CN Solutions Interview Questions and Answers

Cut the cake horizontally with the first two slices, then stack the pieces and cut vertically with the third slice.

• Cut the cake horizontally with the first slice, creating two equal halves.

• Stack the two halves on top of each other and cut horizontally again with the second slice, creating four equal quarters.

• Finally, stack the four quarters and cut vertically with the third slice, creating eight equal parts.

Models are defined using classes or schemas in programming languages like Python or JavaScript, and connected to a specific database using ORM tools like SQLAlchemy or Mongoose.

• Define models using classes or schemas that represent the structure of data in the database

• Use ORM (Object-Relational Mapping) tools to connect models to the database

• Specify the database connection details in the configuration file of the application

• Use migrations to create or update database tables ba...read more

Oops stands for Object-Oriented Programming. The four pillars of Oops are Inheritance, Encapsulation, Abstraction, and Polymorphism.

• Inheritance allows a class to inherit properties and behavior from another class. For example, a 'Car' class can inherit from a 'Vehicle' class.

• Encapsulation refers to the bundling of data and methods that operate on the data into a single unit. For example, using private variables and public methods in a class.

• Abstraction involves hiding the com...read more

JSON is a lightweight data interchange format commonly used in web development to store and transmit data.

• JSON stands for JavaScript Object Notation

• It uses key-value pairs to store data

• Access elements in JSON using dot notation or bracket notation

• Example: accessing 'name' in JSON object - data.name

• Example: accessing 'age' in JSON array - data[0].age

Use a Set to remove duplicates from an array of strings.

• Create a Set from the array to automatically remove duplicates

• Convert the Set back to an array to get unique values