100+ Cognizant GenC Interview Questions and Answers

An array is a collection of elements of the same data type, stored in contiguous memory locations.

• Arrays can be of any data type, including integers, floats, and objects.

• Arrays are accessed using an index, starting from 0.

• Arrays can be initialized with a fixed size or dynamically resized.

• Example: string[] names = {"John", "Jane", "Bob"};

• Example: int[] numbers = new int[5];

• Example: object[] objects = new object[3] {1, "hello", true};

OOPs in Java is a programming paradigm that focuses on objects and their interactions.

• Encapsulation, Inheritance, Polymorphism, and Abstraction are the four pillars of OOPs in Java.

• Encapsulation is the process of hiding implementation details from the user.

• Inheritance is the process of inheriting properties and methods from a parent class.

• Polymorphism is the ability of an object to take on many forms.

• Abstraction is the process of hiding implementation details while showing on...read more

Object-oriented programming paradigm that focuses on data encapsulation, inheritance, and polymorphism.

• Encapsulation: bundling of data and methods that manipulate the data within a single unit

• Inheritance: ability of a class to inherit properties and methods from a parent class

• Polymorphism: ability of objects to take on multiple forms or behaviors depending on the context

• Examples: Java, C++, Python

Factorial code calculates the product of all positive integers up to a given number.

• Use a loop to multiply all positive integers up to the given number

• Handle edge cases like 0 and negative numbers

• Example: Factorial of 5 is 5*4*3*2*1 = 120