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Amazon Senior Sdet Engineer Interview Questions, Process, and Tips
Top Amazon Senior Sdet Engineer Interview Questions and Answers
- Q1. mean heap fo minimising the cost
- Q2. find string in array
- Q3. subarray in given array
Amazon Senior Sdet Engineer Interview Experiences
5 interviews found
Anonymous
I applied via LinkedIn
(5 Questions)
- Q1. Find string in array
- Ans.
Search for a specific string in an array of strings.
Iterate through the array and compare each string with the target string.
Use a loop to go through each element in the array and check for a match.
Consider using built-in methods like indexOf() or includes() for efficient searching.
Handle cases where the target string is not found in the array.
- Q2. Find string in array
- Ans.
Search for a specific string in an array of strings.
Iterate through the array and compare each string with the target string.
Use a loop to go through each element in the array and check for a match.
Consider using built-in methods like indexOf or includes for efficient searching.
- Q3. Subarray in given array
- Ans.
Find all subarrays in a given array of strings
Iterate through the array and consider each element as the starting point of a subarray
For each starting point, iterate through the array to find all possible subarrays
Store each subarray found in a separate list
- Q4. Stack for balance paranthesis
- Ans.
Use stack data structure to check for balanced parentheses in a string.
Create an empty stack to store opening parentheses
Iterate through the string and push opening parentheses onto the stack
When encountering a closing parenthesis, pop from the stack and check if it matches the corresponding opening parenthesis
If stack is empty at the end and all parentheses have been matched, the string is balanced
- Q5. Mean heap fo minimising the cost
- Ans.
A mean heap is a data structure that minimizes the cost of accessing the smallest element.
Mean heap is a type of binary heap where the value of each node is less than or equal to the values of its children.
It is useful for finding the minimum element quickly, as the root node always contains the smallest value.
Insertion and deletion operations in a mean heap have a time complexity of O(log n).
Skills evaluated in this interview
I applied via LinkedIn and was interviewed in Oct 2024. There were 2 interview rounds.
DSA medium level 2 question based on graph and recursion
(2 Questions)
- Q1. DSA question on dynamic programming
- Q2. Question on graph (topological sort)
Interview Preparation Tips
Selected
I applied via LinkedIn and was interviewed in Sep 2024. There was 1 interview round.
(2 Questions)
- Q1. Asking for my Hobbies
- Q2. Ctc was discussed with me
What people are saying about Amazon
Prime numbers usung sieve if erastothenesis
Amazon interview questions for designations
Prabhas Shrivastava
I applied via Company Website and was interviewed in May 2024. There was 1 interview round.
Amazon Chime interview with questions on DSA
Interview questions from similar companies
(2 Questions)
- Q1. Level order tree traversal
- Q2. Find the pair element from the array
- Ans.
Find the pair element from the array
Iterate through the array and use a hashmap to store elements and their counts
Check if the current element's complement exists in the hashmap
Return the pair if found, otherwise return null
Skills evaluated in this interview
I was interviewed before May 2016.
Interview Questionnaire
4 Questions
- Q1. Tell us about yourself
- Ans.
I am a passionate software engineer with experience in developing web applications and a strong background in computer science.
Experienced in developing web applications using technologies such as HTML, CSS, JavaScript, and React
Strong background in computer science with knowledge of data structures and algorithms
Proficient in programming languages such as Java, Python, and C++
Familiar with Agile development methodolog
- Q2. Why Flipkart
- Ans.
Flipkart is a leading e-commerce platform in India with a strong focus on technology and innovation.
Flipkart offers a challenging and dynamic work environment for software engineers.
The company has a strong reputation for investing in technology and innovation.
Flipkart has a large user base and offers opportunities to work on a variety of projects.
The company has a strong focus on customer satisfaction and user experie...
- Q3. Are you comfortable to reallocate
- Ans.
Yes, I am comfortable with reallocating as needed.
I am flexible and adaptable to changing circumstances.
I have experience working in dynamic environments where priorities can shift.
I am willing to take on new challenges and responsibilities as required.
- Q4. Why should we hire you
- Ans.
I have a strong technical background, excellent problem-solving skills, and a proven track record of delivering high-quality software.
Extensive experience in software development, including proficiency in multiple programming languages such as Java, Python, and C++
Strong problem-solving skills demonstrated through successful completion of complex projects
Proven track record of delivering high-quality software on time a...
Interview Preparation Tips
Experience: 2 problem statements to be coded using any language
Tips: Focussed on string manipulations and enormous data size handling
Duration: 1 hour 30 minutes
Total Questions: 2
Skills: C/C++
College Name: Guru Premsukh Memorial College of Engineering
Interview Questionnaire
9 Questions
- Q1. Calculate the level sum of the binary tree
- Ans.
Calculate the level sum of a binary tree.
Traverse the tree level by level using BFS
Add the values of nodes at each level
Store the level sum in an array
Return the array of level sums
- Q2. Defective ball puzzle problem
- Q3. Some basic problems (OOP concept,basic datastructures)
- Q4. Vertical sum of binary tree
- Ans.
Vertical sum of binary tree is the sum of all nodes in each vertical line of the tree.
Traverse the tree in-order and keep track of the horizontal distance of each node from the root.
Use a hash table to store the sum of nodes at each horizontal distance.
Recursively traverse the left and right subtrees and update the hash table accordingly.
