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Amazon Software Development Engineer Intern Interview Questions, Process, and Tips
Top Amazon Software Development Engineer Intern Interview Questions and Answers
- Q1. Say you're dealing with really long integers. They're too long to fit into a regular datatype, so linked lists are used to store them, with each node of the list containi ...read more
- Q2. Given a linked list (singly-linked, non-circular), swap the kth node with the kth last node in the list. Note that the length of the list is not known.
- Q3. long numbers, add the two numbers and store the result in a third linked list. 2/2
Amazon Software Development Engineer Intern Interview Experiences
23 interviews found
Software Development Engineer Intern Interview Questions & Answers
abhishek ahuja
posted on 25 Aug 2017
I was interviewed before Aug 2016.
Interview Questionnaire
4 Questions
- Q1. Given a Binary Search Tree, print the kth last node in inorder traversal of the tree
- Ans.
To print the kth last node in inorder traversal of a Binary Search Tree, we can use a modified inorder traversal algorithm.
Perform an inorder traversal of the BST, keeping track of the nodes visited in a stack.
Once the traversal is complete, pop k elements from the stack to get the kth last node.
Print the value of the kth last node.
- Q2. Given a linked list (singly-linked, non-circular), swap the kth node with the kth last node in the list. Note that the length of the list is not known.
- Ans.
Swap kth node with kth last node in a singly-linked, non-circular linked list.
Traverse the linked list to find its length or use two pointers to find kth and kth last nodes.
Swap the nodes and update the pointers accordingly.
Handle edge cases such as k being out of bounds or kth and kth last nodes being the same.
Consider using recursion to traverse the linked list.
- Q3. Say you're dealing with really long integers. They're too long to fit into a regular datatype, so linked lists are used to store them, with each node of the list containing one digit. Now the problem is, g...
- Ans.
Given two linked lists representing long integers, perform addition operation.
Traverse both linked lists simultaneously, starting from the head.
Perform addition of corresponding digits and keep track of carry.
Create a new linked list to store the result.
Handle cases where one list is longer than the other.
Handle the final carry if any.
- Q4. Long numbers, add the two numbers and store the result in a third linked list. 2/2
- Ans.
Add two long numbers and store the result in a third linked list.
Create a linked list to store the result
Traverse both input linked lists simultaneously, adding corresponding digits
Handle carry over from addition
If one linked list is longer than the other, handle remaining digits
Return the resulting linked list
Interview Preparation Tips
Experience: There were 20 logical reasoning questions - some of them were general questions testing math skills, others tested knowledge of core computer science concepts. The coding questions were both moderately difficult and took quite some time to solve.
For the coding questions, I got one correct, and one only halfway through, so it did not pass for all test cases.
So for the second one, I added some comments explaining what more logic should be added and what is the missing piece because of which test cases may fail.
Tips: The advice I would give is to write your code as clearly as possible and with comments as well, so that the examiner has to spend the least amount of time in understanding what you're trying to put across.
Duration: 2 hours
Total Questions: 22
Round: Technical Interview
Experience: This round involved 2-3 questions and there was no hurry about time, the interviewer was patient. First thing is to ask questions about the question, clarify any doubts before starting to write any code. After getting clarity on the questions, I was silently thinking for 2-3 min for each question, how to approach it and how to solve. Then I started working out on paper and simultaneously explaining to the interviewer about the approach.
Tips: Be calm, think clearly, ask questions, and communicate your thoughts, ideas, possible alternate approaches.
The interviewer wants to know how you think, how you analyse, eliminate options. So if you give them just the answer, they'll not get all that info, so if you're more verbal, it may add as an advantage.
Round: Technical Interview
Experience: This round went on for very long, about an hour or so. It took 5 min to first understand the question, what all I have to figure out etc. Then I thought for 3-4 min and presented my understanding. There was lot of back and forth, the interviewer was giving feedback on my approach, and I was iterating my solution.
Finally we arrived at a satisfactory solution which consisted of three parts (the interviewer was pointing out flaws, pointing out edge cases etc and checking how I handle such cases, such situations).
Then I was asked to write the code for each of these three parts of the solution. With that this round concluded.
Skills: Programming, Communication, Logical And Structured Thinking, Reasoning Ability, Diagrammatic Reasoning
College Name: Amrita School Of Engineering, Coimbatore
Skills evaluated in this interview
Anonymous
Linked list based coding question and BST
(2 Questions)
- Q1. About BFS and DFS
- Q2. Linked list coding question (using bfs)
Interview Preparation Tips
(2 Questions)
- Q1. Possible Parenthesis
- Ans.
The question is asking for the possible combinations of valid parentheses.
