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Amazon Interview Questions and Tips

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Amazon interview

25.3k views
AnonymousFresherSelected
Application
I was interviewed on-campus at Anna University Chennai for role at Amazon
Interview Process
Test Other Interview Other Interview Hr cum technical Technical Interview
Round 1

Test

Test Sections
  • Section 1: Written Test
Interview Experience
    Two questions were asked in the written test. It was basically a coding round.
     1) 
                                                                         1
                                                                    /            \
                                                                 2                 3
                                                            /        \           /        \
                                                          4          5       6         7
                                   Output : 1,2 3,7,6,5,4
    2) Given a binary tree, check whether  a given sum ‘x’ is present along any path from the 
root to any of the leaves. 
              1
                                                                    /            \
                                                                 4                 3
                                                            /        \           /        \
                                                          9          5       6         7
                     if x = 14 , answer is true  because 1+4+9 = 14
                     if x =  12, answer is false
Round 2

Other Interview

Interview Questions
    Interview Experience
    The initial interview was known to be Data Structures and algorithms round. The two 
    interviewers totally asked me questions on data structures and mostly concentrated on how 
    much I knew about time and space complexities.
    a) The first question was to find the vertical column sum of every column in a given 
    binary tree and return the result in an array from left to right.
    The first solution which I told is by finding the leftmost and rightmost index of the array , 
    thereby finding the index for the root. Following to this step, the sum can be stored easily while 
    traversing from top to bottom and saving the value at index­1 while moving to the left and at 
    index + 1 while moving to the left. This solution used two tree traversals. 
     He was good with this solution but asked to optimise with respect to time. Then, i 
    shooted out the solution using a doubly linked list where we can traverse to and fro and store all 
    the sum values. While using linked list, instead of index ­1 & index + 1 , prev and next pointers 
    can be used to access the next and prev location from the current location. This way , the 
    solution is optimized with time.
    b) The second question was that I have been given a binary tree where the node 
    structure would be something like below :
     struct tree
    {
           struct tree * left, *right, *sib ;

    Now , the task was to point every sib pointer to its nearest rightmost node in the same level. i.e 
    the sib pointer of the rightmost node at every level would be NULL.
    The first solution which I told them was to perform a Breadth first search and by using a 
    queue would connect all the nodes of a level at a time. But, this would increase the space 
    complexity and of course I was asked to optimize the solution.
           Given tree :
                                                                      root ­­­>  1
                                                                                 /         \
                                                                             2               3
                                                                         /         \              \
                                                                        4       5                 7
         The result should be :
                                              root ­­­>  1
                                                                                 /         \
                                                                             2   ­­­­­­>  3
                                                                         /         \              \
                                                                        4 ­­­­­> 5­­­­­­­­>7
      Let me explain the solution which I gave them for the above example. 
              Starting from 1, for any node connect the sib pointer of left node to its right node if both 
    are present or if both are not null. If the left node is not present then no need to perform this 
    operation but if the right node is alone present, then there may be another possibility for the 
    presence of some other nodes at the same level. Here ,  2 will point to 3 as explained above. In 
    the same way 4 will connect to 5 . But , we come to know that in the second  level there is one 
    more node 3 and it has a child 7 . So , 5 is connected to 3’s right child. In the same way the 
    other nodes would be connected. By this approach, we can understand that before pursuing 
    towards any level, all the sib pointers in the previous level are connected. This solution would 
    work for all the test cases. 
    c) Given two arrays of integers , find the intersection of both arrays. I was asked to give 
    various solutions and sort the solutions with respect to time complexitiy.
    d) Given a binary search tree with positive integers and a number ‘X’ find the next 
    greatest number to X from the BST. If the number is not present, return ­1.
    Round 3

    Other Interview

    Interview Questions
      Interview Experience
       and code for it on paper. The two problems were based on data structures.
      a) Given a binary tree, find the ancestor matrix where time complexity was considered 
      but not much than the written code.
      Given tree :
                                                                        root ­­­>  1
                                                                                   /         \
                                                                               2               3
                                                                           /         \              \
                                                                          4       5                 6
      The ancestor matrix is shown as 
           1   2   3   4   5   6  
      1   0   1   1   1   1   1   
      2   0   0   0   1   1   0
      3   0   0   0   0   0   1
      4   0   0   0   0   0   0
      5   0   0   0   0   0   0
      6   0   0   0   0   0   0
      Let the above matrix would m[][]  such that m[i][j] = 1 , where i is the ancestor of j.
      b) The second question was to swap every consecutive two nodes in a singly linked list.
               For example given a list 1­2­3­4­5­6­7­null
               The result must be      2­1­4­3­6­5­7­ null
      For the above both questions , the interviewer saw the code and reviewed it with 
      different test cases to get satisfied.                              
      Round 4

      Hr cum technical

      Interview Experience
      This was a HR cum technical round, but most of the questions were straight forward. 
      The two managers who interviewed me were testing my managerial skillls. Lot of questions 
      arised and the interview went for more than a hour. Few questions were like :
      a) What do you know about Amazon ?
      b) Why I preferred Amazon.com to my previous offer ?
      c) The responsibilites which I undertook during my college days with brief explanations 
      on every responsible task which I did !!
      d) Any projects which I did apart from academics ?? I explained about my android 
      project which I did with my elder brother.
      At the end the round ended with a simple technical question =>
            I was asked to design a stack using a c++ class such that it can perform the following 
      functions which will be called by different APIs :
                  ­ Create a stack of size ‘n’
      ­ Push an element into the stack
      ­ Pop an element from the stack
      ­ Destroy the stack 
           At the end of this round, I asked about their experiences at Amazon.com and about my 
      work/role at amazon in future.
      Round 5

