Interview Questions and Answers

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

• It allows objects of different classes to be treated as if they were objects of the same class.

• It is achieved through method overriding and method overloading.

• Example: A shape class can have multiple subclasses like circle, square, triangle, etc. All these subclasses can have a draw() method, but each subclass will implement it differently.

• Another example is the + operator in Python. It can be used to add two inte...read more

Data encapsulation is the process of hiding implementation details and exposing only necessary information.

• It is a fundamental concept in object-oriented programming.

• It helps in achieving data security and prevents unauthorized access.

• It allows for easy modification of implementation details without affecting the rest of the code.

• Examples include private variables and methods in a class.

• It is achieved through the use of access modifiers such as public, private, and protected.

Program to find substring in a string

• Use a loop to iterate through the main string

• Check if the substring matches the characters in the main string

• Return the index where the substring starts, or -1 if not found

My strengths include problem-solving skills, adaptability, and strong communication abilities.

• Strong problem-solving skills - I enjoy tackling complex issues and finding creative solutions.

• Adaptability - I am able to quickly learn new technologies and adapt to changing environments.

• Strong communication abilities - I can effectively communicate with team members and stakeholders to ensure project success.

Program to find the Least Common Multiple (LCM) of two numbers

• Create a function that takes two integers as input

• Find the Greatest Common Divisor (GCD) of the two numbers using Euclidean algorithm

• Multiply the two numbers and divide by their GCD to get LCM

• Example: For numbers 12 and 18, LCM = (12 * 18) / GCD(12, 18)

A constructor is a special type of method that is used to initialize objects in a class.

• Constructors have the same name as the class they belong to.

• They do not have a return type.

• They are called automatically when an object is created.

• Constructors can have parameters to initialize the object with specific values.