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Infosys Software Development Engineer Interview Questions and Answers
Infosys Software Development Engineer Interview Experiences
3 interviews found
Anonymous
I applied via Company Website and was interviewed in Jan 2021. There were 3 interview rounds.
Interview Questionnaire
3 Questions
- Q1. What are React Lifecycle methods ?
- Ans.
React Lifecycle methods are special methods that are invoked at different stages of a component's life cycle.
Mounting: constructor, render, componentDidMount
Updating: render, componentDidUpdate
Unmounting: componentWillUnmount
Error Handling: componentDidCatch
Other methods: shouldComponentUpdate, getDerivedStateFromProps, getSnapshotBeforeUpdate
- Q2. Explain difference between class and functional components.
- Ans.
Class components are ES6 classes while functional components are functions.
Class components have state and lifecycle methods while functional components don't.
Functional components are simpler and easier to read and test.
Functional components are preferred for simple UI components while class components are used for complex UI components.
Functional components don't have 'this' keyword while class components do.
Function
- Q3. Unit Testing tools like Jest, Enzyme.
Interview Preparation Tips
Skills evaluated in this interview
Interview Questionnaire
1 Question
- Q1. Core java, multi threading.
I applied via Recruitment Consultant and was interviewed in Feb 2021. There were 3 interview rounds.
Interview Questionnaire
1 Question
- Q1. How to interview face
Interview Preparation Tips
What people are saying about Infosys
Interview questions from similar companies
I was interviewed before Sep 2020.
(1 Question)
Round duration - 140 minutes
Round difficulty - Medium
Test timing was at 2:00 pm , it was conducted in a college and the environment was good for the test. Camera was a primary part of test, so no suspicious activity.
- Q1.
Sum of Two Numbers Represented as Arrays
Given two numbers in the form of two arrays where each element of the array represents a digit, calculate the sum of these two numbers and return this sum as an ar...
- Ans.
Given two numbers represented as arrays, calculate their sum and return the result as an array.
Iterate through the arrays from right to left, adding digits and carrying over if necessary
Handle cases where one array is longer than the other by considering the remaining digits
Ensure the final sum array does not have any leading zeros
Round duration - 20 minutes
Round difficulty - Easy
The round was conducted at around 12 p.m. I was called at the college location and then it was conducted. The interviewer was quite polite and frank.
Round duration - 8 minutes
Round difficulty - Easy
This round was conducted right after finishing and clearing the technical round at the same place and on the same day.
Interview Preparation Tips
Tip 1 : Practice atleast 2-3 Coding problems daily so your logic building becomes stronger.
Tip 2 : Exercise problems based on OOPS concepts and others too.
Tip 3 : If you can have your own project built, then it's the major point and will act as a plus point.
Tip 1 : Your resume should be in standard form, short and simple will be more effective.
Tip 2 : Whatever you have learned, you need to mention it in your resume as that will be your primary source of selection and having project on your resume is important.
Skills evaluated in this interview
I applied via Job Portal and was interviewed before Apr 2021. There was 1 interview round.
(1 Question)
- Q1. Solid principles in c#
- Ans.
Solid principles are a set of design principles for writing maintainable and scalable code in C#.
Single Responsibility Principle (SRP) - a class should have only one reason to change
Open/Closed Principle (OCP) - a class should be open for extension but closed for modification
Liskov Substitution Principle (LSP) - derived classes should be substitutable for their base classes
Interface Segregation Principle (ISP) - client...
Interview Preparation Tips
Skills evaluated in this interview
I applied via Campus Placement and was interviewed before Jul 2020. There were 4 interview rounds.
Interview Questionnaire
2 Questions
- Q1. Description of project
- Ans.
The project involved designing and implementing a new network infrastructure for a large corporation.
Conducted a thorough analysis of the existing network infrastructure
Designed a new network architecture that met the company's needs
Implemented the new network infrastructure with minimal disruption to business operations
Tested and optimized the new network to ensure optimal performance
Provided ongoing support and maint
- Q2. Your previous experince
Interview Preparation Tips
I applied via Naukri.com and was interviewed in Jul 2020. There were 3 interview rounds.
Interview Questionnaire
1 Question
- Q1. The questions were on front end web development questions with managerial interview
Interview Preparation Tips
I applied via Campus Placement and was interviewed before Jun 2020. There were 3 interview rounds.
Interview Questionnaire
2 Questions
- Q1. Simple program
- Q2. I wrote a simple program in C
Interview Preparation Tips
I applied via Campus Placement and was interviewed before Jun 2020. There were 3 interview rounds.
Interview Questionnaire
1 Question
- Q1. Tell me about Yourself, some questions related to machine learning, and I was asked more questions to differentiate like differences between ml and ai, python and c, c and java and procedural and functiona...
Interview Preparation Tips
I was interviewed before Jun 2021.
(2 Questions)
Round duration - 180 minutes
Round difficulty - Easy
It was an mcq + coding round. There were aptitude and ouput based question in mcq. And coding questions were easy
- Q1.
Find the Duplicate Number Problem Statement
Given an integer array 'ARR' of size 'N' containing numbers from 0 to (N - 2). Each number appears at least once, and there is one number that appears twice. Yo...
- Ans.
Find the duplicate number in an array of integers from 0 to (N-2).
Iterate through the array and keep track of the frequency of each number using a hashmap.
Return the number with a frequency greater than 1 as the duplicate number.
Time complexity can be optimized to O(N) using Floyd's Tortoise and Hare algorithm.
- Q2.
Reverse String Operations Problem Statement
You are provided with a string
Sand an array of integersAof sizeM. Your task is to performMoperations on the string as specified by the indices in arrayA... - Ans.
Given a string and an array of indices, reverse substrings based on the indices to obtain the final string.
Iterate through the array of indices and reverse the substrings accordingly
Ensure the range specified by each index is non-empty
Return the final string after all operations are completed
Round duration - 60 Minutes
Round difficulty - Easy
It was technical + hr round. there were 2 people as interviewer. They stated from intro and asked some basic puzzles and hr questions. After that they asked about my projects, technologies and some ds algo and dbms questions.
Interview Preparation Tips
Tip 1 : Practice aptitude
Tip 2 : Focus on practicing coding
Tip 3 : Learn from mistakes
Tip 1 : Mention some projects that you have done
Tip 2 : Try to have skills that are required for the role
Skills evaluated in this interview
Infosys Interview FAQs
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