      Technical Interview

      Interview Questions
        Interview Experience
        Coming to the fourth round, it was totally technical. Technical here covers theortical topic 
        from the fields of Operating systems, OOPS and Networks. The questions which were asked 
        were :
        a) What is the difference between physical address and virtual address ?
        b) What is page table and paging ?
        c) What is the difference between thread and process ?
        d) What is context switch and how it differs between process and threads ?
        e) What are threads and why are threads preferred to process ?
        f) What are semaphores and differnce between semaphores and locks ??
        g) What are the 7 OSI layers in networks and their functionalities ?? He mostly asked 
        about transport and network layers.
        h) What is encapsulation ?
        i) What is polymorphism and their types ??
        j) What is differnce between polymorphism and function overloading ??
        k) The last question was to design / implement a singleton class .
        Here this round ended, but I made many sothapals without sufficient preparation :P
        Interview No ­5
         This interview was also HR cum technical round but it was known as a bar raiser round. 
        I am not sure how to spell it too. The questions were almost the same as in the 3rd interview 
        with additional questions like  “ how did you react in conflicting situations in four year career ? “.
        This round also ended with technical questions :
        a) Given a doubly linked list where the next pointer is pointed to the next node in 
        that list but the previous pointer is pointing to any random node. I was asked to make a 
        similar list efficiently . [ Simply a xerox of it ]
        b) The second question was a string based traversing and pattern matting type 
        where there were given two strings ‘A’ and ‘B’. 
        I was asked to return true if all the characters in ‘B’ were present in ‘A’ or else 
        return false. I explain many solutions in which he asked me to code for a particular 
        solution and he verified the code by iterating though the test cases. 
        The round ended with few personal questions on experience and my future role. So, I was into 
        Amazon after a week of discussions
        Read Full post...
        2

        Amazon Software developer interview

        23.8k views
        AnonymousFresherSelected
        Application
        I was interviewed on-campus at NIT Jaipur for Software developer role at Amazon
        Interview Process
        Test Technical Interview Other Interview Other Interview Other Interview
        Round 1

        Test

        No. of Questions
        22 questions
        Test Sections
        • Section 1: Online test
        Interview Experience
        1 Written Test - (20 MCQ + 2 Coding Questions) on HackerRankAmazon visited our Campus on 28th July. In the morning the recruitment process started with the Written Test. It was taken on Hacker Rank which comprised of 20 MCQ Questions followed by 2 Programming Questions. MCQ Questions usually contain questions on C, DBMS, OS, and 4-5 Logical Questions. One should be aware that the Hacker Rank platform keeps record of how much time you have spent on each Question and after spending so much time did you attempt it or not. The 2 Coding Problems were quite easy. Only speed and accuracy was required to crack this round.Written Round Coding Question -1) A Linked List was given and we had to swap the ith node with (n-i+1)th node.2)(given some intervals), merge the common Intervals.I coded both the problems and passed all the test cases of the first question and half of the test cases of the 2nd Question. By the evening the results of the written round were declared and the Interview Process started. I rushed to the Design Centre and while I was arranging my grade sheets and my resume , something totally unexpected happened. One of the Amazon Employees who was also an Alumni of MNIT Jaipur walked up to me and told me that I have done very well in the Written Test and I was ranked 2nd based on the Written Test. He wished me ‘Best of Luck’ and told me to calm down and give my best. Talking to him really motivated me a lot. At the same time I was shocked that he still remembered my name even after an year, as we had talked only for a couple of minutes during my Internship Process in Amazon in which I was among the last 3 Students who went to the final round but was not selected. Apart from the students shortlisted from the written test, Amazon also shortlists around 5-6 more candidates based on their CGPA and some other factors. But it should be noted that at any time during the Recruitment Process, Cumulative scores can be considered.
        Interview Tips
        CGPA above 8 should definitely be maintained.
        Round 2

        Technical Interview

        Interview Questions
        • Question 1: A String was given with a lot of words in it and I had to reverse all the words.
        • Question 2: A String was given and I have to swap word by word from the beginning to the end.
        • Question 3: In question 2 when there are ‘n’ in the String whose position shouldn’t get affected during the swapping process.
        • Question 4: Continuation was when more than 1 ‘n’ occur together
        Interview Experience
        The Interview Process started with around 25 candidates. I was among the first few with whom the Interview had started which went on smoothly



        Questions of Interview Round II –



        1) A String was given with a lot of words in it and I had to reverse all the words
        2) A String was given and I have to swap word by word from the  beginning to the end.
        3) In question 2 when there are ‘n’ in the String whose position shouldn’t get affected during the swapping process
        4) Continuation was when more than 1 ‘n’ occur together.



