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Amazon Software Developer Intern Interview Questions, Process, and Tips
Top Amazon Software Developer Intern Interview Questions and Answers
- Q1. Fish Eater There is a river which flows in one direction. One day, the river has 'N' number of fishes. You are given an array 'FISHES' of integers representing the size o ...read more
- Q2. Longest Increasing Subsequence For a given array with N elements, you need to find the length of the longest subsequence from the array such that all the elements of the ...read more
- Q3. Kth Smallest and Largest Element of Array You are given an array ‘Arr’ consisting of ‘N’ distinct integers and a positive integer ‘K’. Find out Kth smallest and Kth large ...read more
95 Amazon Software Developer Intern Interview Experiences
312 questions found
CodingNinjas
I was interviewed before Sep 2020.
3 Interview Rounds
Coding Test Round (2 Questions)
Round duration - 45 minutes
Round difficulty - Medium
The first Round was held on Hackerrank and the questions were of medium difficulty based on Data Structures and Algorithms.
The time of test was 1:00 PM and it was of 45 minutes with 2 coding questions to be solved.
- Q1. Merge overlapping intervals Given 'N' number of intervals, where each interval contains two integers denoting the boundaries of the interval. The task i...read more View Answers (2)
- Q2. Josephus ‘N’ people are standing in a circle numbered from ‘1’ to ‘N’ in clockwise order. First, the person numbered 1 will proceed in a clockwise direction and...read more View Answers (2)
Coding Test Round (2 Questions)
Round duration - 75 minutes
Round difficulty - Medium
A google Doc was shared with us and we were supposed to write code there.
Use of IDEs was not allowed so we had to write correct code on Google Docs which was later checked by them through online IDEs.
The Interviewer were friendly and observative and helped us through code if we made some silly error.
- Q1. Largest rectangle in a histogram You have been given an array/list 'HEIGHTS' of length ‘N. 'HEIGHTS' represents the histogram and each element o...read more View Answers (4)
- Q2. Boundary Traversal You have been given a binary tree of integers. Your task is to print the boundary nodes of this binary tree in Anti-Clockwise direction start...read more View Answers (1)
Face to Face Round (2 Questions)
Round duration - 60 minutes
Round difficulty - Medium
The face to face round was held on Google Meet where initially Interviewer asked a DS/Algo problem and then Later Manager Joined and asked about our resume projects in detail.
The time was 10:00 AM
- Q1. Maximum sum rectangle You are given an M X N matrix of integers ARR. Your task is to find the maximum sum rectangle. Maximum sum rectangle is a rectangle with t...read more View Answers (2)
- Q2. Rotated Array You're given a sorted array that has now been rotated 'K' times, which is unknown to you. Rotation here means that every element is sh...read more View Answers (2)
Interview Preparation Tips
Tip 1 : Prepare OS,DBMS,OOPs too
Tip 2 : Mention atleast one project or past work experience in your resume
Tip 3 : Try maintaining 8+ CGPA as sometimes shortlist is done based on CGPA
Tip 4 : Try past interview questions from Leetcode,Interviewbit.
Tip 1 : Try to Keep Resume 1 Pager
Tip 2 : Have atleast one project or past work experience mentioned
Tip 3 : Don't put false things on Resume as questions are asked in detail from Resume
Skills evaluated in this interview
I was interviewed before Sep 2020.
2 Interview Rounds
Coding Test Round (2 Questions)
Round duration - 120 minutes
Round difficulty - Medium
Debugging: This section contained 7 debugging problems, which were having code snippets that have logical error that needs to be analysed and recified.
Reasoning Ability: This section was aving medium level verbal reasoning questions and few aptitude questions.
Coding: This section was having 2 coding problems to be resolved.
- Q1. Search in a row wise and column wise sorted matrix You are given an N * N matrix of integers where each row and each column is sorted in increasing order. You a...read more View Answers (3)
- Q2. Delete N nodes after M nodes of a linked list You have given a singly linked list and two integers 'N' and 'M'. Delete 'N' nodes after e...read more View Answers (1)
Video Call Round (4 Questions)
Round duration - 55 minutes
Round difficulty - Medium
The interviewer was very friendly and started asking me questions by making me comfortable.
