Coderwa Technologies Software Engineer Interview Questions and Answers

Basic aptitude test very easy

Topic was pros and cons of social media
total time was 10, 2 minutes for each candidate.

Q1. What is a transaction in DBMS, what are ACID properties? Explain the difference between SQL and NoSQL databases. How would you optimize a slow running query?
Ans. 
A transaction in DBMS is a unit of work that must be executed as a whole. ACID properties ensure data integrity. SQL is relational, NoSQL is non-relational.
• A transaction in DBMS is a set of operations that must be executed as a single unit.

• ACID properties (Atomicity, Consistency, Isolation, Durability) ensure data integrity in transactions.

• SQL databases are relational and use structured query language, while NoSQL data...read more
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Q2. Define encapsulation and provide an example. Discuss the principles of inheritance and polymorphism.
Ans. 
Encapsulation is the concept of bundling data and methods that operate on the data into a single unit. Inheritance allows a class to inherit attributes and methods from another class. Polymorphism allows objects of different classes to be treated as objects of a common superclass.
• Encapsulation helps in data hiding and abstraction

• Example: A class 'Car' encapsulates data like make, model, and methods like start(), stop()

• ...read more
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Q3. Explain how to detect a cycle in a linked list.
Ans. 
Use Floyd's Tortoise and Hare algorithm to detect a cycle in a linked list.
• Start with two pointers, slow and fast, moving at different speeds.

• If there is a cycle, the two pointers will eventually meet at some point.

• If there is no cycle, the fast pointer will reach the end of the list.

• Example: 1->2->3->4->5->2 (cycle at node 2), slow and fast pointers will meet at node 2.
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Give the string and array related questions

Q1. Can you describe a challenging problem you've faced during a project and how you solved it?
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Q2. Tell me about your projects mentioned in the resume.
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Q3. Tell me about yourself
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Q4. Why are you interested in this -- position?
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Q5. What do you know about our company?
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Online Assessment - 1 Hrs

Basic aptitude questions were given

Moderate level coding questions from aaray,stack and linked lists

Q1. Oops concepts , java basic questions, projects
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Q2. Write a code for removing duplicate elements
Ans. 
Code to remove duplicate elements from an array of strings
• Create a set to store unique elements

• Iterate through the array and add elements to the set

• Convert the set back to an array to get unique elements
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Q1. Why mindtree? And how would you contribute to the company
Ans. 
I chose Mindtree because of its reputation for innovation and commitment to employee growth. I believe my strong technical skills and collaborative mindset would contribute to the company's success.
• I am impressed by Mindtree's track record of delivering cutting-edge solutions to clients.

• I value the company's focus on continuous learning and development for its employees.

• My experience in software development and problem...read more
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Q2. Final year project, who motivates you
Ans. 
My final year project was motivated by my passion for solving real-world problems and making a positive impact.
• Passion for solving real-world problems

• Desire to make a positive impact

• Inspiration from mentors or industry professionals

• Personal drive to excel and innovate
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Average level of the aptitude test

Two coding questions, two apti questions online video on

Q1. Tell me somenthi g about
Ans. 
I believe there might be a typo in the question. Could you please clarify?
• Ask for clarification on the specific topic or information the interviewer is looking for.

• Offer to provide more details or examples once the question is clarified.
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Q2. What is your name
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Q1. What is your name
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Q2. What is your address
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Q1. What is salary expect
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Q2. What is job expect
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The aptitude test was quite easy. You will easily solve the questions in one go

The group discussion around was moderate like the people were divided into different groups one group was of 10 people and you need to speak very well on the given topic as compared to the other guys and your through the round

Q1. Ask about the oops concepts and some programming related questions and after that finally discuss about the projects which I did in the college
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