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Billfree Labs Software Developer Intern Interview Questions and Answers

Updated 15 Sep 2021

Billfree Labs Software Developer Intern Interview Experiences

1 interview found

I was interviewed before Sep 2020.

Round 1 - Telephonic Call 

(2 Questions)

Round duration - 30 minutes
Round difficulty - Easy

I was asked about Polymorphism, which is a concept of OOP. I was given a problem and asked to solve it in as many different ways as possible.

  • Q1. Why is the use of a Database Management System (DBMS) recommended?
  • Ans. 

    DBMS is recommended for efficient data storage, retrieval, and management.

    • Ensures data integrity and consistency

    • Provides data security through access control and encryption

    • Supports concurrent access by multiple users

    • Offers data backup and recovery mechanisms

    • Enables efficient querying and indexing for faster data retrieval

  • Answered by AI
  • Q2. 

    Minimum Operations to Make Strings Equal

    Given two strings A and B consisting of lowercase English letters, determine the minimum number of pre-processing moves required on string A to make it equal to st...

  • Ans. 

    The minimum number of pre-processing moves required on string A to make it equal to string B using specified operations.

    • Iterate through both strings and count the number of differences between corresponding characters.

    • For each difference, check if it can be resolved using the given operations.

    • If the differences cannot be resolved, return -1; otherwise, return the total number of pre-processing moves needed.

  • Answered by AI

Interview Preparation Tips

Professional and academic backgroundI completed Computer Science Engineering from NIT Rourkela. I applied for the job as SDE - Intern in NoidaEligibility criteriaNoneBillFree Labs interview preparation:Topics to prepare for the interview - Data Structures, OOPs, Algorithms, Pointers, JavaScriptTime required to prepare for the interview - 1 monthInterview preparation tips for other job seekers

Tip 1 : Listen to the interviewer
Tip 2 : Think before you speak
 

Application resume tips for other job seekers

Tip 1 : Write everything clearly.
Tip 2 : Don't use too many colors.

Final outcome of the interviewRejected

Skills evaluated in this interview

Interview questions from similar companies

I applied via Campus Placement and was interviewed before Jun 2020. There were 3 interview rounds.

Interview Questionnaire 

2 Questions

  • Q1. Simple program
  • Q2. I wrote a simple program in C

Interview Preparation Tips

Interview preparation tips for other job seekers - Be bold and confident

I applied via Campus Placement and was interviewed before Jun 2020. There were 3 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Tell me about Yourself, some questions related to machine learning, and I was asked more questions to differentiate like differences between ml and ai, python and c, c and java and procedural and functiona...

Interview Preparation Tips

Interview preparation tips for other job seekers - Get a complete grip on your resume and be confident about what you say, If you don't know the answer it is okay to agree that you don't know the answer so that interviewer can ask the next questions.

I was interviewed before Jun 2021.

Round 1 - Coding Test 

(2 Questions)

Round duration - 180 minutes
Round difficulty - Easy

It was an mcq + coding round. There were aptitude and ouput based question in mcq. And coding questions were easy

  • Q1. 

    Find the Duplicate Number Problem Statement

    Given an integer array 'ARR' of size 'N' containing numbers from 0 to (N - 2). Each number appears at least once, and there is one number that appears twice. Yo...

  • Ans. 

    Find the duplicate number in an array of integers from 0 to (N-2).

    • Iterate through the array and keep track of the frequency of each number using a hashmap.

    • Return the number with a frequency greater than 1 as the duplicate number.

    • Time complexity can be optimized to O(N) using Floyd's Tortoise and Hare algorithm.

  • Answered by AI
  • Q2. 

    Reverse String Operations Problem Statement

    You are provided with a string S and an array of integers A of size M. Your task is to perform M operations on the string as specified by the indices in array A...

  • Ans. 

    Given a string and an array of indices, reverse substrings based on the indices to obtain the final string.

    • Iterate through the array of indices and reverse the substrings accordingly

    • Ensure the range specified by each index is non-empty

    • Return the final string after all operations are completed

  • Answered by AI
Round 2 - Video Call 

Round duration - 60 Minutes
Round difficulty - Easy

It was technical + hr round. there were 2 people as interviewer. They stated from intro and asked some basic puzzles and hr questions. After that they asked about my projects, technologies and some ds algo and dbms questions.

Interview Preparation Tips

Eligibility criterianaAccenture interview preparation:Topics to prepare for the interview - Data Structures, Pointers, OOPS, System Design, Algorithms, Dynamic ProgrammingTime required to prepare for the interview - 6 MonthsInterview preparation tips for other job seekers

Tip 1 : Practice aptitude
Tip 2 : Focus on practicing coding
Tip 3 : Learn from mistakes

Application resume tips for other job seekers

Tip 1 : Mention some projects that you have done
Tip 2 : Try to have skills that are required for the role

Final outcome of the interviewSelected

Skills evaluated in this interview

I applied via Company Website and was interviewed in Oct 2018. There was 0 interview round.