- Q1. Print Like A Wave For a given two-dimensional integer array/list ‘ARR’ of size (N x M), print the ‘ARR’ in a sine wave order, i.e., print the first column top t...read more View Answers (1)
- Q2. Rearrange Array Numbers to form Largest Possible Number You are given an array(ARR) of length 'N', consisting of non-negative integers. Using only these...read more View Answers (1)
- Q3. DBMS Question
Explain ACID properties
Add Answer - Q4. OOP Questions 1.What is the difference between static polymorphism and runtime polymorphism? 2. What is a copy constructor? Tell any one use of it. 3. Define in...read more Add Answer
Interview Preparation Tips
Tip 1 : Here I would like to advise practicing many questions on data structures, DBMS and algorithms as you can because it is the question practice that would help you in building your concepts strong. I practiced a lot of questions on Interview from all modules of data structures and algorithms because there you can find the recent interview questions that you should know. It is the main crux of any interview
Tip 2 : Go through Leetcode in details as it has a good variety of questions sorted on topic wise difficulty level where you can try to solve at least 40 questions for each data structure, DBMS and algorithm. Regularly participate in the contests happening normally on weekly basis there so that you could know about your weak areas to improve. This will boost your confidence.
Tip 3 : Also clear about some basic concepts of Operating systems and Databases along with coding , that would help in your interviews. One more thing is that do some good research about the company's goal and vision and be prepared to ask some company-related knowldege and queries that show your interest in the company. This shows your interest about the company
Tip 1 : Your Resume should consist of as many as good skills, projects, and achievements and award won, if any. Projects would play a crucial part in your interview and you should have at least one most relevant and good project that shows how strong your concepts are in development. The good project gives you an added advantage.
Tip 2 : Never fake on your resume and like If you have worked upon some technology for the project part only and don't know the proper depth you could write basics only in your resume. If an misleading information is provided by you than you are going to caught as you will not be able to explain if any question is asked around that.
Skills evaluated in this interview
Get interview-ready with top interview questions
I was interviewed before Sep 2020.
3 Interview Rounds
Coding Test Round (2 Questions)
Round duration - 75 minutes
Round difficulty - Medium
The round was conducted on Hackerrank and I was at home(around 10am) giving this round in Online mode.
This round consists of two coding questions and the duration was 75 minutes.
During this round camera and microphone of my laptop is active.
- Q1. Distinct palindromic sub-strings of a string You have been given a string STR. Your task is to find the total number of palindromic substrings of STR. Example :...read more View Answers (5)
- Q2. Subsequences of String You are given a string 'STR' containing lowercase English letters from a to z inclusive. Your task is to find all non-empty possi...read more View Answers (2)
Video Call Round (2 Questions)
Round duration - 40 minutes
Round difficulty - Medium
This was an online face to face technical round conducted on Hirepro platform. There is an editor in this platform itself, so we have to submit and run our code and also we have to explain the code and approach to the interviewer.
The interview starts with the introduction, then he asks questions on my project. I have developed my project in Python language (Django Framework)
- Q1. DBMS
We have data of employees of a company and we have to remove the duplicate entries of emails.
Add Answer - Q2. OOPS
1. What are access modifiers.
2. Pillars of OOPS
3. Abstraction
4. Static Binding and Dynamic Binding.Add Answer
HR Round (2 Questions)
Round duration - 20 minutes
Round difficulty - Medium
This was an online face to face HR round conducted on Hirepro platform.
HR first introduce me about the company and company's goals and then she start asking HR questions to me.
- Q1. General Questions
Introduce yourself?
Why Amazon?
Where do you see yourself in 5 years?
View Answers (1) - Q2. General Questions
Mention skill and weaknesses
View Answers (1)
Interview Preparation Tips
Tip 1 : Practice atleast 30 questions of each topic of DSA
Tip 2 : Do practice OOPS thoroughly for the interview part. For the coding round practice arrays, strings, linked list and trees as much as you can.
Tip 3 : Make a blue print of Operating system note while preparing it and just revise it before your interview and coding round.
Tip 1 : You must include only those things in your resume, in which you will be able to answers almost all questions
Tip 2 : Make atleast two projects and include them in the resume, because many time interviewer put all his time discussing projects only. So if you have a command on your project, then it will be beneficial for you.
Skills evaluated in this interview
What people are saying about Amazon
I was interviewed before Sep 2020.
3 Interview Rounds
Coding Test Round (2 Questions)
Round duration - 90 minutes.
Round difficulty - Hard
- Q1. Longest Increasing Subsequence For a given array with N elements, you need to find the length of the longest subsequence from the array such that all the elemen...read more View Answers (7)
- Q2. Count Inversions For a given integer array/list 'ARR' of size 'N', find the total number of 'Inversions' that may exist. An inversion is...read more View Answers (5)
Video Call Round (3 Questions)
Round duration - 60 minutes
Round difficulty - Medium
This was held on Amazon Chime and the interview lasted for 1 hour. Firstly the interviewer asked to introduce about myself, later asked regarding the projects I have mentioned in my resume. Then started displaying the coding question. The first question is related to Strings. Given a string, find any of its permutation or anagram is a palindrome or not. The second question is Given an array of integers, find the length of the longest increasing subsequence. After solving both the questions in the optimized approach, the interviewer asked me for the 3rd question because we were still having time. The third question is Given a string with no separator, find the missing number in the string.The interviewer was very friendly.
