100+ Hetero Interview Questions and Answers

Car A's speed is 90kmph

• Use the formula: Speed = Distance/Time

• Assume the distance to be the same for both cars

• Calculate Car A's time using the given information

• Substitute the values in the formula to get Car A's speed

Find sum of numbers in range 1 to m (both inclusive) not divisible by n. Return difference between sum of non-divisible and divisible numbers.

• Iterate through range 1 to m and check if number is divisible by n.

• If not divisible, add to sum of non-divisible numbers.

• If divisible, add to sum of divisible numbers.

• Return difference between sum of non-divisible and divisible numbers.

Code to find length of string without using strlen() function.

• Use a loop to iterate through each character of the string

• Increment a counter variable for each character in the string

• Stop the loop when the null character '\0' is encountered

• Return the counter variable as the length of the string

I have learned Python, JavaScript, and SQL outside of my engineering curriculum.

• I learned Python through online courses and used it for data analysis projects.

• I learned JavaScript through building web applications and creating interactive user interfaces.

• I learned SQL through database management and querying data.

I have learned programming languages on multiple platforms.

• I learned Java and Python on Windows platform using Eclipse and PyCharm IDEs respectively.

• I learned C++ on Linux platform using g++ compiler.

• I learned JavaScript on both Windows and Mac platforms using Visual Studio Code and Sublime Text editors respectively.

• I also learned Swift on Mac platform using Xcode IDE.

No, banning western serials on Indian channels is not necessary.

• Western serials are popular among Indian audiences.

• Banning them would limit the entertainment options for viewers.

• It is up to individuals to decide what they want to watch.

• Censorship should be limited to content that is harmful or offensive.

• Banning western serials could also harm the business of Indian channels.

• Instead, channels can choose to air a mix of western and Indian content.

I would change my decision to not pursue a computer science degree earlier in my education.

• I would have started learning programming languages sooner.

• I would have taken more computer science courses in college.

• I would have sought out internships in software development earlier in my career.

The longest factorial that can be printed depends on the data type used to store the result.

• Factorials grow very quickly, so the data type used to store the result is important.

• For example, the largest factorial that can be stored in a 32-bit integer is 12!.

• Using a 64-bit integer allows for larger factorials, such as 20!.

• Using a floating-point data type allows for even larger factorials, but with reduced precision.

• Printing the entire factorial may not be practical, so scienti...read more

My favorite coding language is Python because of its simplicity and versatility.

• Python has a clean and easy-to-read syntax, making it beginner-friendly.

• It has a vast library of modules and frameworks for various applications.

• Python is used in various fields such as web development, data science, and artificial intelligence.

• It supports multiple programming paradigms such as object-oriented, functional, and procedural programming.

• Python has a large and active community, providi...read more

Code for Octal to Decimal Conversion

• Start from the rightmost digit and move towards the leftmost digit

• Multiply each digit with 8 raised to the power of its position

• Add all the products obtained in the previous step to get the decimal equivalent

OOPS provides modularity, reusability, and extensibility in software development.

• Encapsulation ensures data security and prevents unauthorized access.

• Inheritance allows for code reuse and reduces redundancy.

• Polymorphism enables flexibility and allows for dynamic behavior.

• Abstraction simplifies complex systems and hides implementation details.

• OOPS promotes better organization and maintenance of code.

• Examples: Java, C++, Python, Ruby, etc.

Exceptional Handling is a mechanism to handle runtime errors in Java programs.

• It is done using try-catch blocks.

• It prevents the program from crashing due to errors.

• It helps in debugging and maintaining the code.

• Examples include NullPointerException, ArrayIndexOutOfBoundsException, etc.

Artificial Intelligence and Machine Learning are trending technologies.

• AI and ML are being used in various industries like healthcare, finance, and retail.

• AI-powered chatbots are becoming popular for customer service.

• ML algorithms are being used for fraud detection and risk management.

• Deep learning is being used for image and speech recognition.

• Natural Language Processing (NLP) is being used for sentiment analysis and language translation.

• Reinforcement learning is being used ...read more

Friend function is a non-member function that has access to private and protected members of a class.

