VIT Infotech Interview Questions and Answers

OOPs concepts are programming concepts that focus on objects and their interactions.

• Encapsulation - bundling data and methods that operate on that data

• Inheritance - creating new classes from existing ones

• Polymorphism - ability of objects to take on multiple forms

• Abstraction - hiding implementation details from users

• Example: A car object can have properties like color, model, and methods like start, stop, accelerate

• Exam...read more

Abstraction is hiding unnecessary details while encapsulation is hiding implementation details.

• Abstraction focuses on the outside view of an object while encapsulation focuses on the inside view of an object.

• Abstraction is achieved through interfaces and abstract classes while encapsulation is achieved through access modifiers like private, public, and protected.

• Abstraction is used to simplify complex systems while enc...read more

Reverse a given string using array of characters.

• Create an empty character array of the same length as the given string.

• Iterate through the given string and copy each character to the new array in reverse order.

• Convert the character array back to a string and return it.