Hopscotch Backend Developer Interview Questions and Answers

OOPS concepts are fundamental principles in object-oriented programming that help in organizing and designing code efficiently.

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

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

• Polymorphism: Ability to present the same interface for different data types.

• Abstraction: Hiding the complex impleme...read more

The Fibonacci series is a sequence of numbers where each number is the sum of the two preceding ones.

• Initialize an array to store the Fibonacci series

• Start with the first two numbers (0 and 1) in the series

• Use a loop to calculate the next number by adding the previous two numbers

• Continue this process until reaching the desired length of the series

Pattern program of star involves printing a specific pattern using asterisks.

• Use nested loops to control the number of rows and columns

• Increment the number of stars in each row based on the row number

• Example: for a pattern like below, use nested loops to print the stars in each row: * ** ***