• Declared inside the class but defined outside the class scope

• Can access private and protected members of the class

• Not a member of the class but has access to its private and protected members

• Used to provide access to private or protected members to non-member functions or other classes

• Example: friend void display(A);

• Example: class A { friend void display(A); };

I recently learned about React Native, a framework for building mobile apps using JavaScript.

• React Native allows for cross-platform development, reducing the need for separate codebases for iOS and Android.

• It uses a similar syntax to React, making it easy for web developers to transition to mobile development.

• Some popular apps built with React Native include Facebook, Instagram, and Airbnb.

As a team lead, I would facilitate open communication, encourage collaboration, and work towards finding a common ground.

• Encourage open communication between team members to understand each other's perspectives

• Facilitate a discussion to address differences and find common ground

• Encourage collaboration and compromise to reach a consensus

• Seek input from other team members or stakeholders to gain different perspectives

• Provide guidance and support to help team members work throug...read more

Generative AI has great potential in various industries, including art, music, and content creation.

• Generative AI can be used to create realistic images, videos, and music compositions.

• It has the potential to revolutionize content creation by automating the process and generating unique outputs.

• Applications of generative AI include deepfakes, style transfer, and text generation.

• While generative AI has great potential, ethical considerations and misuse must be carefully monito...read more

To learn a new programming language, I would start with understanding its syntax and basic concepts, practice coding, and seek help from online resources and experienced programmers.

• Research and understand the syntax and basic concepts of the language

• Practice coding in the language by working on small projects

• Seek help from online resources such as documentation, forums, and tutorials

• Collaborate with experienced programmers who are proficient in the language

• Attend workshops o...read more

pandas is a Python library for data manipulation and analysis. Numpy is a library for numerical operations. List and set are data structures in Python.

• pandas is used for data manipulation, analysis, and cleaning tasks.

• Numpy provides support for large, multi-dimensional arrays and matrices.

• Lists are ordered collections of items, while sets are unordered collections of unique items.

• Lists are mutable, while sets are immutable.

• Lists allow duplicate elements, while sets do not.

• Lis...read more

CLI library was used for user interaction and ease of use.

• CLI library provided a simple and intuitive way for users to interact with the project.

• It allowed for easy input and output handling.

• Examples include argparse in Python and Commander.js in Node.js.

• It also made it easier to automate tasks through scripts.

• Overall, it improved the user experience and made the project more accessible.

The question is asking for small jumbled words to be arranged into meaningful sentences.

• Read each word carefully and try to identify any patterns or connections between them.

• Look for common parts of speech such as nouns, verbs, and adjectives.

• Try rearranging the words in different orders to see if any make sense.

• Use context clues to help determine the meaning of each word.

• Practice with similar exercises to improve your skills.

Multithreading is the ability of a CPU to execute multiple threads concurrently.

• Multithreading allows for better utilization of CPU resources.

• It can improve application performance by allowing multiple tasks to run simultaneously.

• Multithreading can be implemented in various programming languages such as Java, C++, and Python.

• Examples of multithreaded applications include web servers, video games, and media players.

Different types of collection and reasons for concurrent modification exception.

• Types of collections: List, Set, Map, Queue, Stack

• Concurrent modification exception occurs when a collection is modified while iterating over it

• Solution: use Iterator or synchronized collection

Polymorphism is the ability of an object to take on many forms. It allows objects of different classes to be treated as if they were of the same class.

• Polymorphism is achieved through method overriding and method overloading.

• Real-time examples include function overloading, operator overloading, and inheritance.

• In function overloading, multiple functions can have the same name but different parameters.

• In operator overloading, operators like +, -, * can be overloaded to work wi...read more

Cloud computing enables efficient storage, processing, and access to data, benefiting countries through cost savings, scalability, and innovation.

• Cost savings: Cloud services eliminate the need for expensive hardware and maintenance costs.

• Scalability: Cloud resources can be easily scaled up or down based on demand, allowing countries to efficiently manage their IT infrastructure.

• Innovation: Cloud platforms provide access to cutting-edge technologies and tools, fostering innov...read more

OOP stands for Object-Oriented Programming. The four major OOP concepts are encapsulation, inheritance, polymorphism, and abstraction.

