Common Interview Questions and Answers
Practice the most frequently asked interview questions with expert answers, approach tips, and AI-powered feedback.
40K views•5mo ago
Find Subtree with Maximum Average
Data Structures
Asked at Meta
Medium
34K Users PracticedPractice with This Question
137.6K views•5mo ago
Implement a Dynamic Array/Vector
Data Structures
Asked at Microsoft
Easy
116.9K Users PracticedPractice with This Question
27.4K views•5mo ago
Minimum Depth of Binary Tree
Data Structures
Asked at Amazon
Easy
23.3K Users PracticedPractice with This Question
94.2K views•5mo ago
Design a Phone Directory (Set/Trie)
Data Structures
Asked at Stripe
Medium
80.1K Users PracticedPractice with This Question
108.7K views•5mo ago
Design a Word Dictionary with Wildcards
Data Structures
Asked at Uber
Hard
92.4K Users PracticedPractice with This Question
110.6K views•5mo ago
Implement a Deque (Double-Ended Queue)
Data Structures
Asked at IBM
Medium
94K Users PracticedPractice with This Question
76.8K views•5mo ago
Shortest Path in Binary Matrix (BFS)
Data Structures
Asked at LinkedIn
Medium
65.3K Users PracticedPractice with This Question
32.3K views•5mo ago
Course Schedule (Adjacency List & BFS)
Data Structures
Asked at Cisco
Medium
27.5K Users PracticedPractice with This Question
40.8K views•5mo ago
Find Duplicate Subtrees
Data Structures
Asked at Meta
Hard
34.6K Users PracticedPractice with This Question
86.9K views•5mo ago
Design a Simple LRU Cache using Python/Java built-ins
Data Structures
Asked at Google
Easy
73.8K Users PracticedPractice with This Question