KPIT Technologies Software Engineer Interview Questions and Answers

The four pillars of OOP are Encapsulation, Abstraction, Inheritance, and Polymorphism, essential for building robust software.

• Encapsulation: Bundling data and methods that operate on the data within a single unit (class). Example: A class 'Car' with attributes like 'speed' and methods like 'accelerate()'.

• Abstraction: Hiding complex implementation details and showing only the essential features. Example: A 'Payment...read more

Find indices of two numbers in an array that sum up to a given target.

• Use a hash map to store numbers and their indices for quick lookup.

• Iterate through the array, for each number, check if (target - number) exists in the map.

• If found, return the indices of the two numbers.

• Example: For array [2, 7, 11, 15] and target 9, return indices [0, 1].

The pillars of OOP are encapsulation, inheritance, polymorphism, and abstraction, forming the foundation of object-oriented programming.

• Encapsulation: Bundling data and methods that operate on the data within one unit (class). Example: A 'Car' class with properties like 'speed' and methods like 'accelerate()'.

• Inheritance: Mechanism to create a new class from an existing class, inheriting its properties and methods...read more

A singleton class is a class that can only have one instance created at a time.

• Singleton classes are often used for managing global resources or settings.

• They typically have a private constructor to prevent multiple instances from being created.

• Access to the single instance is usually provided through a static method.

• Example: Logger class in a software application.

A solver is a tool or algorithm used to find solutions to mathematical or logical problems.

• There are different types of solvers such as linear solvers, nonlinear solvers, integer solvers, constraint solvers, etc.

• Examples of solvers include the Simplex algorithm for linear programming, Newton's method for nonlinear equations, and backtracking algorithm for constraint satisfaction problems.

Model-Based Design (MBD) is a methodology used in software engineering to create models of systems before implementing them in code.

• MBD helps in visualizing and designing complex systems before coding.

• It allows for simulation and testing of the system behavior before implementation.

• MBD can improve communication between different teams working on a project.

• Examples include using tools like Simulink for modeling and...read more

SQL joins are used to combine rows from two or more tables based on a related column between them.

• Types of SQL joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN.

• INNER JOIN returns rows when there is at least one match in both tables.

• LEFT JOIN returns all rows from the left table and the matched rows from the right table.

• RIGHT JOIN returns all rows from the right table and the matched rows from the lef...read more

Yes, MATLAB is a high-level programming language used for numerical computation, data analysis, and visualization.

• MATLAB is widely used in engineering, science, and finance.

• It has built-in functions for matrix manipulation, signal processing, and image analysis.

• MATLAB also has a graphical user interface (GUI) for easy visualization of data.

• Examples of applications include simulation of dynamic systems, statistical...read more