• Encapsulation: bundling of data and methods that manipulate the data within a single unit

• Inheritance: creating new classes from existing ones, inheriting their properties and methods

• Polymorphism: ability of objects to take on multiple forms or behaviors

• Abstraction: hiding the implementation details of a class and exposing only the necessary inf...read more

Polymorphism is the ability of an object to take on many forms. Abstraction is the process of hiding implementation details.

• Polymorphism allows objects of different classes to be treated as if they are of the same class.

• Abstraction allows us to focus on the essential features of an object rather than its implementation details.

• Polymorphism is achieved through method overriding and method overloading.

• Abstraction is achieved through abstract classes and interfaces.

• Example of po...read more

Recalling small stories and rephrasing them

• Practice active listening to remember stories accurately

• Use your own words to rephrase the story

• Try to capture the main idea and important details

• Use visualization techniques to help remember the story

• Practice recalling stories with friends or family

The qualities of a tea lead include strong communication skills, leadership abilities, technical expertise, and the ability to collaborate effectively with team members.

• Strong communication skills to effectively convey ideas and instructions to team members

• Leadership abilities to guide and motivate team members towards common goals

• Technical expertise to provide guidance and support on software development tasks

• Ability to collaborate effectively with team members to ensure pro...read more

The project involves developing a web-based application for managing inventory and sales.

• The application will be built using Java and Spring framework.

• It will have a user-friendly interface for adding, updating and deleting products.

• The application will also generate reports on sales and inventory levels.

• The database used will be MySQL.

• The project will follow Agile methodology for development.

Inheritance is a concept in object-oriented programming where a class inherits properties and behaviors from another class.

• Inheritance allows code reuse and promotes code organization.

• There are different types of inheritance: single, multiple, multilevel, and hierarchical.

• Single inheritance involves a class inheriting from a single base class.

• Multiple inheritance involves a class inheriting from multiple base classes.

• Multilevel inheritance involves a class inheriting from a d...read more

OOPS stands for Object-Oriented Programming System. It is a programming paradigm based on the concept of objects.

• OOPS is based on four main concepts: Encapsulation, Inheritance, Polymorphism, and Abstraction.

• 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 allows objects of different classes to be treated as if they were of the same...read more

AI stands for Artificial Intelligence, which involves creating intelligent machines that can simulate human behavior and thinking.

• AI is implemented in projects through machine learning algorithms like neural networks, decision trees, and support vector machines.

• Natural language processing and computer vision are common AI techniques used in projects.

• AI can be used in recommendation systems, chatbots, autonomous vehicles, and more.

• Example: Implementing a chatbot using natural ...read more

My favorite programming language is Python.

• Python is a versatile and easy-to-learn language.

• It has a simple and readable syntax, making it great for beginners.

• Python has a large and active community, providing extensive libraries and frameworks.

• It is widely used in various domains like web development, data analysis, and machine learning.

• Python's extensive documentation and support make it a developer-friendly language.

Yes, the Indian government does use cloud technologies for various services and initiatives.

• The Indian government has adopted cloud technologies for various e-governance initiatives to improve efficiency and accessibility.

• Cloud services are used for data storage, processing, and analysis in government departments.

• Examples include the National Informatics Centre (NIC) cloud services used by various government agencies and departments.

• Cloud technologies are also utilized for ho...read more

AWS is a cloud computing platform. SaaS is a software delivery model where software is hosted on the cloud and accessed via the internet.

• AWS is a cloud computing platform that provides a wide range of services such as computing, storage, and databases.

• SaaS stands for Software as a Service and is a software delivery model where software is hosted on the cloud and accessed via the internet.

• Examples of SaaS include Salesforce, Dropbox, and Google Apps.

• Using SaaS eliminates the n...read more

I would carefully evaluate the opportunity and consider if it aligns with my career goals and interests.

• Assess the potential benefits and drawbacks of the opportunity

• Consider how it fits into your long-term career plans

• Seek advice from mentors or colleagues

• Make an informed decision based on your evaluation

Jail project management refers to managing projects within a constrained environment, often with limited resources and strict regulations.

