ERP System Data Model
Data Structures
Asked at Salesforce
Medium
81.1K Users PracticedPractice with This Question
129.1K views•6mo ago
Design a Hash Set from Scratch
Data Structures
Asked at Uber
Easy
109.7K Users PracticedPractice with This Question
78.8K views•6mo ago
Implement a Red-Black Tree (Conceptual)
Data Structures
Asked at Tesla
Hard
67K Users PracticedPractice with This Question
116.9K views•6mo ago
Maximum Number of Eaten Apples (Priority Queue)
Data Structures
Asked at Airbnb
Medium
99.3K Users PracticedPractice with This Question
67.6K views•6mo ago
Check if Two Trees are Identical
Data Structures
Asked at Spotify
Easy
57.5K Users PracticedPractice with This Question
97.3K views•6mo ago
Design a Set with $O(1)$ `insert`, `remove`, and `getRandom`
Data Structures
Asked at Google
Medium
82.7K Users PracticedPractice with This Question