This video by Simplilearn will explain to you on Top 10 DSA Interview Questions And Answers 2023. DSA For Freshers And Experienced Tutorial will explain to you the data structure interview questions. These top 10 data structures and algorithms-based interview questions are asked most frequently in major MNCs. This quick session on Data Structures and Algo Questions will keep you on the safer side while attending the interviews of your dream company. -Data structures and algorithms questions are vital in every software development interview. They have become essential to crack every software engineer to get hired by top tech companies like Accenture, TCS, Infosys, Amazon, and many more. A few top 10 most frequently asked data structures questions are: ✅ 00:00 DSA interview questions and answers ✅ 1:18 - Implement a program to Reverse a string using a stack As we all know, stack follows the first in, last out principle; in order to reverse a string ✅ 4:36 - Sort an array using a quick sort algorithm Quick sort algorithm helps to search the information faster than any other sorting algorithm. It is widely used to sort the elements faster. Also, memory storage is utilized efficiently since no additional storage is required. ✅ 8:57 -Write a program to find the smallest and largest number in a given array. The array is used to store multiple data of the same type, easily allowing random access to an element using the index number. ✅ 10:49 - Implement a c program to create a singly linked list of n nodes and count the number of nodes. In a singly linked list, we can access the elements easily because of the pointer variable that points to the address of the next node in the list. ✅ 14:34 - Write a c code to remove the node from a given position. A doubly linked list allows you to traverse in both directions. Since it uses two pointers to point to the address of the previous and next node. It is easy to access the node using the previous pointer and delete the node from the list. ✅ 22:14 - Perform pre-order traversal of a tree data structure ✅ 27:46 - Implement a C program to add a node to the beginning of a circular singly linked list. ✅ 30:34 - Write a recursive program to count the number of nodes in a binary tree. 🔥Explore Our Free Courses With Completion Certificate by SkillUp: https://www.simplilearn.com/skillup-f... ✅Subscribe to our Channel to learn more about the top Technologies: https://bit.ly/2VT4WtH ⏩ Prepare Yourself For Any Interview, Watch The Playlist By Simplilearn: https://youtube.com/playlist?list=PLE... #DataStructureInterviewQuestions #DataStructureInterview #Interview #DSA #DSAQuestions #DataStructure#InterviewQuestions #InterviewPrep #InterviewPreparation #InterviewQuestionsAndAnswers #InterviewQuestionsForFreshers #InterviewQuestionsForExperienced #InterviewQuestionsAnswers #InterviewTips #LearnDSA #Simplilearn 🔥 Watch Top Trending Videos From Simplilearn: ⏩Top 10 Programming Languages in 2023: https

3. Top #10 Data Structure Interview Question

4. #10 Data Structure Interview Questions
Question 10
Consider a text file interrupted by a bug, and all the text has been reversed due to this bug.
So which linear data structure would you choose to implement a program to revert the text file
to its original?

5. #10 Data Structure Interview Questions
Stack Data Structure
Top of the
stack
nraelilpmis
input stack
e
l
i
l
p
m
i
a
r
n
s
Solution

6. #10 Data Structure Interview Questions
Stack Data Structure
Top of the
stack
nraelilpmis
input stack
s i m p l i l e a r n
Solution

7. #10 Data Structure Interview Questions
You have been assigned a task. A task in which you are given an array of numbers to be
arranged in ascending order. So which sorting algorithm would you choose to place the
numbers most efficiently?
Question 9

8. #10 Data Structure Interview Questions
Quick Sort Algorithm
3 5 2 4 1
Pivot
Right
Left
Solution

9. #10 Data Structure Interview Questions
Quick Sort Algorithm
3 5 2 4 1
Pivot
Right
Left
Solution

10. #10 Data Structure Interview Questions
Quick Sort Algorithm
1 5 2 4 3
Pivot
Right
Left
Solution

11. #10 Data Structure Interview Questions
Quick Sort Algorithm
1 5 2 4 3
Right
Left
Pivot
Solution

12. #10 Data Structure Interview Questions
Quick Sort Algorithm
1 3 2 4 5
Right
Left
Pivot
Solution

13. #10 Data Structure Interview Questions
Quick Sort Algorithm
1 3 2 4 5
Right
Left
Pivot
Solution

14. #10 Data Structure Interview Questions
Quick Sort Algorithm
1 3 2 4 5
Right
Left
Pivot
Solution

15. #10 Data Structure Interview Questions
Quick Sort Algorithm
1 3 2
Right
Left
Pivot
Solution

16. #10 Data Structure Interview Questions
Quick Sort Algorithm
1 3 2
Right
Left
Pivot
Solution

17. #10 Data Structure Interview Questions
Quick Sort Algorithm
1 2 3
Right
Left
Pivot
1 2 3 4 5
Solution

18. #10 Data Structure Interview Questions
Question 08
You are given a list of numbers to find the minimum and maximum numbers. Implement a c
program using the appropriate type of data structure.