Use backtracking to generate all possible combinations of parentheses.
Keep track of the number of open and close parentheses to ensure they are balanced.
Exclude invalid combinations where close parentheses appear before open parentheses.
- Q2. Course Schedule
(2 Questions)
- Q1. How are you doing
- Q2. Tell me about yourself
- Ans.
I am a passionate software engineering student with experience in web development and a strong desire to learn and grow.
Currently pursuing a degree in Computer Science
Proficient in languages such as Java, Python, and JavaScript
Experience with web development technologies like HTML, CSS, and React
Completed internships at tech companies like XYZ Corp
Skills evaluated in this interview
What people are saying about Amazon
VSCODE , one question asked
(2 Questions)
- Q1. Why do you want to join amazon?
- Ans.
I want to join Amazon because of its innovative culture, vast opportunities for growth, and impact on global e-commerce.
Innovative culture: Amazon is known for its cutting-edge technology and constant drive for innovation.
Opportunities for growth: Amazon offers a wide range of projects and roles for personal and professional development.
Impact on global e-commerce: Amazon's reach and influence in the e-commerce industr
- Q2. Where do you see yourself after 5 years?
- Ans.
In 5 years, I see myself as a senior software engineer leading a team of developers on innovative projects.
Leading a team of developers on innovative projects
Advancing to a senior software engineer role
Continuing to learn and grow in the field of software development
Amazon interview questions for designations
Software Development Engineer Intern Interview Questions & Answers
Pavithra devi
posted on 20 Sep 2024
I applied via Naukri.com and was interviewed in Aug 2024. There was 1 interview round.
Given 2 medium level questions
Get interview-ready with Top Amazon Interview Questions
(2 Questions)
- Q1. DSA question on Priority Queue
- Q2. Hard Leetcode question on DP
I applied via Company Website and was interviewed before Nov 2023. There were 2 interview rounds.
Duration of 90 min with 3 dsa questions with 2 medium and 1 hard level dsa questions.
(2 Questions)
- Q1. Computer Networks interview questions
- Q2. Operating system interview questions
Interview Preparation Tips
- Computer Networking
- operating sytem
- Algorithms
All the Best
You have to solve coding question on a Platform
(1 Question)
- Q1. Dsa questions was asked
Dsa questions were asked
Selected
I was interviewed in Aug 2023.
Solve leetcode questions and give contest which really helps to clear coding rounds
(2 Questions)
- Q1. Topics from arrays, dp and graph
- Q2. Start with brute force and go with optimal solution along with time and space complexity
Interview Preparation Tips
2 mid level questions on ds
(2 Questions)
- Q1. System design on my done projects.
- Ans.
Designed a system for a project involving real-time data processing and analysis.
Utilized microservices architecture for scalability and flexibility
Implemented message queues for asynchronous communication between components
Used a combination of relational and NoSQL databases for different data storage needs
- Q2. What pattern have you followed while building modules.
- Ans.
I have followed the modular design pattern while building modules.
I break down the software into smaller, independent modules that can be easily managed and maintained.
I ensure each module has a clear purpose and well-defined interfaces for communication with other modules.
I use techniques like encapsulation, abstraction, and separation of concerns to create modular designs.
Example: Using the MVC (Model-View-Controller...
(1 Question)
- Q1. Questions on team work.
Skills evaluated in this interview
DSA-Binary Trees,Dynamic Programming
(2 Questions)
- Q1. Boundary Traversal Of tree
- Ans.
Boundary Traversal Of tree
Boundary traversal of a tree involves visiting the nodes of the tree in a specific order
The order is: left boundary, leaf nodes, and right boundary
We can use a combination of pre-order, in-order, and post-order traversals to achieve this
Start with the root node and recursively traverse the left subtree, printing the nodes
Then traverse the leaf nodes using an in-order traversal
Finally, traverse...
- Q2. Find Peak Element
- Ans.
Find Peak Element
A peak element is an element that is greater than its neighbors
The problem can be solved using binary search
If the middle element is smaller than its neighbors, then there must be a peak on the right side
If the middle element is greater than its neighbors, then there must be a peak on the left side
Repeat the process on the corresponding side until a peak element is found
Interview Preparation Tips
Skills evaluated in this interview
Amazon Interview FAQs
Some of the top questions asked at the Amazon Software Development Engineer Intern interview -
The duration of Amazon Software Development Engineer Intern interview process can vary, but typically it takes about 2-4 weeks to complete.
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Amazon Software Development Engineer Intern Interview Process
based on 14 interviews in last 1 year
2 Interview rounds
- Coding Test Round
- Technical Round
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