- Q1. Anagram Pairs Pre-requisites: Anagrams are defined as words or names that can be formed by rearranging letters of another word. Such as "spar" can be ...read more View Answers (4)
- Q2. Longest Increasing Subsequence For a given array with N elements, you need to find the length of the longest subsequence from the array such that all the elemen...read more View Answers (6)
- Q3. Given a string with no separator, find the missing number in the string You had a sequence of consecutive nonnegative integers. You appended all integers at the...read more View Answers (3)
Video Call Round (1 Question)
Round duration - 90 minutes
Round difficulty - Medium
This was held on Amazon Chime and the interview lasted for 1 hour. Firstly the interviewer asked to introduce about myself, later asked regarding the projects I have mentioned in my resume. Then started displaying the coding question. The first question is number of islands in a matrix.
- Q1. Find Number of Islands You are given a 2-dimensional array/list having N rows and M columns, which is filled with ones(1) and zeroes(0). 1 signifies land, and 0...read more View Answers (3)
Interview Preparation Tips
Tip 1 : Prepare Data Structures and Algorithms well. They mostly check our Problem Solving ability to find the solutions for the real world problems.
Tip 2 : Be enough confident, don't be nervous. Maintain atleast 2 projects in your resume.
Tip 3 : Even if you are stuck in the problem, just give a try. The interviewer will help you definitely for sure.
Tip 1 : Have atleast 2 projects with the latest technologies.
Tip 2 : You should be able to answer each and every thing present in your resume. Don't lie in your resume.
Skills evaluated in this interview
Amazon interview questions for designations
I was interviewed before Sep 2020.
2 Interview Rounds
Coding Test Round (2 Questions)
Round duration - 90 MINUTES
Round difficulty - Medium
- Q1. Total unique paths You are present at point ‘A’ which is the top-left cell of an M X N matrix, your destination is point ‘B’, which is the bottom-right cell of ...read more View Answers (4)
- Q2. Longest Increasing Subsequence For a given array with N elements, you need to find the length of the longest subsequence from the array such that all the elemen...read more View Answers (4)
Video Call Round (3 Questions)
Round duration - 60 minutes
Round difficulty - Hard
This was held on Amazon Chime and the interview lasted for 1 hour. Firstly the interviewer asked to introduce about myself, later asked regarding the projects I have mentioned in my resume.There were 2 interviewers. Then started displaying the coding question. The first question is related to Matrices. Find a pair with maximum product in array of Integers.The second question is Given an treeWrite a Program to Find the Maximum Depth or Height of a Tree.After solving both the questions in the optimized approach, the interviewer asked me for the 3rd question because we were still having time. The third question is Given a string with no separator, find the missing number in the string.The interviewer was very friendly.
- Q1. Maximum Product Subarray You are given an array “arr'' of integers. Your task is to find the contiguous subarray within the array which has the largest ...read more View Answers (3)
- Q2. Height of the Binary Tree You have been given the Inorder Traversal and Level Order Traversal of a Binary Tree of integers. Your task is to calculate the height...read more View Answers (2)
- Q3. Find Missing Number In String You had a sequence of consecutive nonnegative integers. You appended all integers at the end of each other to form a string ‘S’ wi...read more View Answers (1)
Interview Preparation Tips
Tip 1 : Regular coding practice on GFG, Leetcode and coding ninjas type platforms( Don't be nervous if you wont get in one try.Try until you get)
Tip 2 : Be enough confident, Do not loose hope,Maintain atleast 2 projects in your resume.
Tip 3 : Even if you are stuck in the problem, just give a try. The interviewer will help you definitely for sure.
Tip 1 : Make Sure that your resume is simple and also try to fit all the information in only one page.
Tip 2 : Have atleast 2 projects with the latest technologies,Github link of projects should be provided
Skills evaluated in this interview
I was interviewed before Sep 2020.
4 Interview Rounds
Coding Test Round (2 Questions)
Round duration - 90 minutes
Round difficulty - Medium
The online test consists of around 28 MCQs and 2 programming questions.