19. #10 Data Structure Interview Questions
Array Data Structure
• An array is used to store multiple data of the same type, allowing random access to an
element using the index number easily.
• It also improves performance remarkably as it stores the element consecutively.
• The array uses less memory space as there is no usage of the pointer variable.
•
Solution

20. #10 Data Structure Interview Questions
Question 07
Let us assume you're given a task to store a set of elements with two conditions.
• Memory resources drawn should be concise
• The data structure should be dynamically stable when new elements are added, or
existing elements are deleted from the data structure, irrespective of the location.

21. #10 Data Structure Interview Questions
Singly-Linked List Data Structure
address 2 address 3 address 3
10 20 30 40 Null
address 1
address 1 address 2 address 3 address 4
Solution

22. #10 Data Structure Interview Questions
Question 06
Assume you have stored the elements randomly in the memory. Suppose you want to remove
the element from a given position. Which type of data structure would you recommend for
such a task considering minimal traversals to save time?

23. #10 Data Structure Interview Questions
Doubly Linked List
address 1
Null 10 20 30 Null
address 2 address 3
address 1 address 3
address 2
address 1 address 2
Solution

24. #10 Data Structure Interview Questions
Question 05
you're given a problem, and you need to devise a solution.
The task is to build a job portal website, and the problem is the portal needs to pick the latest
profiles listed on the website.

25. #10 Data Structure Interview Questions
Stack Data Structure
10
20
30
40
50
Top of the
stack
puch() is used to insert the item into the stack
pop() is used to delete the item from the stack
Solution

26. #10 Data Structure Interview Questions
Question 04
Given a tree, you must find the prefix expression of a tree, so which order of traversal would
you choose?

27. #10 Data Structure Interview Questions
Pre-order Traversal of a Tree Data Structure
10
5 17
3 1
Solution

28. #10 Data Structure Interview Questions
10
5 17
3 1
Root
Solution
Pre-order Traversal of a Tree Data Structure

29. #10 Data Structure Interview Questions
10
5 17
3 1
Root
Left child
node
Solution
Pre-order Traversal of a Tree Data Structure

30. #10 Data Structure Interview Questions
10
5 17
3 1
Root
Left child
node
Solution
Pre-order Traversal of a Tree Data Structure

31. #10 Data Structure Interview Questions
10
5 17
3
Root
Solution
1
Left child
node
Pre-order Traversal of a Tree Data Structure

32. #10 Data Structure Interview Questions
10
5 17
3 1
Root
Right child
node
Solution
Left child
node
Pre-order Traversal of a Tree Data Structure

33. #10 Data Structure Interview Questions
Question 03
Let's assume that You receive a software requirement that offers ticket booking services. Your
job is to devise a solution that stores all the booking requests and responds to the requests
based on a first-come, first-serve approach.
Which is the most viable and dynamically stable data structure?

34. #10 Data Structure Interview Questions
Queue Data Structure
Solution
10 20 30 40 50
Enqueue
Rear

35. #10 Data Structure Interview Questions
Queue Data Structure
Solution
10 20 30 40 50
Dequeue
Front

36. #10 Data Structure Interview Questions
Rahul has a large army. He arranges them in arbitrary order, and everyone is given an integer
id. Now Rahul wants to add one army in the beginning.
Now, use a single pointer variable, and it should be possible to traverse in both directions.
Implement a program to solve the problem statement.
Question 02

37. #10 Data Structure Interview Questions
Circular Singly Linked List
Head Next
2000
2016
2022
3000
Data Next
Data Next
Tail Head
Solution

38. #10 Data Structure Interview Questions
Question 01
Given a tree, you must count the number of nodes in the tree. Create a function and try to call
the function inside the same function.

39. #10 Data Structure Interview Questions
Tree Data Structure
5
4 7
3 2
Root
Parent node
child node
Solution

40. Bonus Question

41. #10 Data Structure Interview Questions
Question 01
John has moved to a small village and likes visiting one of his best friends. He wants to take
the shortest route because he is in a hurry to meet his best friends. So now he has decided to
take the shortest path. John starts at intersection one, and his friend is at intersection n. Each
road links two N intersections from the start to its destination point. Using which data
structure would you solve this problem statement?
01
01
01

42. #10 Data Structure Interview Questions
Let’s consider there’s a class of 25 students, and we want to store their grades for each of
their five courses. Is there a way we can keep all this information?
Question 02