TCS Software Developer Trainee Interview Questions, Process, and Tips for Freshers

Q1. What is a Java thread stream?
Ans. 
A Java thread stream is a sequence of data that can be read from or written to concurrently by multiple threads.
• Java thread streams allow for efficient communication between threads.

• They can be used to pass data between different parts of a program running in parallel.

• Examples of Java thread streams include InputStream and OutputStream for reading and writing data respectively.
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Q1. What are your strengths?
Ans. 
My strengths include problem-solving skills, attention to detail, and strong programming abilities.
• Strong problem-solving skills - I enjoy tackling complex issues and finding creative solutions.

• Attention to detail - I am meticulous in my work to ensure high-quality results.

• Strong programming abilities - I have expertise in multiple programming languages such as Java, Python, and C++.
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Easy to Medium difficulty with Aptitude Questions

Q1. Merge Sort was asked
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Q2. Merge sort in a linked list was asked as follow up
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Q1. Questions on DBMS and core Java were asked (Easy only)
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Q1. Basic HR questions were asked
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Q1. Fibbonacci coding
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Q2. Pattern divide and conquer
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Q1. Question were about your machine learning projects
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1 hr test with mcq and coding snippet

Q1. What are pointers in c?
Ans. 
Pointers are variables that store memory addresses of other variables in C programming language.
• Pointers are used to manipulate data structures like arrays, linked lists, and trees.

• They can be used to pass values by reference to functions.

• Pointers can also be used to allocate memory dynamically using functions like malloc() and calloc().
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Q2. Write a linked list program.
Ans. 
A linked list program is a data structure that stores a sequence of elements with pointers to the next element.
• Create a Node class with a value and a next pointer

• Create a LinkedList class with a head pointer and methods to add, remove, and traverse nodes

• Example: LinkedList ll = new LinkedList(); ll.add(5); ll.add(10); ll.remove(5);
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Q3. Applications of data structures
Ans. 
Data structures are used to organize and manipulate data efficiently in various applications.
• Data structures are used in databases to store and retrieve data quickly.

• In computer graphics, data structures are used to represent geometric objects.

• Data structures are used in algorithms such as sorting and searching.

• In networking, data structures are used to represent network packets and routing tables.

• Data structures are u...read more
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Q4. Algorithm for merge sort
Ans. 
Merge sort is a divide and conquer algorithm that recursively divides the input array into two halves, sorts them and then merges them.
• Divide the array into two halves

• Recursively sort the two halves

• Merge the sorted halves

• Repeat until the entire array is sorted
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Q5. Cloud computing application in real world in project
Ans. 
Cloud computing is widely used in various industries for data storage, processing, and analysis.
• Cloud computing allows for easy scalability and cost-effectiveness in managing large amounts of data.

• Real-time collaboration and access to data from anywhere are some of the benefits of cloud computing.

• Examples of cloud computing applications in real-world projects include Amazon Web Services (AWS), Microsoft Azure, and Goog...read more
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Q6. Java and nodejs questions
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In aptitude test around 70 questions,it's easy to solve

Q1. In HR round,he asked basic HR questions only
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Advance C, Java script ,Python, Html, Excel knowledge

Give me topic and i will discussed you that topic about regarding all things

Round duration - 120 minutes
Round difficulty - Medium

For me assesment was on 4.30 in the evening. the round was about 120 minute long. It had 3 coding question easy,medium and high level. And it contained some aptitude question on profit and loss, SI,CI etc. which will be easy to solve. It also contained logical question like seating arrangement, directions. And vocabulary round was also there. To solve a coding round you need to have a basic understanding. For me the easy question was to find out the prime number in array and medium level question was on profit maximization and another one was jumping cloud problem. There will be 6 coding question in which we need to solve 3.(one from easy, medium and hard). I solved 2 coding question. and the aptitude part was easy most like other companies. you can solve that very easily.

Q1. Find prime numbers
You are given a positive integer ‘N’. Your task is to print all prime numbers less than or equal to N.
Note: A prime number is a natural number that is divisible only by 1 and itself. ...read more
Ans. Brute force approach
We use Brute Force to solve this problem.
 
1. We iterate from 2 to N.
2. For each number num, we check if it is prime or not. We use the following approach to check if a given number is prime.
   1. We loop through all numbers from 2 to num - 1.
   2. For every number in the loop, we check if it divides num.
   3. If we find any number that divides num, we can say num is not prime.
   4. If num is prime, we store it in the result...read more
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Round duration - 30 minutes
Round difficulty - Easy

This round was also held at 4.30pm. The round lasted for about 30minutes. At first he asked me to introduce myself. Later he asked about my internship done as front end engineer and asked about JavaScript dom, what was my role and told me to write a code for a table creation in html. Then he asked about python (I said i am comfortable with python and java). He then asked me code a string reversal program in both java and python. Then asked me to explain OOPs concepts. He asked me to write a program on function overloading and overwriting. Next he asked question about SQL,JOINS, Normalization and told me to write a query to retrieve 3rd highest salary among employees. He said that's all and asked me if i have any questions. That's all about my TR.

Q1. DBMS Question
What is Normalization and forms of normalization?
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Round duration - 15 minutes
Round difficulty - Easy

This round happened around 5.20pm and lasted for 15 minutes.

Q1. Basic HR Questions
Introduce yourself . 
Later briefly asked about my internship and what was my role and how I managed conflicts.
 Asked why are you choosing Mindtree and what quality that Mindtree...read more
Ans. 
Tip 1 : Do a background research and state some of the facts like number of employee, CEO etc.
Tip 2 : Tell about work culture in their company
Tip 3 : research about their different ethics of features that make them stand out among other companies
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