Infosys private limited interview experience Real time questions & tips from candidates to crack your interview

Digital Specialist Engineer

Infosys private limited
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3 rounds | 5 Coding problems

Interview preparation journey

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Journey
Throughout my college life, I enjoyed along with studying because without refreshing your brain, it cannot work well. I saw many people who just kept on study and didn’t focus on making friends and some enjoyment and now, they suffer a lot. Since my school days, I got interest in coding. It was a part of my school curriculum as well which increased my interest even more. As I came to college, I started learning new concepts in Java including Java GUI. I used to practice from ample of resources which are present online on various platforms like youtube and that helped manifold.
Application story
When infosys cane to campus, I got to know through my friends and then I applied to it. After some time, based on resume shortlisting, mails were sent out to selected people and then An assessment link was provided. It had some Mcqs based on maths, reasoning, English, Operating system, SQL and some C++ and Java related programming questions. After that, in second half, 2 coding questions with each of different difficulty level like: easy, medium. I was able to solve both fully. After sometime, I received a mail that I was shortlisted for the interview.
Why selected/rejected for the role?
Apart from solving the questions, I didn’t give up confidence if I got stuck at any part. Non technically, confidence is the kep to success and technically, language knowledge along with decent DSA is fine. Hence, I got selected based in these attributes
Preparation
Duration: 3 months
Topics: OOPS concepts, Java related important and fundamental questions, Data Structures in Java till medium level, Algorithms, Basic DP
Tip
Tip

Tip 1 : Never ignore basics and fundamentals of any language in which you are learning because they may ask any question related to that and also we seldom get a IDE in interview to write codes so, we need to look into syntaxes on our own.

Tip 2 : DSA is necessary no matter to what post you apply although, its difficulty level may vary from company to company and post to post.

Tip 3 : One should always go through previous interview experiences as they help a lot.

Tip 4 : Projects help a lot even if its a basic one.

Application process
Where: Campus
Eligibility: 7 CGPA
Resume Tip
Resume tip

Tip 1 : Some projects in resume make it stand out among a group so adding them is good.
Tip 2 : If you projects or internships are good, then try to add these sections before other sections because shortlisting people seldom go through whole resume and look for selected sections.

Interview rounds

01
Round
Medium
Online Coding Interview
Duration180 minutes
Interview date19 Feb 2021
Coding problem2

It happened from 10 am to 1 pm and It had some Mcqs based on maths, reasoning, English, Operating system, SQL and some C++ and Java related programming questions. After that, in second half, 2 coding questions with each of different difficulty level like: easy, medium. Camera and Microphone were on and tracked every small activity also.

1. Reduce Array Size to The Half

Easy
15m average time
85% success
0/40
Asked in companies
MeeshoPaytm (One97 Communications Limited)

Your friend gifted you ‘N’ balls. Each ball has a number associated with it, the numbers associated with the balls are given in the array 'ARR'. But your cupboard has slots such that only N/2 balls can be kept. So, you decided to remove the balls following an operation.

In one operation, you can select a ball numbered ‘x’ and remove all the balls which are numbered ‘x’.

You are supposed to minimize the number of operations such that at least half of the balls are removed from ‘N’ balls.

Note:

Numbers on the balls may not be unique.
Try solving now

2. Longest Substring Without Repeating Characters

Moderate
30m average time
65% success
0/80
Asked in companies
DunzoSliceCognizant

Given a string input of length n, find the length of the longest substring without repeating characters i.e return a substring that does not have any repeating characters.

Substring is the continuous sub-part of the string formed by removing zero or more characters from both ends.

Problem approach

It was a good question and firstly I used brute force solution. The, I started and then I used a hashmap solution which worked fabulously and cleared all test cases.

Try solving now
02
Round
Medium
Video Call
Duration80 minutes
Interview date31 Mar 2021
Coding problem2

Here, firstly introduction was asked and some resume based questions were asked. After that, interviewer started asking basic technical questions related to OOPS and Programming language(Java in my case). After he was over with this, he gave me 2 DSA based coding questions and asked me to solve it in 45 minutes approx. One was medium and one was hard.

1. Non-Decreasing Array

Moderate
35m average time
65% success
0/80
Asked in companies
Dell TechnologiesOptumCiti Bank

You have been given an integer array/list 'ARR' of size 'N'. Write a solution to check if it could become non-decreasing by modifying at most 1 element.

We define an array as non-decreasing, if ARR[i] <= ARR[i + 1] holds for every i (0-based) such that (0 <= i <= N - 2).

Try solving now

2. Find Number Of Islands

Moderate
34m average time
60% success
0/80
Asked in companies
MicrosoftAmazonUber

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 signifies water.

A cell is said to be connected to another cell, if one cell lies immediately next to the other cell, in any of the eight directions (two vertical, two horizontal, and four diagonals).

A group of connected cells having value 1 is called an island. Your task is to find the number of such islands present in the matrix.

Try solving now
03
Round
Easy
HR Round
Duration30 minutes
Interview date6 Apr 2023
Coding problem1

Basic introduction was asked and some basic HR related questions and it was a casual discussion.

1. Basic HR Questions

If I get in conflict with my senior, then what will I do?

If manager asks to work late night, what will I do?

Problem approach

Tip 1: be confident
Tip 2: avoid stumbling 
Tip 3: don’t give a controversial answer

Here's your problem of the day

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

Skill covered: Programming

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