Amazon interview experience Real time questions & tips from candidates to crack your interview
SDE - 1
Amazon
3 rounds | 4 Coding
problems
Selected Interview preparation journey
Journey
I kept practicing DSA and CS fundamentals from the 3rd year of Engineering. Along with it, I was also learning web development and I made some good projects. Amazon was the first company that visited our campus. I left no stone unturned, went through the previous interview experiences, polished my skills, and eventually cracked the very first interview that I sat down for in my life.
Application story
This company visited to my campus for the placement. We just had to upload resume and fill all details in the form. First, they took the online assessment. Later, they called us for the interview rounds.
Why selected/rejected for the role?
The basic reason for my selection was my strong knowledge of core DSA fundamentals and my problem-solving ability. I was selected because I had developed skills like DSA, problem-solving, and Logical building ability. I also prepared for the HR round because all the questions asked in the HR round I was already familiar with them. I was able to pick the hints given by interviewer and build my answers based on the hints provided.
Preparation
Duration: 2 months
Topics: Operating System, DSA, Computer Networks, OOPs, Algorithms, System Design
Tip 1 : Practice atleast 5-6 questions per day of DSA
Tip 2 : Do atleast 2-3 projects
Application process
Where: Campus
Eligibility: 7
Tip 1 : Put only those things on resume in which you have confidence
Tip 2 : Put only those projects which done by yourself.
Interview rounds
01
Round
Medium
Online Coding Test
Duration120 mins
Interview date4 Feb 2020
Coding problem2
It was a coding round of 2 hours.
You need to allow access for camera and microphone
1. House Robber
Moderate
26m average time
0/80
Asked in companies
A thief wants to loot houses. He knows the amount of money in each house. He cannot loot two consecutive houses. Find the maximum amount of money he can loot.
Problem approach
I applied binary search to solve this problem
2. Next Greater Number
Moderate
15m average time
90% success
0/80
Asked in companies
You are given a string S which represents a number. You have to find the smallest number strictly greater than the given number which contains the same set of digits as of the original number i.e the frequency of each digit from 0 to 9 should be exactly the same as in the original number.
For example:
If the given string is 56789, then the next greater number is 56798. Note that although 56790 is also greater than the given number it contains 1 '0' which is not in the original number and also it does not contain the digit '8'.
Note:
The given string is non-empty.
If the answer does not exist, then return -1.
The given number does not contain any leading zeros.
Problem approach
Stack implementation
02
Round
Medium
Video Call
Duration40 mins
Interview date5 Feb 2020
Coding problem1
The round was an technical face to face round.
They asked me problems related to DBMS, OS
1. DBMS Questions
Explain the functionality of the DML Compiler
What do you mean by asymmetric clustering
Different types of keys in SQL
03
Round
Easy
Video Call
Duration30 mins
Interview date5 Feb 2020
Coding problem1
1. System Design Question
Design YouTube/Netflix (a global video streaming service)
Design Search Typeahead
Here's your problem of the day 
Solving this problem will increase your chance to get selected in this company
Skill covered: Programming
How do you remove whitespace from the start of a string?
Choose another skill to practice
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