- Q5. Questions on TCP/IP, Database, OS, Data-structures, (and on many more which you studied in your whole college life)
- Q6. Calculate the top 10 words , which comes frequently in 1 hour time span , on facebook, (dynamically)
- Ans.
Calculate top 10 frequently used words on Facebook in 1 hour dynamically.
Use Facebook API to fetch data
Implement a script to count word frequency
Sort the words based on frequency and return top 10
- Q7. Tell About Yourself
- Ans.
I am a software engineer with experience in developing web applications and a passion for problem-solving.
Proficient in programming languages such as Java, Python, and JavaScript
Experience with front-end frameworks like React and Angular
Familiarity with back-end technologies such as Node.js and Spring Boot
Strong understanding of data structures and algorithms
Ability to work collaboratively in a team environment
- Q8. Family Background
- Q9. Number of rectangles/squares in chess board
- Ans.
There are 204 squares and 1296 rectangles on a standard 8x8 chess board.
The number of squares can be calculated using the formula n(n+1)(2n+1)/6, where n is the number of rows/columns.
The number of rectangles can be calculated using the formula n(n+1)m(m+1)/4, where n and m are the number of rows and columns respectively.
For an 8x8 chess board, there are 64 squares of size 1x1, 49 squares of size 2x2, 36 squares of siz...
Interview Preparation Tips
Experience: There were 22 MCQ questions on the technical .while 3 questions were of coding type .1.check for balanced parentheses in an expression2. Find out next higher number with same set of digits3. Doesn't Remember.
Tips: MCQ questions were not time consuming , so try to do that questions in less time , so you will get enough time for coding questions.
Duration: 90 minutes
Total Questions: 25
Round: Technical Interview
Experience: My experience was very awesome , i answered all the questions , although in starting i was very nervous , so at starting interviewer help me get my confidence, interviewer was very helpful.
Tips: Don't get panic. Just listen the questions carefully and then answer it.
Round: Technical Interview
Experience: I was not confident while answering Q3, and my answer was not appropriate, though after with little help of interviewer i got the answer properly.
Round: HR Interview
Tips: Keep confidence and show them good communication skills.Previous round's performance also matters in this rounds
College Name: NIT JALANDHAR
Funny Moments: In H.R. RoundOne of my friend was interviewed before me, so he told me the questions,H.R. asked him, and one of them was, number of squares in chess board, and then there was my turn for H.R. interview, i went, and he asked me , In chess board , there are how many , before completing his question i answered,204, while his question was , how many rectangles, "ye question pakka tune apne friend se pucha hoga :p " then we passed smiles, but i gave him proper solution of calculation of 204, and then answered my question too.
Skills evaluated in this interview
Aditya Sundaram
Interview Preparation Tips
Experience: First round was a simple round which involved 10 multiple choice questions and 3 coding questions on hackerrank platform.
Round: Technical Interview
Experience: Mainly on topics like networks, data structures and algorithms, operating systems. The interviewers looked for people who have had prior experience in web development and asked questions regarding web development in depth too.
Tips: I recommend everyone to read the book titled, 'Cracking the Coding Interview' as it was helpful in my approach to an interview.
General Tips: The one major thing that would give you the edge in joining Myntra would definitely be exposure to web development. Since it is not a part of the curriculum , it's all the more important for you to familiarize yourself with web development. In fact, a few projects in the same field would put you in a very advantageous position to get the job.
Skill Tips: 1. Start your placement preparations well ahead, no point regretting later.
2. Keep a concise resume. Do not take your resume to several pages.
3. Do not neglect aptitude preparation. Many people do this mistake and end up not clearing the first round for several companies.
4. Be thorough with your basics across all subjects. (Do not neglect any subject, even they you may like a few and dislike the others.)
5. Keep in mind, the interviewers are really friendly and try to make sure that you're not nervous during the interview. All they want to do is to test you. Be confident and give it your best shot.
Skills:
College Name: NIT Surathkal
Interview Preparation Tips
Experience: GD was conducted for shortlisted candidates and candidates were divided into groups of 6 people.There were 3 topics and each topic was discussed for 2 minutes.No specific rules,like each person needs to speak,are to be followed during the GD.Anyone can initiate,intervene,etc. Finally we were asked to link all three topics and this discussion went on for another 2 minutes.
Round: HR Interview
Experience: Only a single round lasting about 40-45 minutes.There were only 4 people in the panel and technical as well as HR questions were asked. First I was asked to go through my own resume, “Introduce/Tell us about yourself?". E.g.:“Where have you shown leadership qualities?Have you led a
team?Size of team? What new initiatives did you take?”.Core questions starting form basics like “How does an airplane fly?” to specific questions about the different types of engines used in airplanes,their specifications, etc. were asked. HR questions were put up like"What was the most difficult decision in your life?" and grilled on my internship for 15-20 minutes which I did in Transocean. (Another oil field services company).
General Tips: You need to be very good in the basics of your
core courses and if you have done an internship in the oil industry,
you will definitely be grilled on that.Questions will be asked in quick succession.
Skill Tips: Highlight any intern in Oil industry or anything related to that in your resume.Any POR or any sport activity which shows your leadership qualities should me mentioned in your resume.
Skills: Leadership qualities, Athletic, Quick thinking, presence of mind
College Name: IIT MADRAS
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Amazon Senior Sdet Engineer Interview Process
based on 5 interviews
1 Interview rounds
- Coding Test Round
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