Better.com Software Engineer Interview Questions and Answers

Its mostly on Train, Pipes and Cistern, Dice reasoning

Data Structures medium level question

An aptitude has exam used to determine an individual skills a given activity

Q1. Tell me about yourself
Ans. I am Jagan, from poonamallee, I have completed my bachelor degree in computer science from Anna University
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Q2. What is your strength
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Q3. What is your weakness
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Q4. Why did you decide to apply to this role?
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Q5. Why should I hire you?
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Low-level design interview
I need to design a Music player app using oops concept

Q1. Sort the stack in O(1) time complexity
Ans. 
Use an additional stack to store sorted elements and maintain the minimum element at the top of the original stack.
• Create a new stack to store sorted elements.

• Pop elements from the original stack and compare with the top element of the new stack.

• If the popped element is smaller, push it to the new stack. If larger, keep popping from the new stack and push to the original stack until the correct position is found.

• Repeat...read more
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Q2. Difference between process and thread
Ans. 
A process is an instance of a program running on a computer, while a thread is a smaller unit of execution within a process.
• A process has its own memory space, while threads within the same process share memory.

• Processes are independent of each other, while threads within the same process can communicate with each other.

• Processes are heavyweight, requiring separate memory and resources, while threads are lightweight an...read more
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Q3. Difference between abstract class and interface
Ans. 
Abstract class can have both abstract and non-abstract methods, while interface can only have abstract methods.
• Abstract class can have constructor, fields, and methods, while interface cannot have any of these.

• A class can implement multiple interfaces but can only inherit from one abstract class.

• Abstract class is used to provide a common base for multiple derived classes, while interface is used to define a contract fo...read more
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Q4. What is race condition?
Ans. 
A race condition is a situation in which the outcome of a program depends on the order of execution of its threads or processes.
• Occurs when multiple threads or processes access shared data or resources concurrently

• Can lead to unpredictable behavior or bugs in the program

• Prevented by using synchronization mechanisms like locks or semaphores

• Example: Two threads trying to increment a shared variable simultaneously
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Q5. What is normalization in dbms
Ans. 
Normalization in DBMS is the process of organizing data in a database to reduce redundancy and improve data integrity.
• Normalization involves breaking down a database into smaller, more manageable tables.

• It helps in reducing data redundancy by storing data in a structured way.

• There are different normal forms like 1NF, 2NF, 3NF, BCNF, etc.

• Example: In a database of students, instead of storing student details in multiple ...read more
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Q1. Explain Javascript ES6 features.
Ans. 
ES6 introduced new features to Javascript including arrow functions, let and const, classes, and template literals.
• Arrow functions provide a concise syntax for writing functions.

• Let and const are block-scoped variables.

• Classes provide a way to create objects with methods and properties.

• Template literals allow for string interpolation and multi-line strings.

• Destructuring allows for easy extraction of values from arrays ...read more
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Q2. How an angular application works.
Ans. 
Angular is a front-end framework that uses HTML, CSS, and JavaScript to build dynamic web applications.
• Angular uses components to create reusable UI elements

• It uses services to share data and functionality across components

• It has a powerful template system that allows for easy data binding and manipulation

• Angular uses RxJS for reactive programming and observables

• It has a built-in router for handling navigation between ...read more
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Q3. What are components in angular
Ans. 
Components in Angular are reusable building blocks that encapsulate HTML, CSS, and TypeScript code.
• Components are the basic building blocks of an Angular application

• They are reusable and can be used across multiple pages

• Each component has its own HTML, CSS, and TypeScript code

• Components can communicate with each other using @Input and @Output decorators

• Examples of components include navbar, footer, and login form
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Q1. How to set up the environment for building angular application
Ans. 
To set up the environment for building an Angular application, you need to install Node.js and Angular CLI.
• Install Node.js and npm

• Install Angular CLI using npm

• Create a new Angular project using CLI

• Run the project using ng serve command
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Q2. What is CI/CD pipeline
Ans. 
CI/CD pipeline is a process of continuous integration and continuous delivery/deployment of software.
• CI/CD pipeline automates the software delivery process.

• It involves continuous integration of code changes, automated testing, and continuous delivery/deployment of software.

• It helps in reducing errors and improving the quality of software.

• Popular CI/CD tools include Jenkins, Travis CI, and CircleCI.
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Q3. How comfortable are you learning and working on VueJS application
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Basic Math and English Questions

Q1. Basic Dot Net Interview Questions
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Q1. Mostly Salary Negotiation
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1 hour 10 mins, MERN Stack, Face to Face. Mongodb, medium DSA Question, callback, eventloop, NodeJS asynchronous working

Q1. Questions related to Java, AWS, Microservices
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Q2. Program to find 2 biggest number in array
Ans. 
Program to find 2 biggest numbers in array of strings
• Iterate through the array and convert each element to integer

• Keep track of the two biggest numbers found so far

• Return the two biggest numbers at the end
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Q1. Java related questions
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Q2. Design patterns
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