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Microsoft interview experience Real time questions & tips from candidates to crack your interview

SDE - Intern

Microsoft
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4 rounds | 6 Coding problems

Interview preparation journey

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Preparation
Duration: 3 months
Topics: Data Structures, Algorithms, Operating Systems, OOPS
Tip
Tip

Tip 1 : Focus on basic concepts while studying algorithms and data structures. On the other hand, there is some amount of mugging required in other topics like operating systems and OOPS.
Tip 2 : Your resume should be catchy and impressive. The recruiters will not be looking at your resume for more than 30-40 seconds, so try to mention some numbers (ranks in some coding events, GPA) which can impress the recruiters.
Tip 3 : For the last few days before your interviews, it is advised to read some previous interview experiences of the company for which you are about the give the interview.

Application process
Where: Campus
Eligibility: 8.00 GPA
Resume Tip
Resume tip

Tip 1 : Try to mention some numbers on your resume like ranks in various coding events, or engineering entrance exams because this makes it somewhat catchy. 
Tip 2 : Try to know everything you've written on your resume. So, don't try to put false things as it can go against you in the interview.

Interview rounds

01
Round
Medium
Online Coding Interview
Duration90 minutes
Interview date8 Aug 2020
Coding problem3

It started in the evening from around 6 pm and the total duration was 90 minutes. There were 3 coding questions of medium difficulty level. I think from a set of 10-12 questions, each student was given 3 questions randomly from that set. So it was somewhat luck dependent too if you get easy or difficult questions. Tab switching was not allowed during the test, also it was proctored through webcam.

1. Longest Palindromic Subsequence

Hard
45m average time
50% success
0/120
Asked in companies
MicrosoftQualcommHike

You have been given a string ‘A’ consisting of lower case English letters. Your task is to find the length of the longest palindromic subsequence in ‘A’.

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2. Find K’th Character of Decrypted String

Moderate
33m average time
0/80
Asked in companies
AmazonAdobeMicrosoft

You have been given an Encrypted String where repetitions of substrings are represented as substring followed by the count of substrings.

Exam...
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3. Maximum Subarray Sum

Moderate
35m average time
81% success
0/80
Asked in companies
AccentureSAP LabsDunzo

You are given an array 'arr' of length 'n', consisting of integers.


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02
Round
Medium
Video Call
Duration50 minutes
Interview date14 Aug 2020
Coding problem2

It was held on the Microsoft teams platform. It started at 5 pm in the evening and lasted till around 5:50 pm. It started with me giving a general introduction about what I had done till now in my college. After that, he started with the coding problems.

1. Total area of overlapping rectangles

Easy
10m average time
90% success
0/40
Asked in companies
MicrosoftSAP LabsOracle

You are given two arbitrary rectangles on a 2-D coordinate plane, which may have an intersecting area. You have to find the net area covered by both the rectangles on the cartesian plane.

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Problem approach

t was a general observation problem that required analysis of all possible cases in which the two rectangles could be oriented. I explained to him all cases by drawing the figures of all the possible cases on MS paint (my screen sharing was on).

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2. OS Questions

A basic theory question about mutex and semaphores.

Problem approach

Tip 1: Don't leave topics like operating systems, OOPS, etc. There are some amazing youtube playlists for them through which I studied them.

03
Round
Easy
Video Call
Duration50 minutes
Interview date14 Aug 2020
Coding problem1

The pattern was similar to the previous round. I started with my general introduction after which he proceeded to problem-solving. Also, there was some discussion about the projects I had done previously and also about my previous internship experience.

1. Find all triplets with zero sum

Moderate
30m average time
50% success
0/80
Asked in companies
GoogleFacebookDunzo

You are given an array Arr consisting of n integers, you need to find all the distinct triplets present in the array which adds up to zero.

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Problem approach

It was kind of a standard problem if you know basic STL. I used unordered maps to solve it in O(n*n).

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04
Round
Medium
Video Call
Duration70 minutes
Interview date14 Nov 2020
Coding problem0

All three interview rounds were conducted on the same day so by the time this round started, it was already around 11:30 pm. And it lasted a bit longer than previous rounds about 70 minutes or so. It started with a basic introduction and the interview also asked about my interests and how I spend my time at college. There was a discussion about my previous intern experience as well. At this point, I thought it was just a formality round and it would not involve and problem-solving but then he asked me to code for a problem.

Here's your problem of the day

Solving this problem will increase your chance to get selected in this company

What is the return type of a method that doesn't return any value?

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