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An array is a data structure that stores a fixed-size sequence of elements of the same type, allowing for efficient indexing.
Arrays can hold multiple values in a single variable, e.g., ['apple', 'banana', 'cherry'].
They are zero-indexed, meaning the first element is accessed with index 0.
Arrays have a fixed size, defined at the time of creation, e.g., int[] numbers = new int[5];
They allow for efficient data retrie...
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 using properties and methods of an existing class. Example: '...
Discussing projects and technologies that utilize basic data structures and algorithms (DSA) in software development.
Developed a task management application using arrays to store tasks and linked lists for task prioritization.
Implemented a sorting algorithm (like QuickSort) in a project to optimize data retrieval in a database application.
Created a simple game using stacks to manage game states and queues for play...
HashMap stores key-value pairs, while HashSet stores unique values without duplicates, both using hashing for performance.
Data Structure: HashMap is a map that stores key-value pairs, e.g., `HashMap<String, Integer> map = new HashMap<>();`.
Uniqueness: HashSet only stores unique values, e.g., `HashSet<String> set = new HashSet<>(); set.add("apple");`.
Null Values: HashMap allows one null key ...
What people are saying about TCS
JDK, JRE, and JVM are essential components of Java programming, each serving a unique purpose in the development and execution process.
JDK (Java Development Kit): A complete toolkit for Java developers that includes the JRE, compilers, and tools for developing Java applications.
JRE (Java Runtime Environment): Provides the libraries and components necessary to run Java applications, including the JVM but not the de...
An IoC container in Spring Boot manages object creation and dependency injection, promoting loose coupling and easier testing.
Dependency Injection: The IoC container automatically injects dependencies into classes, reducing the need for manual instantiation.
Inversion of Control: The control of object creation is inverted from the application code to the IoC container, enhancing modularity.
Bean Lifecycle Management...
Microservice architecture is a design approach where applications are built as a collection of loosely coupled services.
Decentralized Data Management: Each microservice can manage its own database, allowing for flexibility and scalability. For example, an e-commerce application might have separate databases for user accounts, product inventory, and orders.
Independent Deployment: Microservices can be deployed indep...
An array is a data structure that stores a fixed-size sequence of elements of the same type, allowing for efficient indexing.
Arrays have a fixed size, defined at the time of creation. Example: `int[] numbers = new int[5];`
Elements in an array are accessed using an index, starting from 0. Example: `numbers[0]` accesses the first element.
Arrays can hold primitive types or objects. Example: `String[] names = {"Alice"...
A string is a sequence of characters used to represent text in programming and data processing.
Strings can include letters, numbers, symbols, and whitespace. Example: 'Hello, World!'
In most programming languages, strings are immutable, meaning they cannot be changed after creation. Example: In Python, 's = 'abc'; s[0] = 'A' raises an error.
Strings can be concatenated using operators or functions. Example: 'Hello' ...
OOP is a programming paradigm based on objects, promoting code reusability and organization through encapsulation, inheritance, and polymorphism.
Encapsulation: Bundling data and methods that operate on the data within a single unit (class). Example: A 'Car' class with properties like 'speed' and methods like 'accelerate()'.
Inheritance: Mechanism where a new class derives properties and behaviors from an existing c...
I appeared for an interview in Jul 2025, where I was asked the following questions.
Python is a high-level, interpreted programming language known for its readability and versatility in various applications.
Easy to learn: Python's syntax is clear and intuitive, making it accessible for beginners. Example: print('Hello, World!')
Versatile: Used in web development, data analysis, artificial intelligence, scientific computing, and more.
Rich libraries: Python has a vast ecosystem of libraries like NumPy fo...
I appeared for an interview in Dec 2024.
Numerical aptitude test, logical reasoning test, and technical aptitude test.
Case study GD, topic based GD,Role_play GD
I am a software developer with 5 years of experience in Java, Python, and SQL.
5 years of experience in Java, Python, and SQL
Strong problem-solving skills
Experience working in Agile development environment
Familiarity with version control systems like Git
I found this role through a job posting on LinkedIn.
