Deltax Interview Questions, Process, and Tips

It was a MCQ test on CS Fundamentals. We have to answer 50 questions in 40 minutes. Accuracy is must. Company have its own cutoff and it's usually high. So try to gain maximum marks as possible. The results were announced in 1.5 hrs. The selected candidates will be appearing for the coding challenge.

There are 5 questions. 1 easy , 3 medium, 1 hard. You should solve atleast 4 questions to get shortlisted for the interview. Results are announced in 2-3 hours. Take a look at these questions. One of the questions from the coding challenge will be asked in the interview.

Q1. Email validation question from coding challenge
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Q2. Binary Search on rotated arrays
Ans. 
Binary search on rotated arrays involves finding a target value in a sorted array that has been rotated at an unknown pivot point.
• Identify the pivot point by finding the minimum element in the array.

• Determine which half of the array the target value falls into based on the pivot point.

• Perform binary search on the appropriate half of the array to find the target value.
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Q3. About projects (reason behind using the mentioned database)
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Q4. Use of package.json file
Ans. 
package.json file is used in Node.js projects to manage dependencies, scripts, and metadata.
• Contains project metadata like name, version, description, etc.

• Lists dependencies required for the project to run.

• Defines scripts for tasks like building, testing, and running the project.

• Can include configurations for tools like ESLint, Babel, etc.
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Q5. What are scripts in package.json file
Ans. 
Scripts in package.json file are commands that can be run using npm.
• Scripts are defined under the 'scripts' key in package.json.

• Common scripts include 'start', 'test', 'build', etc.

• Scripts can be run using 'npm run '.
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General test which you will be able to solve based on general aptitude questions and also another test that includes viewing video, and hearing test.

A video submission of how you would stratergise some question given by them.

Q1. General questions, and mathematical oral question/puzzles
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Q2. About your resume
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Q3. Marketing related questions
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Q1. General questions
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Q2. Some resume questions
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Q3. Puzzles, They keep pushing you to answer.
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This round is all about technical mcqs from theory subjects and programming. No aptitude, reasoning questions.

I have to solve 5 questions in 2 hrs.

Q1. Ask to solve a DP question given in the coding test.
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Q2. Ask to solve another medium level leetcode question.
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Q3. Ask about projects and Internship experienced.
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Q4. Ask OOPS questions.
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Q5. Ask me to design Zomato's dish rating feature.
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Had 50 qsns in 45 min

Had 5 qsns to execute topics like tress and graphs

Q1. Sql queries and how to extract the data
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Q2. Oops concepts and their execution
Ans. 
Oops concepts are fundamental principles of object-oriented programming that help in organizing and designing code efficiently.
• Encapsulation: Bundling data and methods that operate on the data into a single unit (class).

• Inheritance: Allowing a class to inherit properties and behavior from another class.

• Polymorphism: Ability of objects to take on multiple forms or have multiple behaviors.

• Abstraction: Hiding the complex ...read more
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Basics questions were asked,most of the questions were from previous year

Q1. Arithma and the operator
Ans. 
Arithma is a fictional company and the operator is a key component in their product.
• The operator is a crucial element in the functionality of Arithma's product.

• It is likely a symbol or function used for calculations.

• Examples of operators could include + (addition), - (subtraction), * (multiplication), / (division).
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Q2. JSON sanitizer:remove and sort
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Q3. Get me the query parameter
Ans. 
The query parameter is a part of a URL that contains data to be passed to a web server.
• Query parameters are added to the end of a URL after a '?'

• They are key-value pairs separated by '&'

• Example: www.example.com/search?q=product&category=electronics
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Q1. Questions on computer networks
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Q2. Questions on SQL queries and DSA
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