WebAshlar Angular JS Developer Interview Questions and Answers

1 coding question based on DP for 25 minutes and 30 MCQs on Java , OOPS and code snippet questions also some basic questions based on trees like number of leaf nodes in a complete binary tree with n nodes.

Q1. Write code for finding palindrome of a string
Ans. 
Code to find palindrome of a string
• Iterate through the string from both ends and compare characters

• Use two pointers, one starting from the beginning and one from the end

• If characters at both pointers match, continue checking until they meet in the middle

• If all characters match, the string is a palindrome
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Q2. What is dynamic memory allocation in Java
Ans. 
Dynamic memory allocation in Java refers to the process of allocating memory for objects at runtime.
• Dynamic memory allocation allows for objects to be created and destroyed during program execution.

• The 'new' keyword is used to dynamically allocate memory for objects in Java.

• Dynamic memory allocation helps in managing memory efficiently by allocating memory only when needed.

• Example: int[] arr = new int[5]; dynamically a
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Q3. You are designing an e commerce website which database will you choose and what will you use for authentication given that you can't use JWT or even third party like Google authentication
Ans. 
I would choose a relational database like MySQL and implement a custom authentication system using session management.
• Choose a relational database like MySQL for storing user data, product information, and orders.

• Implement a custom authentication system using session management to securely authenticate users without JWT or third-party services.

• Use encryption techniques to store and validate user passwords securely.

• Util...read more
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Q1. Explain your work in current project
Ans. 
I am currently working on developing a web application for a client in the e-commerce industry.
• Developing front-end using React.js

• Implementing back-end functionalities using Node.js and Express

• Integrating payment gateway for online transactions

• Optimizing performance and user experience
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Q1. Explain the design of the current project
Ans. 
The current project is a web application for managing inventory and sales.
• The project uses a client-server architecture with a front-end built using React and a back-end built using Node.js and MongoDB.

• The front-end communicates with the back-end through RESTful APIs.

• The project includes features such as user authentication, product management, sales tracking, and reporting.

• The design follows a modular approach with se...read more
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Aptitude was very basic.

Q1. What is constant?
Ans. 
A constant is a value that does not change during the execution of a program.
• Constants are used to store values that remain the same throughout the program.

• They are declared using the 'const' keyword in many programming languages.

• Examples include mathematical constants like pi (3.14159) or physical constants like the speed of light (299,792,458 m/s).
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Q2. What is object oriented programming?
Ans. 
Object oriented programming is a programming paradigm based on the concept of objects, which can contain data and code.
• Objects are instances of classes, which define the structure and behavior of the objects.

• Encapsulation, inheritance, and polymorphism are key principles of object oriented programming.

• Example: Inheritance allows a subclass to inherit attributes and methods from a superclass.
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Q1. Salary Negotiation
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Q2. Work culture description
Ans. 
Our work culture is collaborative, innovative, and focused on continuous learning and growth.
• Encourages teamwork and open communication

• Emphasizes creativity and problem-solving

• Provides opportunities for professional development

• Values diversity and inclusion

• Promotes a healthy work-life balance
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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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Hackathon Test with 2 medium level coding question.

Technical Video Interview- Java concepts mostly related to Java 8, 1 coding program and some db questions were asked.

Q1. Questions related to System Design.
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Q1. Questions related to my projects . Some questions related to my current role and responsibilities.
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Basic program with stream

Q1. Microservice architecture
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Q2. Crud operations
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It had 3 questions, the level was medium hardish

Q1. There were 3 rounds of interviews, 2 technical and 1 HR, ln First round I was asked about OOPs, 2 medium level DSA questions, asked to write code on paper and explain the approach. Questions: 1. Given an ...read more
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Q1. Flatten a tree in right preorder
Ans. 
Flatten a tree in right preorder
• Traverse the tree in right-preorder (root, right, left)

• Use a stack to keep track of nodes

• Pop nodes from stack and add to result array
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