Interview Preparation Tips

General Tips: This interview was a technical one but was majorly a stress test. It lasted for about 1 hour 10 minutes. The interviewer wanted to test both my knowledge and communication skills. Most of the questions asked to me were related to my B.Tech curriculum i.e. computer science related topics. He stressed a lot on the basics related to my project topic. Luckily I was able to answer most of the questions correctly. I tried to answer each question with examples and also used props on the table (like pens, paperweights, pen stands etc.) to explain my theories. It was my first offcampus interview, and I think I did pretty well for a fresher.
You need to stay calm and should apply presence of mind. Please go through the job description thoroughly word-by-word and recheck your resume to ensure that you are a best-fit for the position.
Skills: Communication, Body Language, Problem Solving, Leadership, Presentation Skills
Duration: <1 week

Interview Questionnaire 

6 Questions

  • Q1. What is fan trap? How to solve it? Give one example.
  • Ans. 

    Fan trap is a situation in which a query involving multiple tables results in a Cartesian product.

    • Fan trap occurs when a table is connected to multiple tables in a one-to-many relationship.

    • It can be solved by creating a bridge table or by using aggregate functions.

    • For example, if a customer table is connected to an orders table and a products table, a fan trap can occur when trying to retrieve information about custome...

  • Answered by AI
  • Q2. Two tables are joined. But joined type are not mentioned, then how much records will retrieve using select statement.
  • Q3. How to use dynamic break in report?
  • Ans. 

    Dynamic break in report allows for automatic page breaks based on data.

    • Define a break field in the report design

    • Set the break field to trigger a page break when its value changes

    • Use dynamic break to automatically adjust page breaks based on data

    • Example: A report on sales by region can use dynamic break to create a new page for each region

  • Answered by AI
  • Q4. Use of foreach function in report.
  • Ans. 

    Foreach function is used to iterate through an array of strings in a report.

    • Foreach function is used to loop through each element in an array of strings.

    • It can be used to display each element in a report.

    • Example: foreach(string item in stringArray){ Console.WriteLine(item); }

  • Answered by AI
  • Q5. What is Aggregate awareness? When we use it? Syntax of it.
  • Ans. 

    Aggregate awareness is a feature in Business Objects that allows reports to be optimized for performance by using aggregate tables.

    • Aggregate awareness is used when creating reports in Business Objects

    • It allows the report to use aggregate tables instead of detailed tables for improved performance

    • Syntax: AGGR_AWARE(, ,

      )

    • Example: AGGR_AWARE(Product, Sum(Sales), Sales_Fact_Table)

  • Answered by AI
  • Q6. @prompt function syntax and it's use.
  • Ans. 

    The @prompt function syntax is used to display a prompt message to the user and receive input.

    • The syntax is @prompt('message', 'default value')

    • The message is the prompt message to be displayed to the user

    • The default value is optional and will be displayed in the input field

    • The function returns the value entered by the user

  • Answered by AI

I applied via Naukri.com and was interviewed before Oct 2019. There were 3 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. What technical challenges have you faced in your work till now and how did you overcome it?

Interview Preparation Tips

Interview preparation tips for other job seekers - Be truthful and give detailed explanation of the issues and how it was resolved. Explain the severity of the problem and what blockage it had caused in your daily work. How did you chose a solution and how fast was it implemented.

I applied via Naukri.com and was interviewed before Dec 2020. There were 3 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. About the plsql..like functions.cursors.pakages and like that

Interview Preparation Tips

Interview preparation tips for other job seekers - from my experience its some meaning ful interested one..but after got selected...they will not respond on any support..like joining or about the assets setup and not even the situvations...as per my experience i really have a bad experience with rmg and also hr team..ultimatix login and all are not that quick responsive...as per mine ..not prefer tcs..
Interview experience
5
Excellent
Difficulty level
Hard
Process Duration
More than 8 weeks
Result
Not Selected

I applied via Walk-in and was interviewed before Jan 2022. There were 3 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Double-check your resume for any spelling mistakes. The recruiter may consider spelling mistakes as careless behavior or poor communication skills.
View all Resume tips
Round 2 - Aptitude Test 

Aptitude test duration 90 min 100 question

Round 3 - Coding Test 

Coding test 50 code 100 marks 60 min

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare well. code in c , c++ , java is very important

Interview Preparation Tips

Interview preparation tips for other job seekers - they ask question on basics and concepts more, rest interview is easy.
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