• Involves managing projects in a restricted environment, such as a correctional facility

• Requires careful planning and coordination due to limited resources and strict regulations

• Challenges include security concerns, communication barriers, and restricted access to technology

• Examples include implementing educational programs for inmates, upgr...read more

I switched from Mechanical to Software because I discovered my passion for coding and problem-solving.

• Discovered passion for coding and problem-solving

• Enjoyed programming courses and projects

• Realized software development offered more opportunities for growth and innovation

Cloud computing is a technology that allows users to access and store data and applications over the internet.

• Cloud computing eliminates the need for physical servers and hardware.

• It offers scalability and flexibility to businesses.

• Examples include Amazon Web Services, Microsoft Azure, and Google Cloud Platform.

Repeating sentences after an audio command

• This is a common feature in voice assistants like Siri or Alexa

• The device listens for a trigger word or phrase, then repeats the command back to the user

• This can be useful for confirming that the device understood the command correctly

Inheritance is a mechanism in object-oriented programming where a class inherits properties and behaviors from another class.

• Inheritance allows for code reuse and promotes modularity.

• The class that inherits properties and behaviors is called the derived class or subclass.

• The class from which properties and behaviors are inherited is called the base class or superclass.

• Inheritance can be single, multiple, or multilevel depending on the number of classes involved.

• Example: A 'Ca...read more

Sorting in data structures is the process of arranging data in a particular order, usually in ascending or descending order.

• Sorting helps in organizing data for efficient searching and retrieval.

• Common sorting algorithms include Bubble Sort, Selection Sort, Insertion Sort, Merge Sort, Quick Sort, etc.

• Example: Sorting an array of numbers in ascending order - [5, 2, 8, 1, 3] becomes [1, 2, 3, 5, 8].

Exception handling in Java allows for graceful handling of errors and exceptions in code.

• Use try-catch blocks to handle exceptions in Java.

• Catch specific exceptions to handle them differently.

• Use finally block to execute code regardless of whether an exception is thrown.

• Throw custom exceptions using throw keyword.

• Use throws keyword in method signature to declare exceptions that can be thrown by the method.

Primary key uniquely identifies each record in a table, while foreign key establishes a link between two tables. Normalization is the process of organizing data in a database to reduce redundancy. Abstraction is hiding the implementation details, and polymorphism allows objects to be treated as instances of their parent class.

• Primary key uniquely identifies each record in a table

• Foreign key establishes a link between two tables

• Normalization reduces redundancy in database desi...read more

Polymorphism is the ability of a function or method to behave differently based on the object it is acting upon. Encapsulation is the bundling of data and methods that operate on the data into a single unit.

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

• Encapsulation helps in hiding the internal state of an object and restricting access to it.

• Example of polymorphism: Overloading a method with different parameters in a class.

• Ex...read more

Machine learning is a subset of artificial intelligence that involves the development of algorithms and statistical models to perform specific tasks without explicit instructions.

• Types of machine learning include supervised learning, unsupervised learning, and reinforcement learning.

• Supervised learning involves training a model on labeled data to make predictions.

• Unsupervised learning involves finding patterns in unlabeled data.

• Reinforcement learning involves training a model...read more

OOPs stands for Object-Oriented Programming. It is a programming paradigm based on the concept of objects.

• OOPs focuses on creating objects that contain data and methods to manipulate that data.

• It allows for encapsulation, inheritance, and polymorphism.

• Examples of OOP languages include Java, C++, and Python.

A break function is a statement used to exit a loop or switch statement.

• It is used to terminate a loop or switch statement before its natural end.

• It can be used with conditions to exit a loop when a certain condition is met.

• Examples include 'break' in Java and C++ and 'exit' in Python.

Beans in Spring have three scopes: Singleton, Prototype, and Request.

• Singleton scope creates only one instance of the bean and is the default scope.

• Prototype scope creates a new instance of the bean every time it is requested.

• Request scope creates a new instance of the bean for every HTTP request.

• Other scopes include Session, Global Session, and WebSocket.

• Scopes can be defined using the @Scope annotation.

AI stands for Artificial Intelligence, which involves the development of machines that can perform tasks that typically require human intelligence.

• AI involves the use of algorithms and data to enable machines to learn from experience.

• Machine learning is a subset of AI that focuses on the development of algorithms that allow machines to learn from and make predictions or decisions based on data.