- Q1. Check Subset You are given two integer arrays ARR1 and ARR2 of length N and M respectively. You have to return true if ARR2 is a subset of ARR1, otherwise, retu...read more View Answers (2)
- Q2. Kth Smallest and Largest Element of Array You are given an array ‘Arr’ consisting of ‘N’ distinct integers and a positive integer ‘K’. Find out Kth smallest and...read more View Answers (4)
Video Call Round (2 Questions)
Round duration - 60 minutes
Round difficulty - Medium
It was scheduled a week in advance. The interviewer was very kind and helpful.
- Q1. Longest Path You are given a Directed Acyclic Graph (DAG) with ‘E’ edges and ‘V’ vertices. A DAG is a type of graph with no directed cycles. You have been given...read more View Answers (3)
- Q2. LRU Cache Implementation Design and implement a data structure for Least Recently Used (LRU) cache to support the following operations: 1. get(key) - Return the...read more View Answers (3)
Video Call Round (1 Question)
Round duration - 60 minutes
Round difficulty - Medium
The round consisted of 1 coding question and few c++ and oops concepts were asked.
- Q1. String Transformation Given a string (STR) of length N, you have to create a new string by performing the following operation: Take the smallest character from ...read more View Answers (3)
Video Call Round (2 Questions)
Round duration - 60 minutes
Round difficulty - Medium
I was asked 2 questions in this round along with some core concepts. This was my last round.
- Q1. Sorted Linked List to Balanced BST You have been given a singly linked list in which nodes are present in increasing order. Your task is to construct a Balanced...read more View Answers (3)
- Q2. Delete mid element from stack You are having a stack "ARR" of size 'N+1', your task is to delete the middlemost element so that the size of re...read more View Answers (3)
Interview Preparation Tips
Tip 1 : You should have excellent problem solving skills
Tip 2 : Code a lot.
Tip 3 : You should be thorough with your concepts of Data Structures and Algorithm.
Tip 4 : Know the complexities of the code that you’ve written.
Tip 1 : Mention your important projects in detail
Tip 2 : Keep it precise and concise
Skills evaluated in this interview
Anonymous
I applied via Company Website and was interviewed before Nov 2021.
2 Interview Rounds
Resume Shortlist Round
Technical Round (2 Questions)
- Q1. Find cousine of a node in a binary tree View Answers (1)
- Q2. One question on 2 pointer appraoch Add Answer
Interview Preparation Tips
Skills evaluated in this interview
I was interviewed before Sep 2020.
3 Interview Rounds
Coding Test Round (2 Questions)
Round duration - 90 minutes
Round difficulty - Easy
This was an online technical round on the mettl platform, the test window was open from 22 to 25 May 2020
The test had 28 mcqs and 2 coding questions.
The test was proctored. One needed to have webcam on.
A sample test link was provided before test to get familiar with the mettl platform.
- Q1. Count inversions For a given integer array/list 'ARR' of size 'N', find the total number of 'Inversions' that may exist. An inversion is...read more View Answers (4)
- Q2. Find pair with maximum GCD in an array You are given an array of positive integers. Find the GCD(Greatest Common Divisor) of a pair of elements such that it is ...read more View Answers (3)
Video Call Round (3 Questions)
Round duration - 60 minutes
Round difficulty - Medium
Time : 12pm to 1pm
Mode of Interview : Amazon Chime Video
LiveCode : To write code, it was not a compiler
The interviewer was quite supportive.
- Q1. Array Queries Given an array A( all 0 values initially) of size n, given q queries(query eg1: start = i, end =j)(here start and end are index such that you have...read more View Answers (1)
- Q2. Majority element You have been given an array/list 'ARR' consisting of 'N' integers. Your task is to find the majority element in the array. If ...read more View Answers (4)
- Q3. Subarray with equal occurrences You have been given an array/list ARR of length N consisting of 0s and 1s only. Your task is to find the number of subarrays(non...read more View Answers (3)
Video Call Round (2 Questions)
Round duration - 60 minutes
Round difficulty - Medium
Time : 11 am to 12am
Mode of Interview : Amazon Chime Video
LiveCode : To write code, it was not a compiler
The interviewer was quite supportive.
- Q1. Sorted linked list to balanced BST You have been given a singly linked list in which nodes are present in increasing order. Your task is to construct a Balanced...read more View Answers (3)
- Q2. Implement Stack with Linked List You need to implement the Stack data structure using a Singly Linked List. Create a class named 'Stack' which supports ...read more View Answers (1)
Interview Preparation Tips
Tip 1 : Practice questions from all the topics as much as possible
Tip 2 : Be very much attentive while doing projects in college or anywhere, they are asked in detail if mentioned in resume.
