TCS Interview Questions, Process, and Tips

DSA RELATED QUESTIONS from leetcode medium to hard level problem

Q1. Computer fundamental and new technology questions
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Q2. Some standard DSA questions
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Numerical,logical and general

Simple coding question.

Q1. Tell me about yourself
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Q2. And basic question in C since I was from mechanical background
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Q1. Just tell me about yourself and document verification.
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It consists of questions we need to get cutoff

3 coding questions atleast one need to be answered perfectly

Q1. Asked about technicals , Java language and python questions it went about 1 hour
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Q2. What is Java and how itis best language and what are the benefits of the language
Ans. 
Java is a high-level programming language known for its portability, security, and versatility.
• Java is platform-independent, meaning it can run on any device with a Java Virtual Machine (JVM).

• It is known for its strong security features, such as automatic memory management and built-in exception handling.

• Java is versatile, with a wide range of applications including web development, mobile apps, and enterprise software...read more
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Q3. Explain about inheritance?
Ans. 
Inheritance is a concept in object-oriented programming where a class can inherit attributes and methods from another class.
• Allows a class to inherit attributes and methods from another class

• Promotes code reusability and reduces redundancy

• Creates a parent-child relationship between classes

• Derived class can access all public and protected members of the base class

• Example: Class 'Car' can inherit from class 'Vehicle'
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Q4. Explain about method overloading?
Ans. 
Method overloading is when multiple methods in a class have the same name but different parameters.
• Allows a class to have multiple methods with the same name but different parameters

• Parameters can differ in number, type, or order

• Compile-time polymorphism

• Example: void print(int a), void print(int a, int b)
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I applied through NQT. Apti Test+2 coding qs.

Q1. Basic question regarding project, college exp, Java 8 feature, set vs map, OOPS!
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Q2. Explain Java 8 Feature
Ans. 
Java 8 introduced several new features including lambda expressions, functional interfaces, streams, and default methods.
• Lambda expressions allow you to pass functionality as an argument to a method.

• Functional interfaces have a single abstract method and can be used with lambda expressions.

• Streams provide a way to work with sequences of elements efficiently.

• Default methods allow interfaces to have method implementation...read more
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Q3. Explain diff -- Set vs Map

Ans. 

Set and Map are both data structures in Java, but Set stores unique elements while Map stores key-value pairs.

• Set does not allow duplicate elements, while Map allows duplicate values but not duplicate keys.

• In Set, elements are stored in an unordered manner, while in Map, key-value pairs are stored.

• Example: Set set = new HashSet<>(); Map map = new HashMap<>();

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