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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65.3K views•6mo ago
Find the Middle of a Linked List (No length)
Data Structures
Asked at Google
Easy
55.5K Users PracticedPractice with This Question
131.4K views•6mo ago
Word Ladder (BFS)
Data Structures
Asked at Meta
Hard
111.7K Users PracticedPractice with This Question
51.1K views•6mo ago
Implement a Queue using a Circular Array
Data Structures
Asked at Microsoft
Medium
43.5K Users PracticedPractice with This Question
101K views•6mo ago
Remove Duplicates from Sorted List
Data Structures
Asked at Amazon
Easy
85.9K Users PracticedPractice with This Question
71.7K views•6mo ago
Design a Simple LFU Cache (Conceptual)
Data Structures
Asked at Apple
Hard
60.9K Users PracticedPractice with This Question
35.2K views•6mo ago
Insert into a Max Heap
Data Structures
Asked at Uber
Easy
30K Users PracticedPractice with This Question
71K views•6mo ago
Word Dictionary with Wildcards (Trie)
Data Structures
Asked at IBM
Hard
60.4K Users PracticedPractice with This Question
99.2K views•6mo ago
Check if Linked List is a Palindrome
Data Structures
Asked at Cisco
Medium
84.3K Users PracticedPractice with This Question
132.7K views•6mo ago
Design a Priority Queue using an Array
Data Structures
Asked at Oracle
Easy
112.8K Users PracticedPractice with This Question
85.7K views•6mo ago
Balanced Parentheses (Generative)
Data Structures
Asked at Google
Medium
72.8K Users PracticedPractice with This Question