The DataTech Labs Software Engineer Trainee Interview Questions and Answers

Q1. Given the react machine coding example
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Q1. Explain about your projects
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In the coding test, there were 2 problems based on arrays and hashing (easy to medium level leetcode)

Q1. Several OOP questions were asked.... like, Can we have a class inside an interface? Can we have a static constructor? Can we have multiple main methods?
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Q2. DBMS question: Normalization questions and keys concepts.
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Q1. DSA question (stack based) You have a stack full of numbers, you have to arrange them in ascending order in the same stack without using any other data structure.
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Q2. OS and DBMS questions(sharding, semaphores, etc.)
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Q1. Questions based on Consultadd principles.
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Q1. A Lot of OOPS and Virtual concept
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Q2. Basic SQL till joins
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Q3. Java script medium
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Q4. C# oops output based
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Dsa problems dp and tress problem

Q1. Tell me about your self
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Q2. Projects and intership
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Q1. I don't know why they rejected me
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Q2. What ever they asked me for coding part the output is correct and logic is also correct
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Q1. About the project. and asked what i did in project. how to create schema in pyspark. what is ADE. what are the difficulties i faced in project. what is spark submit command how we write sparksubmit command...read more
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Q2. No of occurrences of letter in a string.
Ans. 
Count occurrences of a letter in a string.
• Iterate through each character in the string and count occurrences of the specified letter.

• Use a hashmap to store the count of each letter.

• Handle both uppercase and lowercase letters to ensure accurate counting.
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Question based on array string linkedlist