'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 - 1
Amazon
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5 rounds | 11 Coding problems
Interview preparation journey
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Preparation
Duration: 6 months
Topics: Dynamic programming, Algorithms, OOPS, Data Structures, Operating System
Tip
Tip

Tip 1 : Listen carefully to what the interviewer expects from you. 
Tip 2 : Practice at least 300 questions, topic wise.
Tip 3 : Do participate in contests.

Application process
Where: Campus
Eligibility: No backlogs
Resume Tip
Resume tip

Tip 1 : Be true on your resume.
Tip 2 : Make your resume crisp and clear.

Interview rounds
01
Round
Medium
Online Coding Interview
Duration90 minutes
Interview date24 May 2020
Coding problem2
1. String Transformation
Moderate
23m average time
0/80
Asked in companies
WalmartSprinklrTech Mahindra
Problem approach
Try solving now
2. Count derangements
Moderate
35m average time
60% success
0/80
Asked in companies
Info Edge India (Naukri.com)OLX GroupCisco
Problem approach
Try solving now
02
Round
Medium
Video Call
Duration60 minutes
Interview date21 Jun 2020
Coding problem4

1 hour online interview. 
Slot was given prior via email.
The HR contacted me via email and simultaneously provided me a link where I had to write the codes during my interview

1. Mike and Mobile
Moderate
35m average time
45% success
0/80
Asked in companies
SAP LabsAckoUber
Try solving now
2. Maximum Subarray Sum
Moderate
25m average time
75% success
0/80
Asked in companies
Paytm (One97 Communications Limited)HCL TechnologiesDirecti
Problem approach
Try solving now
3. Maximum sum of non-adjacent elements
Moderate
15m average time
85% success
0/80
Asked in companies
Paytm (One97 Communications Limited)OLX GroupExpedia Group
Problem approach
Try solving now
4. Trapping Rainwater
Moderate
15m average time
80% success
0/80
Asked in companies
Paytm (One97 Communications Limited)AtlassianJP Morgan
Problem approach
Try solving now
03
Round
Medium
Video Call
Duration60 minutes
Interview date23 Jul 2020
Coding problem2
1. Strongly Connected Components (Tarjan’s Algorithm)
Hard
15m average time
85% success
0/120
Asked in companies
AtlassianSalesforceAmazon
Problem approach
Try solving now
2. Selling Stock
Moderate
22m average time
0/80
Asked in companies
HCL TechnologiesAmazonAtlassian
Problem approach
Try solving now
04
Round
Easy
Video Call
Duration60 minutes
Interview date29 Jul 2020
Coding problem2

This was a one hour round in which I was first told to introduce myself and then moved to questions.

1. Permutation in String
Hard
20m average time
80% success
0/120
Asked in companies
Info Edge India (Naukri.com)AmazonMicrosoft
Problem approach
Try solving now
2. Sort 0 1 2
Easy
22m average time
0/40
Asked in companies
OptumSamsung R&D InstituteTata Consultancy Services (TCS)
Problem approach
Try solving now
05
Round
Medium
Video Call
Duration60 minutes
Interview date10 Aug 2020
Coding problem1

This was based more on my communication skills rather than my technical skills. The interviewer didn't only focus on whether I knew the answer or not but if I was able to communicate my knowledge to the interviewer.

It was more of theory based interview
Questions are as follows:-
1. What are SQL and acid properties?

2. How does a website start?

3. What are deadlocks with real life examples? Give necessary conditions for deadlock. 
-> Real life examples were must. 

4. What is virtual function?

5. Tell me the most challenging this while you made your project. ( I had to pick my project on my own) 

6. Tell me the most interesting feature you found working on a language. 

7. Technical question on structures in C as I used it in my project. The interviewer asked if the structure for a linked list is changed as:-
struct node

{
int data;
struct next; 
};
I explained how this won't work as struct will be created again and again which will lead to memory limit exceeded.

1. Delete alternate nodes
Easy
20m average time
80% success
0/40
Asked in companies
MakeMyTripAmazonTata Consultancy Services (TCS)
Problem approach
Try solving now
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