Unthinkable Solutions Interview Questions, Process, and Tips

I participated in a coding round on their platform, which consisted of three coding questions in 60 min. however, their editor and compiler were quite inadequate. The event was held onsite, with 500 candidates arriving on January 11, 2024, at 9 AM. Approximately 100 candidates cleared that round.

I solved all three questions, yet we still had to participate in the second round, which included one coding question to be completed in 20 minutes. The question was poorly framed, leading to the rejection of most students. However, I managed to solve all the test cases.

The coding round comprised one question and was conducted on paper for a duration of 10 minutes.

Q1. It was the puzzle question involving five numbered fingers where you need to determine which finger corresponds to a given number in constant time complexity O(1)?
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Q2. Write code for searching in a 2D matrix with a time complexity of O(mlogn)?
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Q3. How would you design a store management system, including all relevant schema tables?
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Q4. Design schema of your project
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Q5. Design category schema where category can have multiple sub categories
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Q1. Questions related to javascript
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Q2. Sql queries which consists of group and joins
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Q1. Can you provide your introduction?
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Q2. Why do you want to join this company?
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Round 1 -> 3 easy coding questions (I did all three)
round2 -> 2 coding questions (1 was leetcode's trapping rainwater problem) (Did 1.5)

Q1. SQL query was asked on joins etc
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Q2. What are Microservcies, solid principles, a pattern printing question, oops concepts
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Q1. Designing dbms for a college website
Ans. 
Designing a DBMS for a college website involves creating tables for students, courses, faculty, and more.
• Create tables for students, courses, faculty, departments, etc.

• Establish relationships between tables using foreign keys.

• Include attributes like student ID, course ID, faculty ID, etc.

• Implement normalization to reduce redundancy and improve data integrity.

• Consider implementing views for complex queries or reports.
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Q2. Implement debouncing, create a nodejs server with a get / post api, a puzzle, javascript questions like clousers, let / var / const, event loop, output based questions etc.
Ans. 
Implement debouncing, create a nodejs server with get/post api, and answer JavaScript questions.
• Implement debouncing by using setTimeout and clearTimeout to limit the number of times a function is called.

• Create a nodejs server with Express framework to handle get and post requests.

• Answer JavaScript questions on closures, let/var/const, event loop, and output based questions.

• Provide examples for each concept to demonstr
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Coding test of mixed level hard beginners medium

Q1. Questions related to coding
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Q2. Python programming
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Q3. C++ programof swap
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Q1. About myself and hobby
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There were 3 questions:
1. Given a string check if it is possible to rearrange the elements of the string to form a palindrome. [Check GFG for the question]
2. Given an integer n, print n rows of following pattern.
Example :
n = 7
* * * * * * *
* *
* * * * *
* * * *
* * * * *
* *
* * * * * * *
3. Cut the sticks [Check hacker rank for the question desc.]
Total duration 90 mins.

I was directly shortlisted for PI. Hence did not sit for this round but I am aware that there were 2 DSA questions in 40 mins. One was pattern and other was is Anagram question on leetcode valid anagram question.

Q1. Resume discussion with basic questions on projects
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Q2. Couple of SQL queries
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Q3. Basics of DBMS, OOPS
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Q4. 3 DSA questions
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Q1. Basic programming question 1. Longest Palindromic Substring 2. Pattern : a b b c c c 3. Given a string "ccabdd" convert to "c2a1b1d2"
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Q2. Thorough Resume Based questions each and every technology mentioned in resume was asked in great detail.
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Q1. Introduce Yourself
Ans. 
I am a passionate software developer with experience in Java, Python, and web development.
• Experienced in Java and Python programming languages

• Proficient in web development technologies like HTML, CSS, and JavaScript

• Completed multiple projects showcasing my skills
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Q2. Will you like to work in a team or Solo
Ans. 
I prefer working in a team as it allows for collaboration, diverse perspectives, and shared responsibilities.
• Collaboration with team members leads to better problem-solving and innovation

• Diverse perspectives can lead to more creative solutions

• Shared responsibilities help distribute workload and prevent burnout
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Q3. Explain your projects
Ans. 
Developed a web application for tracking personal fitness goals and progress
• Used HTML, CSS, and JavaScript for front-end development

• Implemented a RESTful API using Node.js and Express for back-end functionality

• Utilized MongoDB for database management

• Incorporated chart.js for visualizing progress data
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Q1. Explain the first 3 months if you are hired
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Q2. Fair dealing, but everyone and everything seemed rushed, as if they would like to see magic within 3 months
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