'Coding has over 700 languages', '67% of programming jobs aren’t in the technology industry', 'Coding is behind almost everything that is powered by electricity'
Amazon interview experience Real time questions & tips from candidates to crack your interview
SDE - Intern
Amazon
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3 rounds | 6 Coding problems
Interview preparation journey
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Preparation
Duration: 6 Months
Topics: Dynamic Programming, Graphs, LinkedList, Trees, BIt Manipulation
Tip
Tip

Tip 1 : I believe for cracking interviews data structures and algorithms is the only thing that needs to be practiced. 
Tip 2 : Rather than focusing on the number of questions focus on the quality of questions and different approaches for same question.
Tip 3 : The company wants to measure your problem solving skills not the number of submissions you have made on different platforms.

Application process
Where: Campus
Eligibility: Must be from CSE department, CGPA above 6
Resume Tip
Resume tip

Tip 1 : Make sure there are no grammatical errors. 
Tip 2 : Whatever projects you are listing on your resume, make sure you have in depth knowledge about those projects even if they are borrowed from somewhere else.

Interview rounds
01
Round
Easy
Online Coding Interview
Duration145 Minutes
Interview date15 Sep 2020
Coding problem2

the online round was conducted around 5 pm. Round 1 was the initial online round. It was made up of 4 sections - a code debugging section (20 minutes), a coding test (70 minutes), a workstyles assessment (20 minutes) and a reasoning ability section (35 minutes). For me the level of this online test was way below standard. Code debugging and aptitude part were very very easy. The coding questions that I got were also easy but there were a couple of good questions that other students got. But overall, the level was easy. I think the selection was made totally based on the workstyle assessment. Amazon focuses largely on its 14 leadership principles. Make sure to incorporate these principles in your answers. Again, do not start lying blatantly. Make smart and well thought out lies.

1. Subtree of Another Tree
Easy
10m average time
90% success
0/40
Asked in companies
Thought WorksInfo Edge India (Naukri.com)GE (General Electric)

Given two binary trees T and S, check whether tree S has exactly the same structure and node values with a subtree of T, i.e., check if tree S is a subtree of the tree T.

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2. Search In A Row Wise And Column Wise Sorted Matrix
Moderate
15m average time
80% success
0/80
Asked in companies
DirectiZomatoPaytm (One97 Communications Limited)

You are given an 'N * N' matrix of integers where each row and each column is sorted in increasing order. You are given a target integer 'X'.


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02
Round
Easy
Video Call
Duration120 minutes
Interview date7 Nov 2020
Coding problem3

This was the first technical interview. This is where it started to feel like Amazon. At first the interviewer gave his introduction, then I introduced myself and afterwards we moved to the coding part. He gave me three questions out of which I coded the solution for two and gave the approach for the third one. He was so helpful throughout the entire interview. I was stuck at the first questions and speaking out loud helped me there as he instantly realized what mistake I was making and quickly pointed it out. Out of all the interviews it was my best experience so far. For technical interviews at amazon you will have to prepare everything as they asked questions on almost all data structures. So, I would suggest you to do as much questions on leetcode as possible. Medium level questions would be enough according to me no need to do a lot of high-level questions. But if you are associated with pep coding then just do the class questions sincerely and you are good to go. Also, one thing I would like to add is to make sure that the variable names that you use are meaningful. Both my interviewers were very satisfied with my code and one of them even thanked me for writing clean code.

1. Maximum Of All Subarrays Of Size k
Easy
15m average time
85% success
0/40
Asked in companies
Info Edge India (Naukri.com)QualcommGoldman Sachs

You are given an array “A” of N integers. Your task is to find the maximum element in all K sized contiguous subarrays from left to right.

For Example:
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2. Chocolate Problem
Moderate
15m average time
85% success
0/80
Asked in companies
ShareChatJP MorganMicrosoft

Given an array/list of integer numbers 'CHOCOLATES' of size 'N', where each value of the array/li...

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3. First Repeated Character
Moderate
30m average time
70% success
0/80
Asked in companies
AmazonEcomExpressExpedia Group

You are given a string 'STR' of lowercase English alphabets. You need to find the repeated character present first in the string.

Example:
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03
Round
Medium
Video Call
Duration90 Minutes
Interview date7 Nov 2020
Coding problem1

This was the second technical round. In this round the emphasis was on time and space complexities. Luckily, I again got a very friendly interviewer who helped me a lot during the interview. The interview started with the introductions then we discussed about one of my projects. I was given only one question to solve which I did with the help of interviewer. There is not much difference between the technical round except the slightly greater emphasis on complexities in the second round.

1. Snake and Ladder
Moderate
30m average time
60% success
0/80
Asked in companies
Red HatUrban Company (UrbanClap)Flipkart

You have been given a Snake and Ladder Board with 'N' rows and 'N' columns with the numbers written from 1 to (N*N) starting from the bottom left of the board, and alternating direction e...

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