        I was asked to code the above, and told them about the time and space complexities. Then he went through my resume and based on my projects he appreciated my interest in OS. and asked me a Question –


        You have a large game and a small memory, so how will you play the game.
        I told him the concept of Virtual Memory and how it makes it possible to run such a game. Then he asked me whether there is any limit or constraint on the size of the virtual memory. I explained to him if the amount of memory required at any particular moment of time to run the game, itself exceeds the available size in the RAM for the user, then we won’t be able to play. Then he asked “Suppose you have a 4 GB Ram then how much memory will be available to the user and what will happen to the other memory”. I explained that kernel occupies some memory and apart from that page tables and all are also stored in the memory. Then there were some discussions regarding my projects.
        Interview Tips
        These is some Important stuff which one should not miss while preparing for the interviews :


        Languages one should be knowing for Placements:
        1) C : For most of the companies
        2) C ++ - For Faster coding using Standard Template Libraries and for OOPS Concept3) Java – For some specific companies which are focused on Java


        Operating System:
        1) Galvin Text Book
        2) Video Lectures by Prof. Kamakoti – IIT Bombay (Not available on NPTEL. You can get it from current student of IIT Bombay or take it from me. I have Video Lectures of 2013 Pass out Batch)
        3) Good grasp on OS implementation on Linux and Pint OS.
        4) Detail Knowledge of How Threading is implemented in JAVA


        Computer Networks:
        1) Video Lectures by Prof. Sujoy Ghosh – IIT Kharagpur (Available on NPTEL)
        2) Good grasp on Linux Networking (Servers and Networking Commands)


        DBMS :
        1) SQL Queries.
        2) Database Implementation in MY SQL (Using B trees)
        3) Indexing and Hashing in DBMS
        4) Drawbacks of SQL Database
        5) No SQL Database – Graph and Document Type Database and how they solve the problems
        6) Every minute detail of the Database you have created in your DBMS Project.


        Data Structures and Algorithms:
        1) Video Lectures on Data Structures by Prof Naveen Garg – IIT Delhi (Available on NPTEL)
        2) Video Lectures on Data Structure and Algorithm by Prof. Charles Leiserson and Prof. Erik Demaine - MIT.
        3) TextBook – “Data Structures and Algorithms made Easy” by Karumanchi
        4) TextBook – “Cracking the Coding Interview” by Gayle Laakmann Founder and CEO, CareerCup.com
        5) GeeksforGeeks6) Company Specific Preparation by Practicing Previous Interview Papers


        Programming Practices:
        1) Codechef or Any other Coding Website: Experience helps to increase your Programming Speed, definitely useful in qualifying Coding Round
        2) Standard Template Library in C++ for faster Coding - Hacker Rank Tutorial


        Other Stuff to Study:
        1) Brain Teasers
        2) Design Problems (asked by Companies like Adobe. Detailed Example in Karumanchi Textbook)
        3) Logical And Aptitude Preparation – Arun Sharma TextBook
        4) HR Interview preparation from Indiabix.com
        Round 3

        Other Interview

        Interview Questions
        • Question 1: There is a big file containing numbers and we have to sort all of them.
        • Question 2: How to implement word suggestions like that in Eclipse.
        • Question 3: Given 2 integers a and b, the sequence which will be formed is a, b, a+b, a+2b…. i.e Current element = sum of the previous 2 elements. So now given a number k, how to figure out if it lies in the sequence or not.
        Interview Experience
        Around 17 students were shortlisted. The resumes of students and their academic projects were given importance while shortlisting for this round. It started at around 10PM.



        Questions of Interview Round III –



        1) There is a big file containing numbers and we have to sort all of them.



        I mentioned the approach mentioned in GeeksforGeeks that for example the available RAM for this purpose is 100 MB. So we can break the File in chunks of 100 Mb and bring the chunks in Memory and first sort them individually. Then we can prepare a heap containing first elements from all chunks. And keep extracting min from heap and replace it by next smallest element of the chunk it belongs. Then he asked if the number of chunks being formed here are very large, that is the heap I am preparing won’t fit in 100MB, then what to do. I suggested some further modifications and finally he was satisfied with the solution.



        2) How to implement word suggestions like that in Eclipse.



        I explained that it can be done using Tree Data Structure or using some sort of multilevel hashing in combination with storing words in sorted form. He asked me time complexities and told me to think of further improvements. He wasn’t completely satisfied and moved onto the next question.



        3) Given 2 integers a and b, the sequence which will be formed is a, b, a+b, a+2b….



        i.e Current element = sum of the previous 2 elements.



        So now given a number k, how to figure out if it lies in the sequence or not.



        This Question is not as easy as it looks. Here a and b can be negative or positive so the Generated Sequence can contain all positive or all negative or alternate occurrence of positive and negative element in sequence. So till which point should we generate the sequence and decide that k can or cannot lie in the sequence. I wrote a code but he mentioned few test cases in which my code was failing. After a few modifications I was able to write a satisfactory code solving all the test cases.
        Round 4

        Other Interview

        Interview Questions
        • Question 1: Given a Binary Tree, if it is a BST or not.
        • Question 2: A stream of numbers are coming and I have to keep track of the kth largest number in it.
        Interview Experience
        I answered both the questions and also mentioned  solution to kth largest if Deletion operation is also there and if it is not. Then he told me to write the code for Heapify Function. Again there were some discussion regarding my Projects.
        Round 5

        Other Interview

        Interview Questions
        • Question 1: Summer Internship Project
        • Question 2: Given an Infix expression, how to evaluate its answer.
        Interview Experience
        Questions of Interview Round V -
        This round started with a detailed discussion about my Summer Internship Project in Wooqer. After that I was asked to introduce myself. Then he asked me -

        1) Given an Infix expression, how to evaluate its answer.

