10+ Prolifics Corporation Interview Questions and Answers

To print the greater number without using a while loop, compare two numbers and print the larger one.

• Take two numbers as input

• Compare the two numbers

• Print the greater number

Use SQL query with ORDER BY and LIMIT to find the second highest salary of an employee.

• Use ORDER BY clause to sort the salaries in descending order.

• Use LIMIT 1,1 to skip the first highest salary and get the second highest salary.

Object-oriented programming concepts that focus on objects and classes for code organization and reusability.

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

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

• Polymorphism: Ability for objects of different classes to respond to the same message in different ways.

• Abstraction: Hiding the complex implementation details and showing only the necessary f...read more

Factors of a number are the numbers that can be multiplied together to get the original number.

• Factors of a number are all the numbers that divide the number without leaving a remainder.

• Every number has at least two factors: 1 and the number itself.

• Example: Factors of 12 are 1, 2, 3, 4, 6, and 12.

Use bitwise operations to find the maximum of two numbers

• Use bitwise operations like XOR and AND to compare and find the maximum of two numbers

• Example: int max = b ^ ((a ^ b) & -(a < b));

API stands for Application Programming Interface. It is used to define the methods for communication between different software components.

• API allows different software systems to communicate with each other

• It defines the methods and protocols for data exchange

• APIs can be used to access services or data from external sources

• Examples include Google Maps API for location services and Twitter API for social media integration

OOPs (Object-Oriented Programming) is a programming paradigm that uses objects to represent and manipulate data.

• OOPs focuses on creating reusable code by organizing data and behavior into objects.

• It follows the principles of encapsulation, inheritance, and polymorphism.

• Encapsulation hides the internal details of an object and provides a public interface.

• Inheritance allows the creation of new classes based on existing ones, inheriting their properties and behaviors.

• Polymorphis...read more

A program to reverse an array of strings

• Iterate through the array of strings

• For each string, reverse the characters

• Store the reversed strings in a new array

Architectural patterns guide the design of systems, ensuring scalability, maintainability, and performance based on prior experiences.

• Microservices architecture allows for independent deployment and scaling of services, e.g., Netflix uses this for its streaming service.

• Event-driven architecture enhances responsiveness and decouples components, as seen in systems like Amazon's order processing.

• Layered architecture separates concerns, making it easier to manage, e.g., the tradi...read more

The radius of a circle is the distance from the center of the circle to any point on its circumference.

• The radius is half the diameter of the circle.

• The formula to calculate the circumference of a circle is 2 * π * radius.

• The formula to calculate the area of a circle is π * radius^2.

Parts of JWT include header, payload, and signature.

• Header: Contains metadata about the token such as the type and hashing algorithm.

• Payload: Contains claims or information about the user.

• Signature: Used to verify that the sender of the JWT is who it says it is and that the message has not been tampered with.