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Strings are sequences of characters used to represent text in programming languages.
Strings can be defined using single or double quotes. Example: 'Hello' or "World".
They are immutable in languages like Python, meaning their content cannot be changed after creation.
Common operations include concatenation (joining), slicing (extracting), and searching.
Example of concatenation: 'Hello' + ' ' + 'World' results in 'He...
C pointers are variables that store memory addresses, allowing for dynamic memory management and efficient data manipulation.
Pointers are declared using the '*' symbol. Example: int *ptr;
Pointers can point to any data type, including arrays. Example: int arr[]; int *p = arr;
Pointers enable dynamic memory allocation using functions like malloc(). Example: int *arr = (int*)malloc(5 * sizeof(int));
Pointers can be use...
To find the middle element of a linked list, use the slow and fast pointer technique.
Initialize two pointers, slow and fast, at the head of the linked list.
Move the slow pointer by one node and the fast pointer by two nodes until the fast pointer reaches the end of the list.
The node pointed to by the slow pointer at this point is the middle element of the linked list.
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 clien...
What people are saying about TCS
OOPs concepts are fundamental principles in object-oriented programming that help in organizing and managing code efficiently.
Encapsulation: Bundling data and methods that operate on the data into a single unit (class).
Inheritance: Allows a class to inherit properties and behavior from another class.
Polymorphism: Ability to present the same interface for different data types.
Abstraction: Hiding the complex impleme...
In five years, I see myself as a lead developer, mentoring others and driving innovative projects that enhance user experiences.
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 responsibil...
I am drawn to TCS for its innovation, global presence, and commitment to employee growth and development.
TCS is a leader in technology and innovation, providing opportunities to work on cutting-edge projects.
The company's global presence allows for diverse experiences and collaboration with international teams.
TCS emphasizes continuous learning and professional development, offering various training programs.
The s...
Singleton class ensures only one instance of a class is created and provides a global point of access to it.
Use a private constructor to prevent instantiation of the class from outside.
Create a static method to return the instance of the class, creating it if it doesn't exist.
Maintain a private static variable to hold the instance of the class.
Devops is a software development methodology that combines software development (Dev) with IT operations (Ops) to shorten the systems development life cycle.
Devops focuses on collaboration, automation, and integration between developers and IT operations teams.
It aims to improve the speed and quality of delivering software applications.
Devops practices include continuous integration, continuous delivery, and infra...
The question involves coding in Python.
Use Python syntax and libraries to solve the problem.
Break down the problem into smaller tasks and tackle them one by one.
Test your code thoroughly to ensure it works correctly.
Consider efficiency and readability of your code.
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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