Dell Software Engineer Interview Questions and Answers

Find the greatest common divisor (GCD) of two given numbers 'X' and 'Y'.

• Implement a function to calculate the GCD of two numbers using Euclidean algorithm

• Iteratively find the remainder of dividing the larger number by the smaller number until the remainder is 0

• The last non-zero remainder is the GCD of the two numbers

Abstraction is hiding the implementation details while Interface is a contract that defines the methods that a class must implement.

• Abstraction focuses on hiding the internal implementation details of a class, allowing the user to only see the necessary details.

• Interface defines a contract that specifies the methods a class must implement, without providing the implementation details.

• Abstraction can be achieved through abstract classes in programming languages like Java.

• Inter...read more

Inheritance is a mechanism in Java where a class acquires the properties and methods of another class.

• It allows for code reusability and promotes a hierarchical relationship between classes.

• The subclass inherits all the non-private members (fields, methods) of the superclass.

• The keyword 'extends' is used to create a subclass.

• Example: class Dog extends Animal {}

• The subclass can override the methods of the superclass to provide its own implementation.

Abstraction is implemented in software engineering by hiding unnecessary details and exposing only relevant information.

• Abstraction is achieved through the use of abstract classes and interfaces in object-oriented programming.

• It allows developers to focus on the essential aspects of a concept without getting bogged down in implementation details.

• For example, in a car simulation program, the Car class may have abstract methods like start() and stop() without specifying how the...read more

The purpose of work is to achieve personal and professional goals while contributing to the success of the organization.

• Work provides financial stability and security

• Work helps individuals develop skills and gain experience

• Work allows individuals to contribute to society and make a difference

• Work provides a sense of purpose and fulfillment

• Work helps individuals achieve personal and professional goals

• Examples: earning a promotion, completing a project, helping a customer

• Work c...read more

Polymorphism is the ability of a function or method to behave differently based on the object it is acting upon.

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

• There are two types of polymorphism: compile-time (method overloading) and runtime (method overriding).

• Example: Inheritance allows a child class to override a method from its parent class, exhibiting polymorphic behavior.

Find the second largest element in an array

• Sort the array in descending order and return the second element

• Iterate through the array and keep track of the largest and second largest elements

• Handle edge cases like duplicates and empty arrays

My weaknesses include overthinking and being too self-critical.

• Overthinking can lead to analysis paralysis and slow down decision-making.

• Being too self-critical can lead to low self-esteem and hinder progress.

• I am actively working on improving these weaknesses through mindfulness and self-reflection.