NCR Voyix Interview Questions, Process, and Tips

Q1. Explain Solid Principles
Ans. 
Solid Principles are a set of five design principles for writing clean, maintainable, and scalable code.
• Single Responsibility Principle (SRP) - A class should have only one reason to change.

• Open/Closed Principle (OCP) - Software entities should be open for extension but closed for modification.

• Liskov Substitution Principle (LSP) - Objects of a superclass should be replaceable with objects of its subclasses without affe...read more
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Q2. What are Design Patterns
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Design patterns are reusable solutions to common problems encountered in software design and development.
• Design patterns provide a way to communicate solutions to common design problems

• They help in making code more maintainable, scalable, and reusable

• Examples include Singleton, Factory, Observer, and Strategy patterns
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Q1. Explain the current project architecture you are working on.
Ans. 
Our current project architecture follows a microservices design pattern with Docker containers and Kubernetes for orchestration.
• Microservices architecture

• Docker containers

• Kubernetes for orchestration
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Q2. Why you are intrested in NCR
Ans. 
I am interested in NCR because of its reputation for innovation and cutting-edge technology in the software industry.
• NCR has a strong reputation for innovation and cutting-edge technology

• I am excited about the opportunity to work on challenging projects at NCR

• I believe NCR offers a great platform for career growth and development
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Write a program to print first and last letters of words alternatively from am list

Q1. Explain oops concept and it's pillars
Ans. 
OOPs stands for Object-Oriented Programming. It is based on four main pillars: Inheritance, Encapsulation, Abstraction, and Polymorphism.
• Inheritance: Allows a class to inherit properties and behavior from another class. Example: class B extends class A.

• Encapsulation: Bundling data and methods that operate on the data into a single unit. Example: using private access modifiers to restrict access to certain data.

• Abstract...read more
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Q2. Android architecture , thread v/s coroutine
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Q1. Asked linq question and answered correctly with little modification, still was not impressed
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Q2. Expections were little high.
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Q1. Loop in a linked list
Ans. 
Loop in a linked list refers to a situation where a node in the list points to a previous node, creating a cycle.
• Check for a loop using Floyd's cycle detection algorithm

• Use two pointers, one moving at twice the speed of the other

• If the two pointers meet at some point, there is a loop
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Q2. Delete the node in a linked list with given pointer
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To delete a node in a linked list with a given pointer, update the node's value and next pointer to the next node's value and next pointer.
• Set the value of the node to the value of the next node

• Set the next pointer of the node to the next node's next pointer
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Q1. Tell me about yourself
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Q2. Why you want to join NCR
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