Ninjacart Junior Programmer Interview Questions and Answers

Apti and coding

Q1. Questions on java a d sql
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First round was coding test in online mode which was quite easy.

Q1. In the 2nd round they asked the technical questions from SQL , simple coding questions.
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Coding test has multiple choice questions based on basics of programming and 2 coding questions.

Q1. What are the details of Object-Oriented Programming (OOP) concepts?
Ans. 
OOP is a programming paradigm based on the concept of objects, which can contain data and code to manipulate that data.
• OOP focuses on creating objects that interact with each other to solve problems.

• Key concepts include classes, objects, inheritance, polymorphism, and encapsulation.

• Classes are blueprints for creating objects, defining their properties and behaviors.

• Inheritance allows new classes to be based on existing...read more
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Q2. DSA question to solve using any programming language ?
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Q3. Some concepts of web development and binary tree related questions
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Q1. What do you know about Digit insurance?
Ans. 
Digit Insurance is a technology-driven insurance company offering a range of general insurance products.
• Digit Insurance was founded in 2016 by Kamesh Goyal.

• It is known for its innovative and customer-centric approach to insurance.

• Digit offers various insurance products such as health insurance, motor insurance, travel insurance, and more.

• The company leverages technology to simplify the insurance process and provide a s
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Q2. Where do you see yourself after 5 years ?
Ans. 
In 5 years, I see myself as a senior software engineer leading a team of developers on innovative projects.
• Leading a team of developers on projects

• Continuing to learn and grow in my technical skills

• Contributing to the success and growth of the company

• Possibly pursuing further education or certifications

• Exploring opportunities for mentorship and leadership roles
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Q1. Create APIs for a Quiz platform
Ans. 
Create APIs for a Quiz platform
• Design RESTful APIs for creating, updating, deleting, and retrieving quizzes

• Include endpoints for managing quiz questions, answers, and user responses

• Implement authentication and authorization mechanisms for secure access

• Utilize JSON format for data exchange between client and server
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Design and code a parking lot application

Q1. Past work and digging around that. few changes in past work and how to implement them.
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Q1. How to ensure that there is no data corruption when data is being streamed and processed asynchronously
Ans. 
To ensure no data corruption during asynchronous streaming and processing, use data validation, error handling, and checksums.
• Implement data validation techniques to check the integrity of the streamed data.

• Handle errors and exceptions properly to prevent data corruption.

• Use checksums or hash functions to verify the integrity of the data.

• Implement reliable communication protocols like TCP/IP to ensure data integrity.

• Co...read more
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Longest substring without repetition

Q1. Find word with most frequency
Ans. 
Use a hashmap to count the frequency of each word in the array of strings and find the word with the highest frequency.
• Create a hashmap to store the frequency of each word

• Iterate through the array of strings and update the frequency in the hashmap

• Find the word with the highest frequency in the hashmap
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Q2. Spring boot concept
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