RS Systems Interview Questions and Answers

Print highest element in array of strings

• Convert array elements to integers

• Use built-in max() function

• Print the result

Actions and Action are terms used in automation testing. Actions are a collection of steps while Action is a single step.

• Actions are a set of steps that can be reused in multiple tests

• Action is a single step that performs a specific action

• Actions can be called multiple times in a test

• Action can only be called once in a test

• Actions can be parameterized

• Action cannot be parameterized

JOINS are used in SQL to combine data from two or more tables based on a related column.

• Inner JOIN returns only the matching rows from both tables

• Equi JOIN is a type of Inner JOIN where the join condition is based on equality between two columns

• Example: SELECT * FROM table1 INNER JOIN table2 ON table1.column = table2.column

Divide array in two halves and keep each half in ascending order without using new Array.

• Use Array.sort() method to sort the original array

• Use Array.slice() method to divide the array into two halves

• Use Array.reverse() method to reverse the second half of the array

Interfaces are contracts that define a set of methods and properties that a class must implement.

• Interfaces provide a way to achieve abstraction and polymorphism in object-oriented programming.

• They allow for loose coupling between classes and promote code reusability.

• Interfaces can be used to define common behavior across multiple classes.

• Example: IDisposable interface in C# ensures that an object can be properly dispo...read more

Inheritance is a mechanism in object-oriented programming where a class is based on another class.

• Inheritance allows a subclass to inherit properties and methods from a superclass.

• The subclass can also add its own properties and methods.

• Examples include a Car class inheriting from a Vehicle class, or a Dog class inheriting from an Animal class.

Polymorphism is the ability of an object to take on many forms. In C++, it is achieved through function overloading and virtual functions.

• Polymorphism allows objects of different classes to be treated as objects of a common base class.

• Function overloading enables multiple functions with the same name but different parameters.

• Virtual functions allow derived classes to override base class functions.