Hitachi Digital Services Intern Interview Questions, Process, and Tips

Research on topic on python and web scraping

Q1. Oops concepts and data structures
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Q2. Dbms questions where based on normalization
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It was not good, it contain mostly question of java programming.

Q1. Print factorial of n through recursion Sum of all n numbers
Ans. 
Factorial of n and sum of n numbers using recursion
• Create a recursive function to calculate factorial of n

• Use a recursive function to calculate the sum of all n numbers

• Handle base cases for both factorial and sum calculations

• Example: Factorial of 5 = 5 * 4 * 3 * 2 * 1 = 120, Sum of first 5 numbers = 1 + 2 + 3 + 4 + 5 = 15
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Two questions were asked and answered both

Two programs on Java was asked on loops and collections

Q1. Steps in tablet production?
Ans. 
Tablet production involves several steps including formulation, mixing, granulation, drying, compression, coating, and packaging.
• Formulation of active ingredients and excipients

• Mixing of ingredients to ensure uniform distribution

• Granulation to form granules for compression

• Drying to remove moisture content

• Compression of granules into tablet form

• Coating for taste masking or controlled release

• Packaging for distribution an
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Q1. What is steps of tablet production?
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Q1. Semaphore definition and a problem on in
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Q2. Normalization in DBMS
Ans. 
Normalization is the process of organizing data in a database to reduce redundancy and improve data integrity.
• Normalization involves breaking down a table into smaller tables and establishing relationships between them.

• There are different levels of normalization, with each level addressing a specific type of data redundancy.

• Normalization helps to prevent data inconsistencies and anomalies, and improves database perform...read more
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Q3. Oops, inheritance and polymorphism
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Round duration - 60 Minutes
Round difficulty - Medium

Interview was scheduled in afternoon. It was more on OOPs and DSA.

Q1. 
Check If Linked List Is Palindrome
Given a singly linked list of integers, determine if the linked list is a palindrome.
Explanation:
A linked list is considered a palindrome if it reads the same forwar...read more
Ans. 
I gave O(n) both time and space solution using stacks but interviewer asked to optimize it and give clue as well.

I understood the clue and was able to optimise the code. I was not asked to code in this round just had an discussion but few of my peers were asked to write code as well.
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Round duration - 20 Minutes
Round difficulty - Easy

She asked me more about myself and few projects in resume. It was more of formal discussion than an interview round. I was very comfortable and she aksed me about my location preference at end of. Interview.