TNQ Tech Private Limited Software Developer Interview Questions and Answers for Experienced

There were 3 coding questions on Hacker Earth platform for 1 hour 15min and 1 question from array and 2 questions from strings.

Q1. This round was based on SQL, DBMS, DSA, OOPS SQL--> Designed the complete schema for one of my projects for COVID-19 vaccination. and SQL queries from that schema. DSA--> 1.) Find the pair in an array whos...read more
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Q1. This was a technical managerial round. OOPS--> Example of overloading and overriding. Mostly DBMS and SQL-based questions like what is indexing and SQL queries and joins. DSA--> 1.) Write one sorting algo....read more
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Q1. Just a normal discussion regarding my tech stack and my internship experience only 15mins.
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Coding test with 2 questions

Q1. Technical interview round
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Best Time to sell and buy stock

Q1. Promises, closures, hoisting in JS
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Q2. Classes and Object Prototyping
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The written test involved qiestions from bssic aptitude, computer fundamentals and coding.

Q1. This was a technical discussion with the pannel. The discussion was mostly based in what's written in resume. Expect the questions from Java, OOPs, Data structures, SQL.
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Q1. This was a one on one discussion with the manager. It was mostly to identify if the candidate meets basic non technical requirements for the job role.
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Q1. This round was little tricky as i was interviewed by the HR head since all other HRs were busy interviewing other candidates. it was mostly to check the communication skills, flexibility of the employee, t...read more
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Q1. Tell me about yourself
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Aptitude regarding all topics also verbal reasoning

Coding related to any language and also machine learning

Q1. Regarding self intro
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Q2. Self intro, rotational shifts ok
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It was a 90 minute coding test, involving 3 problems:
1-Given points on a 2d plane, you can delete one point, what is the minimum maximum distance you can have?
2-LFU Cache
3-Given an array with elements 0,1, your task is to find number of ways to divide this array into contiguous chunks so that each chunk has only one 1 in it.

Q1. How do you avoid method overriding?
Ans. 
To avoid method overriding, make the method final or private.
• Declare the method as final to prevent it from being overridden in subclasses.

• Declare the method as private to hide it from subclasses.

• Use the @Override annotation to ensure that a method is actually overriding a superclass method.
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Q2. What is the 'finalize' keyword for?
Ans. 
The 'finalize' keyword is used in Java to perform cleanup operations before an object is garbage collected.
• The 'finalize' method is called by the garbage collector before reclaiming an object's memory.

• It can be used to release resources like closing files or sockets.

• It is not recommended to rely on 'finalize' for resource cleanup as it is not guaranteed to be called.
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DSA Hackerrank assessment

Q1. DSA questions - Tree, Binary Search
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Q2. 2sum various approaches
Ans. 
The 2sum problem involves finding two numbers in an array that add up to a given target.
• One approach is to use a hash table to store the complement of each number as we iterate through the array.

• Another approach is to sort the array and use two pointers, one starting from the beginning and the other from the end, to find the pair.

• If the array is sorted, we can also use binary search to find the complement of each numbe
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