        I was asked to write the code for it covering all the cases and I was given half an hour to do it. I wrote it in about 15-20 minutes. Interview of 4th Round got over by about 9 PM, and the results were declared by 11PM.
        Interview Tips
        Amazon mostly focuses on – Tries, Big Data, Hashing, Strings. Apart from my general preparation for the Interview, I had gone through around 60 Amazon Interview Papers available on GeeksforGeeks, so I was totally aware of the kind of Questions I would be facing in the Interview, and prepared myself accordingly. In this year’s Amazon Interviews mostly the questions asked were not directly from GeeksforGeeks. And few questions which were picked directly from GeeksforGeeks, the solution they were expecting for it was better than that mentioned in GeekforGeeks. But to guess such a solution, one should surely be aware of all the existing solutions in GeeksforGeeks.
        Skills

        Skills Tested

          Resources

          Preparation materials

          Books
          • Logical And Aptitude Preparation u2013 Arun Sharma TextBook,
          • Cracking the Coding Interviewu201d by Gayle Laakmann Founder and CEO, CareerCup.com,
          General Tips
          Self Projects have a very high weight age in one's selection because this is one of the many things that distinguishes you from other candidates sitting in the Interview. It also shows your capabilities and your field of Interest. Also, Summer Internship surely matters a lot in Companies like Amazon. There was a very detail discussion of my Internship at Wooqer during the Interview Process at Amazon so be prepared.
          Read Full post...
          3

          Amazon interview

          20.5k views
          AnonymousFresherSelected
          Application
          I was interviewed on-campus at IIT Kanpur for Amazon
          Interview Process
          Test Interview
          Round 1

          Test

          Test Sections
          • Section 1: Written
          Interview Experience
          The written test was quite similar to the typical CAT pattern. It contained sections on Reading Comprehension, Data Interpretation and Mathematics.
          Round 2

          Interview

          Interview Questions
            Interview Experience
            There were 3 interview rounds:
            There were 2 interviewers in the first interview, one was a technical guy and the other was from HR. They asked me a few
            very simple puzzles, a few basic programming questions (swapping the value of two variables etc.), questions related to the development cycle of software products.  The HR guy asked stuff like what do you want to achieve in life? Strengths, weaknesses etc.
            The second interview was resume based. He asked me about my thesis, internship, various projects, positions of responsibility etc. The third interview was the most important one (and I guess that was the deciding interview). The interviewer started with questions like why finance? Which companies are you sitting for? Then he gave me a case study: “As a banking organization, you have given house loans to a lot of customers. Given the current scenario, you have to profile the customers to which loans have been given based on the chances that they would pay back.” He started with this scenario and as I gradually started analyzing things and proposing models he kept on increasing the complexity saying you don’t have this data, you can’t make that assumption etc. Ultimately he narrowed down it down to a problem which was almost unsolvable. When I got stuck at that he told me that his idea was to just give me a taste of the toughness of problems they encounter in day-to-day business.
            Skills

            Skills Tested

              General Tips
              After spending three or four years enjoying the IITK adventure, one suddenly feels a jolt when he/she arrives in the final year. You find yourself wondering at times, asking yourself the pertinent question, what next? And seriously, the best way to start preparing for placements, GRE, CAT or any other exam for that matter is answering this question honestly. Take a few minutes of your precious time and think what you want to do with your life? Where does your heart truly lie? I know it’s not that easy to decide on this but at least give this a good thought and prioritize your options. Make a list of them on paper if that helps. Once you are done with this, the real planning starts. Take each option one by one and do a truthful analysis of yourself from the perspective of that option. For e.g., say you have CAT as your first priority, and then analyze your strengths and weaknesses from CAT’s perspective. What all areas you need to improve on? How much time and effort would it take? How much time you have got left? By doing this exercise you will really get to know the work that needs to be done and will help you plan for the remaining time.





              Resume:

              I am sure you would have heard it umpteen times but still I will repeat it to stress the point, take resume making seriously! A good resume would drive your interview in the direction you want it to go, a bad resume on the other hand might end the chances of you even getting interviewed! Start by trying to remember each and every achievement of your life and write it down. Spend a few days on this part till you are sure you have got almost everything. Now write it down properly in formal language in the form of a master resume. This would serve

              as a repository of information for all your subsequent resumes. And on top of that, having a fresh memory of your achievements would help you in answering the questions in interviews (especially HR questions). Ideally you should have a separate resume for every company you sit for. The way to do this is make sector specific resumes and edit them accordingly for the different companies of that sector. For example, make a single resume for all the core CSE companies and then you can probably change the list of projects (or their order of appearance) targeting individual companies.



              PPTs:

              If you are serious about getting job in a company, you cannot afford to miss its pre placement talk. PPT is not only an opportunity to know about the company, but it also gives you the chance to know what the company is looking for. This will give you the basic idea around which you should structure your resume and preparation for that company.

              Preparation:

              Core Computer Science Companies: All the core CS companies first take a written test which contains questions on C/C++, may have JAVA, UNIX, Algorithms, Data Structures, basics of Operating Systems and Compilers, some questions on basic networking in case the company works in that field. Almost all the companies have a couple of questions in which you are required to write code on paper. Some companies also have a few questions on aptitude, simple maths or data interpretations. You can find the company specific details in the placement feedback guide. This is the major

              shortlisting step for core companies, so you cannot take it lightly. You can start preparing by revising the relevant courses you did (like Data Structures, Algorithms, Operating Systems, and Compilers). Practice a few questions available in the various placement preparation guides on LAN. Most importantly, practice writing code on paper. This is something we are not used to and requires some practice. This not only will do you good in the written test, but also help you in the interviews.

