Virtusa Software Services Software Developer Interview Questions and Answers

Q1. P2P process with golden rules
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Q2. Internal order types
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Q3. Withholding tax types
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Q1. What is a comparator?
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A comparator is a function that compares two objects to determine their ordering.
• Used in sorting algorithms to determine the order of elements

• Returns a negative value if the first object is less than the second, zero if they are equal, and a positive value if the first object is greater

• Commonly used in Java with the Comparator interface
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Q2. What is reentrant lock?
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A reentrant lock is a synchronization primitive that allows a thread to re-enter a critical section it already holds.
• Prevents deadlock by allowing a thread to acquire the lock multiple times

• Each lock acquisition must be followed by a corresponding release

• Commonly used in multi-threaded programming to protect shared resources
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Q1. Opps concept on spring boot
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OOPs concepts in Spring Boot refer to the principles of Object-Oriented Programming applied in the development of Spring Boot applications.
• Inheritance: Allows classes to inherit attributes and methods from other classes.

• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Polymorphism: Allows objects to be treated as instances of their parent class.

• Abstraction: Hides the implementation d...read more
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Q2. How docker works and kunermates
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Docker is a platform for developing, shipping, and running applications in containers. Kubernetes is an open-source system for automating deployment, scaling, and management of containerized applications.
• Docker allows developers to package applications and their dependencies into containers for easy deployment and scalability.

• Kubernetes helps in automating the deployment, scaling, and management of containerized applic...read more
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DSA questions and programming concepts

Q1. Reverse string and optimize it
Ans. 
Reverse array of strings efficiently
• Use two pointers approach to swap characters from start and end of each string

• Optimize by using in-place reversal instead of creating new strings

• Consider edge cases like empty strings or strings with only one character
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Q2. Reverse binary tree
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Q1. Salary expectations
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Q2. Joining location
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