Datametica Solutions Private Limited interview experience Real time questions & tips from candidates to crack your interview
Associate Engineer Intern
Datametica Solutions Private Limited
3 rounds | 4 Coding
problems
Selected Interview preparation journey
Preparation
Duration: 1 month
Topics: Object Oriented programming, Java, Data Structures and Algorithms (Arrays, Linked lists, queues etc.), SQL, DBMS Concepts
Tip 1 : Be good in at least one programming language out of Python or Java because company's tech stack is mostly in these two languages. You don't need to prepare tough DSA questions, just some simple array or string based questions will be asked.
Tip 2 : Prepare DBMS and SQL very well. They do ask SQL queries in the online test as well as in the interview as well.
Tip 3 : Prepare for in person interview because the company tries very hard to take offline interviews at their office. Also please don't bluff during your interview or in your resume for that matter because you might get caught and it leaves a very bad impression. If you don't know the answer to a question, just say I don't know the answer, sorry.
Application process
Where: Referral
Eligibility: Above 7 CGPA
Tip 1 : Mention your projects in detail along with their demos and hosted links.
Tip 2 : If you have done internships previously, please mention the tech stack and bold the keywords for example technology used or impact that your work made etc.
Interview rounds
01
Round
Easy
Online Coding Interview
Duration90 minutes
Interview date6 Feb 2022
Coding problem1
There were 2 programming questions and 1 SQL question. First question was a straight forward sorting based question. The second one was a little bit tricky based on hashing, but I managed to clear it. The SQL question was also very straight forward based basic order by and group by clauses.
1. Second largest element in the array
Easy
15m average time
80% success
0/40
Asked in companies
You have been given an array/list 'ARR' of integers. Your task is to find the second largest element present in the 'ARR'.
Note:
a) Duplicate elements may be present.
b) If no such element is present return -1.
Example:
Input: Given a sequence of five numbers 2, 4, 5, 6, 8.
Output: 6
Explanation:
In the given sequence of numbers, number 8 is the largest element, followed by number 6 which is the second-largest element. Hence we return number 6 which is the second-largest element in the sequence.
Problem approach
I first sorted the array.
Then simply returned n-2th element in the array.
This problem can also be solved in O(n) time by keeping track of largest and second largest number respectively and updating these numbers whenever there is a number larger than the largest number so far.
02
Round
Easy
Video Call
Duration25 minutes
Interview date8 Jun 2022
Coding problem2
The round basically went on based on the introduction i gave. I mentioned Android development and Java in my intro so the interviewer began to ask questions based on Java. He then asked about some DBMS Concepts. The interview happened at around 4 pm and was not difficult to crack at all.
1. Java Questions
Asked some basic Java questions like exception handling, JVM, JDK etc.
2. DBMS Questions
Normalisation, ACID properties, SQL temp tables, Keys, joins etc.
03
Round
Easy
HR Round
Duration10 minutes.
Interview date11 Jun 2022
Coding problem1
The interviewer came in 10 minutes late and only asked me give my introduction. She was impressed by my introduction and said that she had no further questions to ask me since in the previous round they had already asked me all technical questions.
1. Basic HR Questions
- Introduce yourself
- Why should we hire you?
- What is your biggest achievement till now?
- What is the biggest challenge that you faced in your life till now?
Here's your problem of the day 
Solving this problem will increase your chance to get selected in this company
Skill covered: Programming
What is recursion?
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