              Non Core Companies (Finance, Consulting, and Analytics):

              The written tests of most of these companies are quite similar to CAT. So if you are not preparing for CAT, get hold of some CAT preparation material for practice. These tests are more speed based than knowledge, so practice is absolutely essential. Revising some basic mathematics (like probability, progressions etc.) would also do you good. Apart from that, you need to have some basic knowledge and understanding of the field the company works in. For example, if you are appearing for a finance company, learn the basic concepts and common terminologies of finance. The least it would do is show that you are sincerely interested in the field the company works in.
              Read Full post...
              4

              Amazon Area / territory manager interview

              20.4k views
              Avinash SappidiFresherSelected
              Application
              I was interviewed on-campus at IIT Kharagpur for Area / territory manager role at Amazon
              Interview Process
              Resume Shortlist Stress Interview Behavioural Interview Puzzle Interview Other Interview
              Round 1

              Resume Shortlist

              Interview Experience
              I t was resume shortlist.They shortlisted on the basis of CGPA and POR's.
              Interview Tips
              Maintain a decent CGPA. This profile is purely a management profile.So showcase your POR's( :P).
              Round 2

              Stress Interview

              Interview Questions
              • Question 1: Interviewer:"This is purely a management profile.You are from technical background.How dare you to sit in front of me?"
              • Question 2: What are your management skills?
              • Question 3: what are your weakness?strengths?Mention a situation where u are very stressed and how did you overcome it?
              Interview Experience
              I answered every question positively."I have technical knowledge as well as management experience(Inter IIT Tech meet Co-ordiantor).So why shouldn't i be suitable for this role?"Questions based on CV and my education background.
              Interview Tips
              Be confident while giving interview.Always maintain a smile in your face. Don't give lame answers.Answer to the point what they asked. Don't be over smart.
              Round 3

              Behavioural Interview

              Interview Questions
              • Question 1: Why do you want to join Amazon?
              • Question 2: What makes you suitable for this job?
              Interview Experience
              I answered questions very positively.Generally area manager must look after the inbound and outbound logistics.I have some experience in this filed.Then I explained them about an event Messier Marathon which requires telescopes.He has given two puzzles.I din't solve first puzzle.But he liked my approach towards puzzle.Second puzzle I solved it in few seconds.At last he asked me if I was having any questions,then I asked him about the work experience as area manager and about his apple watch(:P).
              Interview Tips
              Answer the questions in positive manner.
              You should not get panicked if you don't know the answer.
              Be positive.
              Practice puzzles.They are available in many websites and apps.
              Maintain eye contact through out the interview.
              Round 4

              Puzzle Interview

              Interview Questions
              • Question 1: Time work puzzle
              • Question 2: River Temple puzzle
              • Question 3: 3l and 5L cans puzzle.
              Interview Experience
              He has gone through my CV.Explain yourself in one word?
              There were many cross questions.What makes you suitable for this?
              Why should I take you?convince me.I answered every question.
              In your work place you will be having managers from different backgrounds.How do you tackle them?I answered that I will learn from them.Questions on CV.
              Interview Tips
              Practice puzzles very well.
              They will try to panic you and will try to take you into critical way.Be confident and stay positive.
              While answering puzzles,don't do calculations in mind rather speak while solving.
              Round 5

              Other Interview

              Interview Questions
                Interview Experience
                This is a telephonic round.It was about 25 minutes.Tell one instance where you gone wrong and tried to correct it later?
                Weakness?Strengths?Most stressful situation?
                Crucial decision taken?
                Leading team?
                Interview Tips
                Before the interview get prepared for these types of questions.At every stage be confident.Here confidence matters in every round.Basically try to see the confidence in you in stressful situations.
                Skills

                Skills Tested

                • Ability To Cope Up With Stress
                • How Can You Adapt The Solution To A Simple Problem To A Much Larger/complex One
                • General Aptitude
                • 1)communication
                General Tips
                Stay Calm

                Be confident

                Be Positive

                Always keep smiling

                Don't loose your heart if you are not shortlisted /selected.

                and finally "Everything happens for a reason.
                Motivation for applying
                I am interested in managing events and getting thins done before stipulated deadline.This role requires people who are good at managing and able to do well in stressful situations.
                Funny Moments
                I asked one HR "Are you married sir?How is your married life?are you able to manage both married life and manager life?"He laughed at these questions and answered humorously.
                Read Full post...
                5

                Amazon Area / territory manager interview

                17.2k views
                PraveenFresherSelected
                Application
                I was interviewed on-campus at IIT Kharagpur for Area / territory manager role at Amazon
                Interview Process
                Resume Shortlist Case Study Interview Puzzle Interview Puzzle Interview Other Interview
                Round 1

                Resume Shortlist

                Interview Experience
                Just a resume shortlist. So, can't do much about it. But CG do matters. All those who got shortlisted were above 8
                Interview Tips
                CG 8+ and highlight the qualities they need.
                Round 2