• Deep learning is a subset of machine learning that uses neural networks with many l...read more

APIs are sets of rules and protocols that allow different software applications to communicate with each other.

• APIs stand for Application Programming Interfaces.

• They define the methods and data formats that applications can use to request and exchange information.

• APIs can be used to access services or data from external sources, such as social media platforms or payment gateways.

• Examples of APIs include the Google Maps API, Twitter API, and PayPal API.

Both Java and Python have their own strengths and weaknesses, and the choice depends on the specific requirements of the project.

• Java is a statically-typed language known for its performance and scalability.

• Python is a dynamically-typed language known for its simplicity and readability.

• Java is commonly used for building large-scale enterprise applications.

• Python is popular for web development, data analysis, and scripting tasks.

• Java has a strong ecosystem and extensive librar...read more

OOPs (Object-Oriented Programming) is a programming paradigm that organizes code into objects with properties and behaviors.

• OOPs focuses on creating reusable code by encapsulating data and methods within objects.

• It emphasizes the concepts of inheritance, polymorphism, and encapsulation.

• Objects are instances of classes, which define their structure and behavior.

• Inheritance allows classes to inherit properties and methods from other classes.

• Polymorphism enables objects to take ...read more

No plans for higher studies at the moment, focusing on gaining practical experience.

• Currently focusing on gaining practical experience in the field

• Considering pursuing higher studies in the future for career advancement

• No immediate plans for higher studies due to financial constraints

• Prefer gaining industry experience before considering higher studies

Swapping two variables without a third variable can be achieved using arithmetic operations or bitwise XOR operation.

• Using arithmetic operations: a = a + b; b = a - b; a = a - b;

• Using bitwise XOR operation: a = a ^ b; b = a ^ b; a = a ^ b;

If the server crashes, the website or application will become unavailable until the server is restored.

• Website or application will be inaccessible to users

• Data may be lost if not properly backed up

• Potential impact on business operations and revenue

• Need to investigate the cause of the crash and implement measures to prevent future occurrences

Yes, I am proficient in Java, Python, and C++.

• Proficient in Java for backend development

• Experienced in Python for data analysis and scripting

• Familiar with C++ for system programming

I am proficient in Java, Python, C++, and JavaScript.

• Java

• Python

• C++

• JavaScript

OOPs stands for Object-Oriented Programming. It is a programming paradigm based on the concept of objects.

• OOPs is based on the four main concepts: Encapsulation, Inheritance, Polymorphism, and Abstraction.

• Encapsulation is the process of hiding the implementation details from the user.

• Inheritance is the process of inheriting the properties of one class by another class.

• Polymorphism is the ability of an object to take on many forms.

• Abstraction is the process of hiding the unnec...read more

To create a string using loop

• Declare an empty string variable

• Use a loop to concatenate desired strings to the variable

• Use the loop condition to control the number of iterations

A stack is a linear data structure that follows the Last In First Out (LIFO) principle.

• Elements are added and removed from the top of the stack.

• Common operations include push (add element) and pop (remove element).

• Example: Undo functionality in text editors uses a stack to store previous states.

A basic code in C++

• Use the 'int main()' function as the entry point of the program

• Declare an array of strings using the syntax 'string arrayName[size]'

• Initialize the array with values

• Access and manipulate the elements of the array using indexing

Find unique elements in an array of strings

• Create a hashmap to store the frequency of each element in the array

• Iterate through the array and update the frequency in the hashmap

• Iterate through the hashmap and return elements with frequency 1

C is a procedural programming language while C++ is an object-oriented programming language.

• C is a procedural programming language, focusing on functions and procedures.

• C++ is an object-oriented programming language, allowing for classes, objects, and inheritance.

• C++ is an extension of C, adding features like classes, templates, and exception handling.

• C++ supports both procedural and object-oriented programming paradigms.

• C++ is often used for developing complex applications a...read more

DBMS is like a big box where we keep all our information organized so we can find it easily.

• DBMS stands for Database Management System

• It helps us store and organize information in a structured way

• We can easily search, add, delete or modify information in DBMS

• Examples of DBMS are MySQL, Oracle, SQL Server

I enjoy the problem-solving aspect of software engineering and the satisfaction of creating functional and efficient solutions.