Saw job posting on LinkedIn
Applied through company website
Referred by a friend who works at the company
My long term career goal is to become a senior software architect and lead a team of developers to create innovative solutions.
Work towards gaining expertise in various programming languages and technologies
Take on leadership roles in projects to develop management and communication skills
Attend industry conferences and workshops to stay updated on latest trends and advancements
Seek opportunities for mentorship and pro...
Your company is a leading software development firm specializing in creating innovative solutions for various industries.
Your company has a strong reputation for delivering high-quality software products.
You have a diverse portfolio of clients from different industries.
Your company values innovation and creativity in software development.
Your team is known for its expertise in cutting-edge technologies like AI and bloc...
My favorite programming language is Python because of its simplicity, readability, and versatility.
Python is known for its clean and readable syntax, making it easy to learn and understand.
Python has a large standard library with built-in modules for various tasks, reducing the need for external libraries.
Python is versatile and can be used for web development, data analysis, artificial intelligence, and more.
Object oriented programming is a programming paradigm based on the concept of objects, which can contain data in the form of fields and code in the form of procedures.
Objects are instances of classes, which define the structure and behavior of the objects.
Encapsulation is the concept of bundling data and methods that operate on the data within a single unit, such as a class.
Inheritance allows classes to inherit attribu...
I appeared for an interview in Sep 2024.
An aptitude test evaluates an individual's potential to excel in a specific area by assessing their strengths and weaknesses in particular abilities.
An assessment that measures an individual's inherent abilities and potential for success in a specific activity.
A coding test is a programming assessment designed to evaluate a candidate's coding skills. It is a standard component of the technical hiring process for software developers and programmers.
Assessment that evaluates a candidate's coding skills
Group discussion (GD) topics for interviews may cover areas such as business, social issues, and current affairs. GDs serve to evaluate a candidate's communication, leadership, and teamwork abilities.
Discussion assignments are prompts that your teacher may assign to you. By participating in these discussions, you can reflect on your learning, share ideas and opinions, or ask and answer questions. Discussions may require you to respond to individual questions or provide multiple responses to an ongoing conversation.
I appeared for an interview in May 2025, where I was asked the following questions.
20 min for 1 round of interview
Multithreading allows multiple threads to run concurrently, improving performance and responsiveness.
Multithreading is used to execute multiple tasks simultaneously within a single process.
It can improve performance by utilizing multiple CPU cores efficiently.
Common multithreading libraries include Java's Thread class and C#'s Task Parallel Library.
Example: In a web server, multithreading can handle multiple client req...
Reverse the number in the array
I applied via Walk-in and was interviewed in Nov 2024. There were 3 interview rounds.
Reverse string ,array sorting
I appeared for an interview in Jun 2025, where I was asked the following questions.
PCA, or Principal Component Analysis, is a dimensionality reduction technique used to simplify datasets while preserving variance.
PCA transforms data into a new coordinate system, where the greatest variance lies on the first axis.
It helps in reducing the number of features while retaining the essential information, making it easier to visualize data.
For example, in image processing, PCA can reduce the number of pixels...
I appeared for an interview in Jun 2025, where I was asked the following questions.
In five years, I see myself as a lead developer, mentoring others and driving innovative projects that impact the industry.
I aim to lead a team of developers, guiding them through complex projects and fostering a collaborative environment.
I plan to deepen my expertise in emerging technologies, such as AI and machine learning, to contribute to cutting-edge solutions.
I envision myself taking on more responsibilities, pos...
I excel in problem-solving and teamwork, but I sometimes struggle with time management under tight deadlines.
Strength: Strong problem-solving skills - I enjoy tackling complex coding challenges, like optimizing algorithms for better performance.
Strength: Effective teamwork - I thrive in collaborative environments, having successfully led a project with cross-functional teams.
Weakness: Time management - I occasionally u...
Some of the top questions asked at the TCS Software Developer interview -
The duration of TCS Software Developer interview process can vary, but typically it takes about less than 2 weeks to complete.
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