Tip 3 : Be consistent while practicing and do a variety of questions rather than doing more questions of same kind.
Tip 1 : You should know whatever you have mentioned in your resume. Don't brag in your resume ever. Be very precise. It doesn't matter how much you have done, what matters is you are very much confident and clear about what you have done.
Tip 2 : Put your projects and the language you code in for sure in your resume.
Skills evaluated in this interview
I was interviewed before Sep 2020.
3 Interview Rounds
Coding Test Round (2 Questions)
Round duration - 90 minutes
Round difficulty - Medium
25 mcqs and 2 coding questions
(It was a part of Amazewow process via Amazewit https://www.amazewit.in/)
Timing- any time between 22-24 may 2020
Webcam was on.
- Q1. Longest Decreasing Subsequence You are given an array/list ARR consisting of N integers. Your task is to find the length of the longest decreasing subsequence. ...read more View Answers (5)
- Q2. Next Greater Element You are given an array arr of length N. You have to return a list of integers containing the NGE(next greater element) of each element of t...read more View Answers (2)
Video Call Round (2 Questions)
Round duration - 60 minutes
Round difficulty - Medium
It held at morning 10 AM.
The interviewer was very friendly.
I was asked to solve 2 coding questions and was continuously provided with hints by the interviewer.
Question was on Array and Trees.
- Q1. Students are standing in the row. given an input of weights of children find the position of a child, such that all students lighter to him are in his left and ...read more View Answers (1)
- Q2. Transform BST to greater sum tree You have been given a Binary Search Tree of integers. You are supposed to convert it to a greater sum tree such that the value...read more View Answers (3)
Video Call Round (2 Questions)
Round duration - 45 minutes
Round difficulty - Hard
Morning 8 AM.
The interviewer was very friendly provided with various hints.
It was covering complex coding questions on Tree Data Structures.
- Q1. Time to Burn Tree You have been given a binary tree of 'N' unique nodes and a Start node from where the tree will start to burn. Given that the Start no...read more View Answers (3)
- Q2. Distance between nodes of a binary tree Given a binary tree and the value of two nodes, find the distance between the given two nodes of the Binary Tree. Distan...read more View Answers (3)
Interview Preparation Tips
Tip 1: Code More
Tip 2: Study Data Structures
Tip 3: Be Confident
Tip 1: Mention only what you are confident about
Tip 2: Mention tools & technologies used in the project as well
Skills evaluated in this interview
I was interviewed before Sep 2020.
3 Interview Rounds
Coding Test Round (2 Questions)
Round duration - 2 hour 30 mins
Round difficulty - Easy
Debugging: This section had 7 debugging problems, which consist of code snippets that have some logical error that needs to be rectified.
Reasoning Ability: This section consists of some verbal reasoning questions and some aptitude questions.
Coding: This section consists of 2 coding problems.
- Q1. Search in a row wise and column wise sorted matrix You are given an N * N matrix of integers where each row and each column is sorted in increasing order. You a...read more View Answers (4)
- Q2. Clone Linked List with Random Pointer Given a linked list having two pointers in each node. The first one points to the next node of the list, however, the othe...read more View Answers (4)
Video Call Round (2 Questions)
Round duration - 60 minutes
Round difficulty - Medium
Around 30 candidates were shortlisted from my campus and over 150+ candidates were shortlisted from the university, and I was one of them. Then my first round of interviews was scheduled. I was pretty nervous before the interview.
- Q1. Return in Row wave form You are given a 2D array with dimensions ‘N*M’. You need to read the array elements row-wise and return a linear array that stores the ...read more View Answers (2)
- Q2. Construct a strict binary tree You have been given an array/list of integers, let’s say ‘PRE’, which represents the preorder traversal of a strict binary tree ...read more View Answers (2)
Video Call Round (1 Question)
Round duration - 60 minutes
Round difficulty - Medium
My interviewer introduced himself in the beginning and asked for my introduction.
- Q1. Alien Dictionary. You have been given a sorted (lexical order) dictionary of an alien language. Write a function that finds the order of characters in the alien...read more View Answers (3)
Interview Preparation Tips
Tip 1 : Practice ds and algo
Tip 2 : Be confident
Tip 3 : Speak out loud and Be clear
Tip 1 : Mention only what you know
Tip 2 : Having Cp ranks is a plus
Skills evaluated in this interview
Amazon Interview FAQs
The duration of Amazon Software Developer Intern interview process can vary, but typically it takes about 2-4 weeks to complete.
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Interview Process at Amazon Software Developer Intern
based on 30 interviews in last 1 year
2 Interview rounds
- Coding Test Round
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