                Case Study Interview

                Interview Questions
                • Question 1: The temperature in the warehouse has increased to a level that the efficiency of the work force has decreased. You have 3 processes. How would you tackle the situation?
                • Question 2: How does amazon operate? What are the metrics to be looked into? Tell me how would you ensure all the required metrics are at the best level?
                • Question 3: What could be the major issue while leading a team?
                • Question 4: Why amazon?
                Interview Experience
                It was a mix of technical and HR questions. Keep calm and try to answer to your best. Ask them the questions again and again if you don't understand at the first time.
                Interview Tips
                Prepare the questions from glassdoor and have an idea about e-commerce and the profile you are applying for.
                Round 3

                Puzzle Interview

                Interview Questions
                • Question 1: There are 3 successive processes A,B,C in the production. You have 46 people in total. At A, person can process 150units/hr, at B 30units/hr and at C 450units/hr. Tell me how would you divide your workforce?
                • Question 2: You have ants at 3 corners of a triangle. What is the probability that they do not collide?
                • Question 3: Why amazon?
                • Question 4: You need to work for 11 hr a day and too standing, can you do it?
                Interview Experience
                This one was a mix of puzzles and HR questions. Again, try to show the fit into their work conditions. They expect you to work for 11 hrs a day.
                Interview Tips
                Have a general idea about puzzles, etc. You can try "heard on the street"
                Round 4

                Puzzle Interview

                Interview Questions
                • Question 1: Why amazon?
                • Question 2: There are 4 persons of weights 50kg, 50kg, 25kg, 25kg. You need to cross the the water using a boat. How many iterations does it take? The boat capacity is 75kg.
                • Question 3: Same question, but the boat capacity is 50kg
                • Question 4: Was show a puzzle in some app on mobile, was asked to solve it.
                • Question 5: What is IC engine? How is it different from gas turbine? What have you done in GE? etc etc
                • Question 6: Tell me about a time when things were not going well in something. You took the incharge of the situation and have solve the problem.
                Interview Experience
                It was puzzles + HR + core. Didn't expect the core part, but be prepared. Anything could be asked
                Interview Tips
                Glassdoor, puzzles from internet, CV and partial core knowledge
                Round 5

                Other Interview

                Interview Questions
                • Question 1: Tell me about yourself
                • Question 2: What did you do in GE?
                • Question 3: What is the difference between 2 stroke and 4 stroke engine?
                • Question 4: Types of condensers?
                • Question 5: Why amazon?
                Interview Experience
                Didn't expect core. Alas, be prepared for everything. They were testing me how good I was at what I did in college for 4 years.
                Interview Tips
                Be yourself. If you don't know something tell them and be prepared to tell them why you don't know. I didn't know about condensers, as I forgot. Told and explained him. Lastly, be confident.
                Skills

                Skills Tested

                • Compatibility With Company
                • Analyzing And Problem Solving Skills
                • Adaptability
                • Puzzle Solving Capability
                • Management Of People And Situations
                • Core Mechanical Concepts
                Resources

                Preparation materials

                Books
                • Heard On The Street (Puzzle Section Is Important),
                General Tips
                Prepare CV, HR and puzzles. These will be helpful throughout the placement season. Sort out which areas you want to apply and put in all the effort you could in the final sem. Don't even think you can do something in the last month(November), it will be too hectic because of BTP, endsems and company tests. Prepare well in advance and have a timetable and follow it strictly. Also, exhaustive preparation for CAT do helps in the tests for most of the companies.
                Motivation for applying
                It was basically a role where I would be working in teams and doing hands-on work. That was my only motive for applying.
                Funny Moments
                My mobile was vibrating in between the interview. I somehow managed to cut the call. :P
                Read Full post...
                6

                Amazon Customer service associate interview

                16.7k views
                Pranay ShaliFresherSelected
                Application
                I was interviewed on-campus at JB Institute of Engineering and Technology for Customer service associate role at Amazon
                Interview Process
                Just a minute LOgical ability and reasoning verbal and typing HR Interview voice versant
                Round 1

                Just a minute

                Interview Experience
                In this round, students are tested are supposed to speak on particular topic for just a minute. I was given 5 topics and asked me to speak about it for 1 min. I spoke about Make in India initiative. They mainly test your sentence framing ability and how you are connecting the sentences to make meaningful sense.
                Interview Tips
                Just be cool and make your points before you speak.
                Round 2

                LOgical ability and reasoning

                Interview Experience
                In this round, They test you on your logical skills. It's an online test with different sections. It has 40 questions which are to be answered in 60 minutes. They categorize students depending on their scores. I didn't do that great so i was sent to customer service associate. Only very few were sent to TRMS.
                Interview Tips
                It's general logical ability and reasoning test. Peace of mind is what you needed to do well.
                Round 3

                verbal and typing

                Interview Experience
                It's an online test. It has different modules like to fill the blanks in general sentences, type the sentences what you hear,etc. at last you will given a scenario and ask you to write letter. You will be given maximum of 9 minutes. Your score depends on content and time left at the submission. Clearing this round is easy if you are good at typing.
                Interview Tips
                Stay cool and be fast at typing.
                Round 4

                HR Interview

                Interview Questions
                • Question 1: Do you know about what role you are opting? Tell me about it.
                • Question 2: Tell me 10 categories of amazon products.
                • Question 3: Tell me about any of your recent challenges.
                • Question 4: Tell me about any experience where you felt bad shopping experience.
                • Question 5: How would you react if you were in his position?
                • Question 6: A scenario was told and asked how would i deal with.
                • Question 7: Tell me why shouldn't i hire you?
                • Question 8: Any questions?
                Interview Experience
                HR Round was lengthy and I really enjoyed answering. They test you in marketing experience and whether you have minimum knowledge about the role what you are going to take.
                Interview Tips
                Just stay what you are.
                Round 5

                voice versant

                Interview Experience
                This round is all about testing your speaking and listening skills. In this round, You are needed to speak what you hear, Listen to a story and repeat the same in stipulated round. It's all about listening keenly and speaking exactly what you hear. At the beginning, I didn't understand why it is showing repeat. I repeated which i was not supposed to do. I was confused. I didn't clear the round. But still i was offered CSA with Low package.
                Skills

