BlueBinaries Engineering and Solutions Senior Software Engineer Interview Questions and Answers

Round duration - 90 minutes
Round difficulty - Medium

It was Technical + Aptitude MCQ round.The technical section consisted if MCQ related to DSA,OS,DBMS.The aptitude section consisted of questions related to basic mathematics.

Q1. 
Candies Distribution Problem Statement
Prateek is a kindergarten teacher with a mission to distribute candies to students based on their performance. Each student must get at least one candy, and if two s...read more
Ans. 
The task is to distribute candies to students based on their performance while minimizing the total candies distributed.
• Create an array to store the minimum candies required for each student.

• Iterate through the students' ratings array to determine the minimum candies needed based on the given criteria.

• Consider the ratings of adjacent students to decide the number of candies to distribute.

• Calculate the total candies req...read more
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Round duration - 30 minutes
Round difficulty - Medium

It was a technical interview testing the basic skills of OS and DBMS of candidates along with few project discussions from your CV.

Q1. Can you write 15 Linux commands along with their functions?
Ans. 
List of 15 Linux commands with their functions
• ls - list directory contents

• pwd - print working directory

• cd - change directory

• mkdir - make a new directory

• rm - remove files or directories

• cp - copy files and directories

• mv - move or rename files and directories

• grep - search for patterns in files

• chmod - change file permissions

• ps - display information about running processes

• top - display and update sorted information about pr...read more
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Q2. What are DDL (Data Definition Language) and DML (Data Manipulation Language)?
Ans. 
DDL is used to define the structure of database objects, while DML is used to manipulate data within those objects.
• DDL includes commands like CREATE, ALTER, DROP to define database objects like tables, indexes, etc.

• DML includes commands like INSERT, UPDATE, DELETE to manipulate data within tables.

• Example of DDL: CREATE TABLE employees (id INT, name VARCHAR(50));

• Example of DML: INSERT INTO employees VALUES (1, 'John Doe
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Q1. Prime number using any popular language
Ans. 
A prime number is a number greater than 1 that can only be divided by 1 and itself.
• Use a loop to check if the number is divisible by any number other than 1 and itself

• Start checking from 2 up to the square root of the number for efficiency

• If the number is only divisible by 1 and itself, it is a prime number
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Q2. Reverse string using any popular language
Ans. 
Reverse a string using popular programming languages
• Use built-in functions like reverse() in Python

• Iterate through the string in reverse order in C++

• Use StringBuilder.reverse() in Java
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Prepared jeneral Aptitude

Technical and coding questions

Simple aptitude questions focing on english

Q1. All java basic and advanced questions
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Q2. Remove duplicatefrom string
Ans. 
Use a set to remove duplicates from a string
• Create a set to store unique characters

• Iterate through the string and add each character to the set

• Convert the set back to a string to get the result
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Q3. Write star pattern
Ans. 
Print a star pattern using loops
• Use nested loops to print the desired pattern

• Start with a small pattern and then increase complexity

• Use '*' character to represent the stars

• Example: For a simple pattern, you can use a loop to print '*' in a single line
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Q4. Find length of string they give string
Ans. 
Use the length() function to find the length of the given string.
• Use the length() function in programming languages like Java, Python, C++, etc.

• For example, in Java: String str = 'hello'; int length = str.length();

• Make sure to handle edge cases like empty strings or null values.
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Q5. Replace characters from string
Ans. 
Replace characters from string with another character
• Use a loop to iterate through each character in the string

• Check if the character needs to be replaced and replace it with the desired character

• Return the modified string
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General aptitude questions at entrance level

Q1. Mostly they asked about windows, troubleshooting in windows
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It was easy, just go through basic coding questions and you'll be good

Q1. Go through networking terms, OSI layer, TCP/IP, BIOS and system questions
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