HSBC Group Interview Questions and Answers

Function to find and replace a line in an array of strings

• Loop through array to find line containing first input

• Replace line with second input

• Return updated array

Method overriding is a feature in object-oriented programming where a subclass provides its own implementation of a method that is already provided by its parent class.

• Method overriding is used to achieve runtime polymorphism.

• The method signature of the overridden method must be the same as the method in the parent class.

• The access level of the overriding method cannot be more restrictive than the overridden method.

• Example: public class Animal { public void makeSound() { Syst...read more

Abstraction allows for defining a common interface for related objects, while inheritance enables a class to inherit attributes and methods from another class.

• Abstraction involves hiding the implementation details and showing only the necessary features of an object. Inheritance allows a class to inherit properties and behaviors from another class.

• Abstraction helps in creating a blueprint of a class without providing the implementation details. Inheritance helps in reusing co...read more

To find the angle between hour and minute hand at a given time on a clock face.

• Calculate the angle made by hour hand with 12:00 on the clock face

• Calculate the angle made by minute hand with 12:00 on the clock face

• Find the absolute difference between the two angles

• If the angle is greater than 180 degrees, subtract it from 360 degrees for the acute angle

My expected CTC is in line with industry standards and commensurate with my experience and skills.

• My expected CTC is based on my experience and skills in the field of QA engineering.

• I have researched industry standards and have a realistic expectation for my salary.

• I am open to negotiation based on the specific job requirements and benefits package.

• I am looking for a fair and competitive salary that reflects my contributions to the company.

Comparable is an interface used for natural ordering while Comparator is an interface used for custom ordering.

• Comparable is implemented by the class whose objects need to be sorted

• Comparator is implemented separately and passed as an argument to sorting method

• Comparable uses compareTo() method for comparison while Comparator uses compare() method

• Comparable provides only one way of sorting while Comparator provides multiple ways of sorting

• Example: String class implements Comp...read more

OOPs is a programming paradigm based on the concept of objects that interact with each other.

• OOPs stands for Object-Oriented Programming.

• It focuses on creating objects that have properties and methods.

• Encapsulation, Inheritance, and Polymorphism are the three main pillars of OOPs.

• Encapsulation is the process of hiding the implementation details of an object from the outside world.

• Inheritance allows a class to inherit properties and methods from another class.

• Polymorphism allo...read more