Braingrid Technologies Interview Questions and Answers

Round duration - 90 minutes
Round difficulty - Easy

The coding round consisted of 3 coding questions. 1st question was of 20 marks, 2nd and 3rd of 50 marks. I don't remember the other two questions.

Q1. 
Minimum Operations Problem Statement
Given an array ARR consisting of N positive integers, your task is to determine the minimum number of operations required to make all elements in the array equal. The ...read more
Ans. 
Minimum number of operations to make all elements in an array equal by using addition, multiplication, subtraction, or division.
• Iterate through the array to find the minimum and maximum values.

• Calculate the difference between the maximum and minimum values.

• The minimum number of operations required is the difference between the maximum and minimum values.
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Round duration - 30 minutes
Round difficulty - Easy

The interview contained mostly data structures and oops problems. I was asked to implement the node class of linked list and queue using circular array. He also asked me to explain polymorphism in detailing, overriding, overloading, runtime polymorphism etc with example. He asked some other questions which were mostly from DS and OOPS.

Round duration - 30 minutes
Round difficulty - Easy

The interview was online from home.
There were a few audio cuts in the video call but we were able to manage regardless.

Q1. 
Reverse Words in a String: Problem Statement
You are given a string of length N. Your task is to reverse the string word by word. The input may contain multiple spaces between words and may have leading o...read more
Ans. 
Reverse words in a string while handling leading/trailing spaces and multiple spaces between words.
• Split the input string by spaces to get individual words

• Reverse the order of the words

• Join the reversed words with a single space in between

• Handle leading/trailing spaces by trimming the final output
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