Most of the coding interviews are mainly comprised of Data Structure and algorithms questions because these topics are very basic and every computer science graduate is supposed to know these topics.

There is another reason for asking questions from Data Structure and Algorithm, for many tech giants having knowledge of a specific programming language could be irrelevant because the programming language could be obsolete with time, but data structure and algorithms remain the same.

List of Data Structure Interview Questions

Here I have compiled frequently asked interview questions. Find out their answers from this blog to data structures and algorithms interview questions.

1. What is a data structure?
2. What is the key difference between a file structure and a storage structure?
3. What are all the basic operations that we can use in data structures?
4. When can I use binary search on a data structure?
5. What is the key difference between Breadth-First Search and Depth First Search?
6. What is a linked list?
7. What is a stack and what are its applications?
8. How can we walk through the array?
9. What is a queue and how is it different from a stack?
10. What are arrays?
11. Where do we use the data structure?
12. What do you mean by LIFO and FIFO?
13. What are binary trees?
14. What is heap allocation and how does it help with data management?
15. What data structure does Recursion use to accomplish its task?
16. What is a Binary Search Tree?
17. What is the key difference between NULL and Void?
18. What are multidimensional arrays?
19. What is the difference between PUSH and POP?
20. What is an ordered list?
21. How does the declaration of a variable affect memory allocation?
22. What are linear and non-linear data structures?
23. What is merge sort?
24. Explain data abstraction and how is it different from data encapsulation?
25. What are the main advantages of a linked list over an array?
26. How can you insert a new item into a Binary Search Tree?
27. What is Linear Search?
28. How does selective sorting in an array work?
29. What is the advantage of the heap over the stack?
30. Explain recursion and what measures to consider when creating a recursive function.

Conclusion

Here we have given the most frequent Data Structure interview questions; we suggest you essentially go through these questions before you go for a technical interview.