                Skills Tested

                • Logical Reasoning
                • Verbal Ability
                • Verbal Communication Skills
                Motivation for applying
                I really liked the work culture of the company. No agreements an
                Read Full post...
                7

                Amazon Software developer interview

                19.4k views
                Anuj GuptaFresherNot Selected
                Application
                I was interviewed on-campus at NIT Bhopal for Software developer role at Amazon
                Interview Process
                Test Technical Interview Technical Interview Technical Interview
                Round 1

                Test

                Duration
                90 Minutes
                Test Sections
                • Section 1: You are given a string that represent an expression of digits and operands. Eg. 1+2*3 , 1-2+4. You need to evaluate the string or the expression. NO BODMAS is followed. If the expression is of incorrect syntax return -1. Test cases : a) 1+2*3 will be evaluated to 9. b) 4-2+6*3 will be evaluated to 24. c) 1++2 will be evaluated to -1(INVALID). Also, in the string spaces can occur. For that case we need to ignore the spaces. Like :- 1*2 -1 is equals to 1.
                • Section 2: You are given an array of both negative and positive integers. You need to rearrange the array such that positive and negative numbers alternate. Also, the order should be same as previous array and only O(1) auxiliary space can be used and time complexity O(n). eg. -2 3 4 5 -1 -6 7 9 1 result – 3 -2 4 -1 5 -6 7 9 1.
                Round 2

                Technical Interview

                Interview Questions
                • Question 1: Given a Linked list , print yes if it is palindrome else print no.
                • Question 2: Print the level order traversal of the binary tree in the spiral form
                Round 3

                Technical Interview

                Interview Questions
                • Question 1: Maximum of all subarrays of size k(Expected Time Complexity O(N). Input : arr[] = {1, 2, 3, 1, 4, 5, 2, 3, 6} k = 3 Output : 3 3 4 5 5 5 6
                • Question 2: Given Two sorted array of size size n each. Find the Kth largest element in these two array (Expected Time Complexity Log(n))
                Round 4

                Technical Interview

                Interview Questions
                • Question 1: .website having several web-pages. And also there are lot many user who are accessing the web-site. say user 1 has access pattern : x->y->z->a->b->c->d->e->f user 2 has access pattern : z->a->b->c->d user 3 has access pattern : y->z->a->b->c->d user 4 has access pattern : a->b->c->d and list goes on for lot many users which are finite and numbered. Now the question is we have to determine the top 3 most occurring k-Page-sequence. for the above example result will be : (k=3) a->b->c , b->c->d , z->a->b.
                • Question 2: Given two array , one of size m+n and contains m element and other position are empty , 2nd array is of size n and contains n element. both array are sorted , now merge the second array to first one such that the resultant array is sorted. Expexte time complexity(m+n)
                Skills

                Skills Tested

                • Algorithm
                • OS
                • DBMS
                • data structure
                Resources

                Preparation materials

                Books
                • Narasimha Karumanchi,
                Read Full post...
                8

                Amazon Software engineer internship interview

                19.1k views
                NiranjanFresherSelected
                Application
                I was interviewed on-campus at IIT Roorkee for Software engineer role at Amazon
                Interview Process
                Test Technical Interview Technical Interview
                Round 1

                Test

                Duration
                90 Minutes
                No. of Questions
                22 questions
                Test Sections
                • Section 1: Online test
                Interview Experience
                there were 20 MCQ which were on ds , networks and basic coding followed by 2 coding questions.
                1) print all the distinct substrings of a given string in lexicographical order
                2) find the max i-j value in the given array of 0's and 1's such that there are equal number of zeros and ones, where i is the starting index and j is the ending index of the array.
                Interview Tips
                make sure that you pass atleast half the test cases for both the question.
                Round 2

                Technical Interview

                Interview Questions
                • Question 1: boundary traversal of a tree
                • Question 2: find the nearest greater value of a given value in a BST
                Interview Experience
                1) i printed left view then leaves and right view using three level order traversals . he asked me to use one traversal only, then i told him the approach and wrote the working code.
                2) told him the approach and coded it.
                Interview Tips
                look at corner cases properly. the interviewers were friendly, so i felt relaxed.
                Round 3

                Technical Interview

                Interview Questions
                • Question 1: there is an infinite stair case and there are n rounds. in i'th round we can jump i steps at one or discard them. it is given that k'th step is broken , find the max height we can reach with out stepping on the k'th step.
                • Question 2: height h was given and form a binary tree of height h and start combining bottom nodes to form a cone like structure.
                Interview Experience
                1) i told him a recursive O(2^n) solution, optimised it to O(n^2). he told me to optimise further. Then i finally came up with O(n) solution after 5 min and he was satisfied . i coded it. he was satisfied finally :D .
                2) came up with the approach immediately and coded it. he was satisfied.
                Interview Tips
                he was very particular about corner cases and he checked the code througly tested it on some cases to ensure it was working.
                Skills