• I like the challenge of solving complex problems through coding

• I enjoy the creativity involved in designing and implementing software solutions

• I appreciate the continuous learning and growth opportunities in the field

• I find satisfaction in seeing my code come to life and make a positive impact

I would interact with clients by actively listening to their needs, providing clear communication, and offering solutions to their problems.

• Actively listen to the client's needs and concerns

• Provide clear and concise communication about project progress and updates

• Offer solutions to any problems or challenges the client may be facing

• Maintain a professional and friendly demeanor at all times

• Follow up with the client to ensure their satisfaction with the project

A vacuum is a device that uses suction to remove dirt and debris from surfaces.

• Vacuums work by creating a partial vacuum to generate suction.

• They are commonly used for cleaning floors, carpets, and upholstery.

• There are different types of vacuums, such as upright, canister, and robotic vacuums.

• Some vacuums also have additional features like HEPA filters for allergen removal.

• Examples of popular vacuum brands include Dyson, Shark, and Hoover.

The candidate is asked to listen to a story and then repeat it.

• Listen carefully to the story being told

• Pay attention to key details and events in the story

• Repeat the story in your own words, focusing on accuracy and clarity

Identify and correct errors in a given sentence.

• Read the sentence carefully to identify any grammatical or spelling errors.

• Check for subject-verb agreement, punctuation, and word usage.

• Consider the context of the sentence to determine the intended meaning.

• Consult a grammar guide or dictionary for assistance if needed.

OOPs pillars are the four main principles of Object-Oriented Programming: Inheritance, Encapsulation, Abstraction, and Polymorphism.

• Inheritance: A child inherits properties and behaviors from its parent. Example: A car is a type of vehicle and inherits properties like color and behaviors like driving from the Vehicle class.

• Encapsulation: Bundling data and methods that operate on the data into a single unit. Example: A capsule is a container that encapsulates medicine.

• Abstract...read more

C is a procedural programming language while Java is an object-oriented programming language.

• C is a low-level language while Java is a high-level language.

• C requires manual memory management while Java has automatic memory management.

• C supports pointers while Java does not.

• C is platform-dependent while Java is platform-independent.

• C has a simpler syntax compared to Java.

Cloud computing is the delivery of computing services over the internet. SaaS is software accessed via the internet, IaaS is infrastructure provided over the internet.

• Cloud computing involves delivering computing services over the internet

• SaaS (Software as a Service) is software accessed via the internet on a subscription basis

• IaaS (Infrastructure as a Service) is providing virtualized computing resources over the internet

• Examples: SaaS - Google Workspace, IaaS - Amazon Web S...read more

IT has played a crucial role in managing the impact of COVID-19 through remote work, telemedicine, contact tracing apps, and data analysis.

• Facilitated remote work and online learning through video conferencing tools like Zoom and Microsoft Teams

• Enabled telemedicine services for patients to consult with healthcare providers remotely

• Developed contact tracing apps to track and contain the spread of the virus

• Utilized data analysis and AI to predict outbreaks and optimize healthca...read more

Favorite subject is Computer Science, least favorite is History.

• Favorite subject: Computer Science - enjoy coding and problem-solving

• Least favorite subject: History - not interested in memorizing dates and events

I am aware of various programming languages, databases, frameworks, and tools used in software development.

• Programming languages: Java, Python, C++, JavaScript

• Databases: MySQL, MongoDB, PostgreSQL

• Frameworks: Spring Boot, React, Angular

• Tools: Git, Jenkins, Docker

Exception propagation is the process of passing an exception from one method to another in the call stack.

• When an exception is thrown in a method, it can be caught and handled in the same method or propagated to the calling method.

• Propagation continues until the exception is caught or the top-level method is reached.

• Propagation can be done implicitly or explicitly using the 'throw' keyword.

• Example: If a method calls another method that throws an exception, the calling method ...read more

Developing a real-time application to track COVID-19 cases and provide updates

• Utilize APIs to fetch real-time data on COVID-19 cases

• Implement data visualization to display statistics in a user-friendly manner

• Incorporate push notifications to alert users about new updates

• Include a feature for users to report their own symptoms or test results