QR Solutions Software Developer Interview Questions and Answers

The aptitude test evaluates problem-solving, coding skills, and logical reasoning, offering a fair challenge to showcase technical expertise.

Q1. How do you handle conflicts in a team project?
Ans. 
I address conflicts in team projects by promoting open communication, active listening, and seeking compromise.
• Encourage open communication among team members to address conflicts early on

• Practice active listening to understand all perspectives and concerns

• Seek compromise and find common ground to resolve conflicts effectively
Answered by AI
Add your answer
Q2. What is the difference between an interface and an abstract class?
Ans. 
Interface is a contract that defines the methods a class must implement, while an abstract class can have both implemented and abstract methods.
• Interface can only have abstract methods and cannot have any implementation, while abstract class can have both abstract and implemented methods.

• A class can implement multiple interfaces but can only inherit from one abstract class.

• Interfaces are used to achieve multiple inheri...read more
Answered by AI
Add your answer

Q1. What is the difference between an abstract class and an interface in object-oriented programming?
Ans. 
Abstract class can have both abstract and non-abstract methods, while interface can only have abstract methods.
• Abstract class can have method implementations, while interface cannot.

• A class can implement multiple interfaces, but can only inherit from one abstract class.

• Interfaces are used to define contracts for classes to implement, while abstract classes are used to provide a common base for subclasses.

• Example: Abstr...read more
Answered by AI
Add your answer
Q2. Abstract classes can have implemented methods; interfaces can only have declarations (before JAVA 8).
Add your answer

Q1. 3 Question was there related to architecture and Computer networks.
Add your answer

Q1. Microservices and Monolith.
Add your answer
Q2. Leetcode hard Sum.
Add your answer

Aptitude questions with some basic coding questions

They have given 3 coding questions and some pseudo codings

Q1. Tell about your self
Add your answer
Q2. Some coding questions
Add your answer

Q1. All about core java
Add your answer
Q2. Front end and My Sql
Add your answer

It is easy to solve the Aptitude question and some identifying outputs of program.

Q1. What is class?and write a logic for object in a class.
Ans. 
A class is a blueprint for creating objects in object-oriented programming.
• A class defines the properties and behaviors of objects.

• An object is an instance of a class.

• Example: Class 'Car' can have properties like 'color' and 'model', and behaviors like 'drive' and 'stop'.
Answered by AI
Add your answer
Q2. 1.swap two numbers without using temp variable 2.Reverse the string.
Ans. 
Swap two numbers without using temp variable and reverse a string without using built-in functions.
• To swap two numbers without using temp variable, use bitwise XOR operation.

• To reverse a string without using built-in functions, use two pointers approach.

• Example for swapping numbers: a = a ^ b; b = a ^ b; a = a ^ b;

• Example for reversing a string: use two pointers to swap characters from start and end of the string.
Answered by AI
Add your answer

Now, I am preparing for the third round.
So, I don't know the Coding Question.

Easy aptitude, 30 min with 20 question

Q1. How would you design the working of a lift system, explain with the ds you would use
Ans. 
Designing a lift system using data structures
• Use a queue data structure to manage the order of requests for each floor

• Implement a priority queue to handle emergency stops or VIP requests

• Use a state machine to track the current status of the lift (moving, stopped, opening/closing doors)

• Maintain a list of floors the lift has visited to optimize route planning
Answered by AI
Add your answer