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NJ Technologies Jr. Data Scientist Interview Questions and Answers
NJ Technologies Jr. Data Scientist Interview Experiences
1 interview found
I applied via Naukri.com and was interviewed before Sep 2022. There were 3 interview rounds.
(2 Questions)
- Q1. They went through college project and python questions
- Q2. Python coding basic questions
(2 Questions)
- Q1. Python coding basic questions
- Q2. Write class to have maths operation
- Ans.
Create a class for performing mathematical operations
Create a class with methods for addition, subtraction, multiplication, and division
Use instance variables to store operands and results
Include error handling for division by zero
Example: class MathOperations { int add(int a, int b) { return a + b; } }
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Selected
I appeared for an interview before Sep 2023.
Code was of leetcode medium level.
(2 Questions)
- Q1. Easy level DS code
- Q2. Question related to database
(3 Questions)
- Q1. Questions related to SQL
- Q2. Inner join of three tables
- Ans.
Inner join of three tables in SQL
Use the JOIN keyword to combine three tables based on a common column
Specify the columns to select from each table
Use the ON keyword to specify the join condition
- Q3. What is cross join
- Ans.
Cross join is a type of join operation in SQL that returns the Cartesian product of two tables.
Cross join does not require any matching condition between the tables.
It combines each row from the first table with every row from the second table.
Cross join can result in a large number of rows if the tables are big.
Example: SELECT * FROM table1 CROSS JOIN table2;
Skills evaluated in this interview
Java Developer Interview Questions & Answers
Prime Focus Technologies
Anonymous
posted on 29 Apr 2024
Selected
I applied via Website and was interviewed before Apr 2023. There were 3 interview rounds.
(1 Question)
- Q1. What you do? Description with analysis
- Ans.
I am a Java Developer responsible for designing, developing, and maintaining Java applications.
Design and develop Java applications
Write clean, efficient, and maintainable code
Collaborate with team members to troubleshoot and solve technical issues
(1 Question)
- Q1. Java,sql,python
(1 Question)
- Q1. What is your goal
I applied via Campus Placement and was interviewed before Jul 2021. There were 3 interview rounds.
General aptitude test with math and logic related questions. there were also coding questions which were given more weightage than the other questions.
(2 Questions)
- Q1. Standard linked list questions like finding the middle of a linked list, checking if the linked list is a loop etc
- Q2. Max heap related questions.
(1 Question)
- Q1. This interview was mostly math related questions. for eg: prove if a number is irrational.
Interview Preparation Tips
- Data Structures
- Maths
- puzzles
Interview Preparation Tips
Experience: A coding test (Students were asked to bring Laptops)
Tips: Be thorough with C/C++, networking, OS, Data structures and architecture
Duration: 90 minutes
Round: Interview
Experience: 3 rounds of interview, one hour each, all technical
Interview Process:All the three rounds are oriented around programming. A lot of focus was given to Data structures, C/C++, OS and algorithmsThe code from previous test is shown and they expect you to fix any bugs if thereThe interviewers are quietly friendly and help if you get stuck at any pointIf you do have any related projects, anticipate some thorough questions on that
Tips: Though the interviewers are helpful, get your basics clear early on. Don't rely on them.Practice coding sessions, a lot of companies have them as a shortlisting criteria.
College Name: IIT Madras
Interview Preparation Tips
Experience: PAPER DURATION: 3 hours
NO. OF QUESTIONS: 2 (20 marks each)
MAXIMUM MARKS: 20*2 = 40 marksQUESTION 1:
JSON Prettier:-Write a program which takes JSON as input and gives prettified JSONYou need to read JSON from STDIN. Input gives one line of uglified JSON.Output should be formatted JSON. Check the standard output link.Use 2 white spaces (not‘\t’) for one indentation.SAMPLE INPUT:{“group” : {list : [1,2,3]}, “list” : [“a”,”b”,”c”]}SAMPLE OUTPUT:{“group” : {List : [1,2,3]},“list” : [“a”,”b”,”c”]}EXPLANATION: Input will be uglifiedjson in one line and output will be prettified format of that. QUESTION 2:XML parse plus series computationEvaluate an expression given in XML format. Keys will be Expr- contains the entire expression. Elem – contains the digit, sum, Prod- contains two or more keys whose evaluation needs to be summed or multiplied respectively. Sub will contain 2 keys or more, where the second key onwards will have to be subtracted from the first one. Div- will contain 2 keys in which first key will need to be divided by second. SAMPLE INPUT:
20EXPLANATION:Input will be xml file through standard input. End of xml file marked by .
Duration: 180 minutes
Total Questions: 2
College Name: NA
I appeared for an interview before Jan 2021.
Interview Questionnaire
2 Questions
- Q1. Basic analysis questions
- Q2. Excel Based analysis as it was a entry-level position
Interview Preparation Tips
Read about the interviewer
Associate Software Engineer Interview Questions & Answers
Decimal Technologies
Anonymous
posted on 5 May 2024
Please check aptitude question in google
Related to Javascript
(1 Question)
- Q1. Expectations and why do you want to join?
Discussion related to company
Senior Software Engineer Interview Questions & Answers
Decimal Technologies
Yash Khanduri
posted on 24 Sep 2024
(2 Questions)
- Q1. Details of Kafka
- Q2. Concurrency questions
Software Engineer Interview Questions & Answers
Decimal Technologies
Pushpit Arora
posted on 4 Mar 2025
Selected
I appeared for an interview before Mar 2024.
(2 Questions)
- Q1. Can you provide an introduction about yourself?
- Ans.
I'm a passionate software engineer with a strong background in full-stack development and a love for solving complex problems.
Education: Bachelor's degree in Computer Science from XYZ University.
Experience: 3 years of experience in developing web applications using React and Node.js.
Projects: Developed an e-commerce platform that increased sales by 30% within the first quarter.
Skills: Proficient in JavaScript, Python, ...
- Q2. What qualifications have you obtained, and can you explain the project you completed during your engineering studies?
- Ans.
I hold a Bachelor's degree in Computer Engineering and developed a web-based project for managing student records.
Bachelor's degree in Computer Engineering from XYZ University.
Completed a capstone project on a web application for student record management.
Utilized technologies like HTML, CSS, JavaScript, and Node.js.
Implemented features such as user authentication, data visualization, and a responsive design.
Collaborat...
(2 Questions)
- Q1. Why do you believe this company is a suitable fit for you?
- Ans.
This company aligns with my values, offers growth opportunities, and fosters innovation, making it an ideal environment for my skills.
The company's commitment to innovation resonates with my passion for developing cutting-edge software solutions.
I admire the collaborative culture here, which I experienced during my interactions with the team during the interview process.
The emphasis on professional development and cont...
- Q2. Do you have any questions
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NJ Technologies Interviews By Designations
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NJ Technologies Jr. Data Scientist Interview Process
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