                Skills Tested

                • the way you think, coding skills and knowledge on data structures.
                Skill Tips
                solve problems from codechef, spoj and codeforces. solve interview questions from geeksforgeeks and careercup.
                Resources

                Preparation materials

                Books
                • algorithms by cormen.,
                General Tips
                be cool. interviewers were friendly. tell them what you are thinking and be clear with the question before answering to avoid wasteage of time.
                Motivation for applying
                some good seniors got intern, so i was inspired.
                Funny Moments
                on the interview day a person came into the conference room to call me for interview, i didnt thought he was interviewer. he was very simple, but intelligent and at last i felt like asking him to ask me one more coding question as it was fun solving questions infront of him, but i didnt do that as i was frightened if i would not be able to answer it would be a negative remark :P .
                Read Full post...
                9

                Amazon Sde (software development engineer) internship interview

                19.1k views
                Sai Nishanth PadalaFresherSelected
                Application
                I was interviewed on-campus at IIT Madras for Sde (software development engineer) role at Amazon
                Interview Process
                Test Technical Interview Technical Interview
                Round 1

                Test

                Duration
                1:30 Minutes
                No. of Questions
                22 questions
                Test Sections
                • Section 1: 20 MCQ
                • Section 2: 2 Coding Questions
                Interview Experience
                Out of 20 MCQ's ,I think I solved 13-15 MCQ's Correctly. I solved easy MCQ's first and spent sometime on tough one's.
                MCQ's were simple to tough I/O questions ,OS Questions etc.
                In coding round they asked one D.P problem and one problem related to stack . I solved the stack question. So I can say
                I did OK on this round and got selected to Interview.
                Interview Tips
                Get comfortable with Data structures and Algorithms, and also have some basic idea of OS,DBMS.
                Round 2

                Technical Interview

                Interview Questions
                • Question 1: Questions based on resume and coding questions.
                Interview Experience
                The Interviewer was friendly and first he asked questions about my projects, previous internship etc .
                He then gave me a question related to B-Tree and asked me to tell the algorithm. First I gave naive solution, then he told me to improve efficiency. Though I took some time, I eventually arrived at a efficient solution. He asked to code that algo in any programming language. so I coded the algo in Java within 10 minutes. He went through my code thoroughly and corrected some minor mistakes. After this he asked if I have any questions for him, I then asked some questions related to work profile. After this round I was called for another techincal round. This round lasted for 50 minutes.
                Interview Tips
                I prepared from geeks for geeks for interviews and I think it helps a lot. Think out loud as Interviewer also observes your thought process.
                Round 3

                Technical Interview

                Interview Questions
                • Question 1: Questions from various courses I took which I mentioned in my resume.
                Interview Experience
                This round was a breeze as the Interviewer was very warm and he asked me various questions related to the courses
                I took. I think he asked questions related to prob theory,OS,discrete Maths etc. I answered most of them correctly.
                This round lasted for 45 minutes.
                Interview Tips
                As said above think out loud and have a good presence of mind. It helps if you revise the courses mentioned in your resume.
                Skills

                Skills Tested

                • Programming
                • problem solving
                Resources

                Preparation materials

                Books
                • Cormen,
                General Tips
                Practice programming a lot, preferably from Hacker rank etc. Come prepared for the Interview.

                Don't panic and have a fresh mind for interview
                Motivation for applying
                It's a good company,offering a decent stipend and one more thing it's in Hyderabad which is my hometown.
                Funny Moments
                Nothing that I remember of.
                Read Full post...
                10

                Amazon Area manager interview

                16.4k views
                Arko BasakFresherSelected
                Application
                I was interviewed on-campus at IIT Kharagpur for Area manager role at Amazon
                Interview Process
                Resume Shortlist Technical Interview Behavioural Interview HR Interview
                Round 1

                Resume Shortlist

                Interview Experience
                They shortlisted about 30 people from around 700 applications on the basis of CGPA, Internships, Projects. PORs and Extra Curricular Activities weren't much important to them.
                Interview Tips
                Keep a safe CGPA above 8.
                Round 2

                Technical Interview

                Interview Questions
                  Interview Experience
                  Mostly they grilled me on my Projects and internships. A strategy based warehouse case study was to be solved. Since I was from Industrial Engineering background they asked me on a scheduling problem. And lastly a few puzzles and they kept on increasing the intensity at each question. Later on, he asked me why not go for a MS or PhD and a situation where you have put mind over matter.
                  Interview Tips
                  Most of the interviewers were very cool and friendly. DO NOT PANIC.
                  Round 3

                  Behavioural Interview

                  Interview Questions
                    Interview Experience
                    They were simple life oriented questions. He asked me about my previous projects and BTP. Tell me about a situation you failed and why? Tell me a situation where you leaded a project? What experience do you have in industry? Why an e-commerce?
                    Interview Tips
                    Confidence is the key.
                    Round 4

                    HR Interview

                    Interview Questions
                      Interview Experience
                      Regular HR questions. Again a puzzle. Tell me about a situation where the project was going downhill but you took that to another level from that. They told me about the working hours and asked me for a location preference.
                      Interview Tips
                      Show your zeal. Dont fumble.
                      Skills

                      Skills Tested

                      • Data Handling Skills
                      • Logistics
                      • Data Interpretation
                      • Supply Chain Management
                      Motivation for applying
                      The best E-commerce to work for. And there is no place better ti gain such excellent management skills
                      Read Full post...
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