Bajaj Finserv Software Engineer Intern Interview Questions and Answers

Round duration - 90 minutes
Round difficulty - Medium

Online Technical Test (conducted early in morning in college campus)- consisted of MCQs from fundamentals of computer science like Operating Systems, DBMS, Networks, Programming and Data Structures

Online Coding Round (conducted early in morning in college campus)- Consisted of 2 questions to be coded in about 30-45 minutes of time(I don't remember te exact duration!)
The first question was based on basic logical thinking and some basic mathematics. The second one was based on Linked List in which we were expected to find the slope of the line whose coordinates were given in the node of the linked list.

Q1. Ninja and Mathematics
Ninja is a genius in mathematics. He got an interview call from MIT. During the interview, the professor asked Ninja a challenging question.
Given two integers 'N1' and '...read more
Ans. Remainder Theorm
The idea is to notice that the fractional part repeats only when we have already seen the same remainder before. So, that means we have to store the end index where this repetition starts in some data structure. 
 
We can use Map / HashMap / Dictionary to store the remainder and its associated index while doing division so that whenever the same remainder comes up, we know there is a repeating f...read more
Answered by CodingNinjas
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Q2. Find Slope
Given a linked list, whose nodes represent the coordinates of the cartesian plane. Find the minimum and the maximum slope of simultaneous points of coordinates.
Linked List : P1(X1, Y1) ->...read more
Ans. Recursive Solution
1. Initially maintain two variables, one for minimum slope and one for maximum slope.
2. Also, create variables to store coordinates corresponding to the minimum and maximum slope.
3. Set minimum slope variable value to maximum integer value and maximum slope variable to minimum integer value possible.
4. Now, traverse recursively through each pair of consecutive nodes using a helper function.
5. Set the base condition ...read more
Answered by CodingNinjas
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Q1. Project Architecture
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Q1. Informatica tech questions
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Question Related to the DP and the Graph

Q1. Kth Max Element in a Array
Ans. 
Find the Kth maximum element in an array of strings.
• Sort the array in descending order.

• Return the element at index K-1.
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Q2. Coin Change and optimization through DP
Ans. 
Coin change problem can be solved using dynamic programming to find the minimum number of coins needed to make a certain amount of change.
• Use dynamic programming to build up solutions for smaller subproblems

• Start by initializing an array to store the minimum number of coins needed for each amount from 0 to the target amount

• Iterate through each coin denomination and update the array with the minimum number of coins need
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Q1. Project include in your Resume
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Q2. HR common question
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Basic array and vectors DSA questions

Q1. Asked me about my past project and my contribution in it
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Q2. Linux commands and c++ language control
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Q3. Asked me to write last function i wrote and explain what it does
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Q1. Asked me about my past projects and my contribution
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Q2. Checked my work ethics
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Q1. Basic hr questions
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Q2. Salary negotiation
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Q1. Describe 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 and back-end using Node.js

• Implementing payment gateway integration for seamless transactions

• Optimizing website performance for better user experience
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Q1. Describe the current design of the project
Ans. 
The current design of the project is a microservices architecture with a front-end built using React and a back-end using Node.js.
• Microservices architecture is used for scalability and flexibility

• Front-end is developed using React for a dynamic user interface

• Back-end is built with Node.js for server-side logic
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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. Spring related questions
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Q2. Java related questions
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Q3. Couple of coding questions (Easy)
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DP graphs strings it was good

Q1. Reverse a linkded list
Ans. 
Reverse a linked list by changing the direction of pointers
• Start with three pointers: current, previous, and next

• Iterate through the list, updating pointers to reverse the direction

• Return the new head of the reversed list
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Q2. Print fibonacci series
Ans. 
The Fibonacci series is a sequence of numbers where each number is the sum of the two preceding ones.
• Start with two variables initialized to 0 and 1

• Loop through desired number of iterations, adding the previous two numbers to get the next number

• Print or store each number in the series
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