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Spark context is the main entry point for Spark functionality and represents the connection to a Spark cluster.
Main entry point for Spark functionality
Represents connection to a Spark cluster
Used to create RDDs, broadcast variables, and accumulators
SparkConfig is a configuration object used in Apache Spark to set various parameters for Spark applications.
SparkConfig is used to set properties like application name, master URL, and other Spark settings.
It is typically created using SparkConf class in Spark applications.
Example: val sparkConf = new SparkConf().setAppName("MyApp").setMaster("local")
Inheritance is a fundamental concept in object-oriented programming that allows a class to inherit properties and methods from another class.
Inheritance promotes code reusability by allowing new classes to use existing class functionality.
In programming languages like Java, a class can extend another class using the 'extends' keyword.
Example: If 'Animal' is a class, 'Dog' can inherit from 'Animal', gaining its pro...
In one box there are 12 red and 12 green balls and in another box there are 24 res and 24 green balls.
You have two balls choose from each of the box with replacement such that they have t...
The box with 12 red and 12 green balls has a better probability.
The probability of selecting two balls of the same color from the first box is higher due to the equal number of red and green balls.
In the second box, with 24 red and 24 green balls, the probability of selecting two balls of the same color is lower.
Therefore, the box with 12 red and 12 green balls has a better probability.
Given two strings, S
and T
with respective lengths M
and N
, your task is to determine the length of their longest common subsequence.
A subsequence is a sequen...
The task is to find the length of the longest common subsequence between two given strings.
Use dynamic programming to solve this problem efficiently.
Create a 2D array to store the lengths of longest common subsequences of substrings.
Iterate through the strings to fill the array and find the length of the longest common subsequence.
Example: For strings 'abcde' and 'ace', the longest common subsequence is 'ace' with...
Top 5 best things that happened during covid lockdown for you.
Byjus bussiness model
Why is it better to have online coaching classes
During the covid lockdown, I had more time to focus on personal projects, improved my cooking skills, spent quality time with family, learned new hobbies, and saved money by not eating out.
More time to focus on personal projects
Improved cooking skills
Quality time spent with family
Learned new hobbies
Saved money by not eating out
Calculate the Nth term in the Fibonacci sequence, where the sequence is defined as follows: F(n) = F(n-1) + F(n-2)
, with initial conditions F(1) = F(2) = 1
.
...
Calculate the Nth Fibonacci number efficiently using dynamic programming.
Use dynamic programming to store previously calculated Fibonacci numbers to avoid redundant calculations.
Start with base cases F(1) and F(2) as 1, then iterate to calculate subsequent Fibonacci numbers.
Time complexity can be optimized to O(N) using dynamic programming.
Example: For N = 5, the 5th Fibonacci number is 5.
You are a cab driver with a car that initially has 'C' empty seats. The car moves in a straight line towards the forward direction only. Your job is to determine if it is possi...
Determine if it is possible to accommodate all passenger trips within a car's capacity without exceeding it at any point.
Iterate through each trip and keep track of the total number of passengers in the car at each point.
Check if the total number of passengers exceeds the car capacity at any point.
Return 'True' if all trips can be accommodated within the car capacity, otherwise return 'False'.
What is an immutable object and why is it useful
Acid properties in dbms
Explain atomicity and what is d in acid.
Immutable objects are objects whose state cannot be modified after creation, providing benefits like thread safety and easier debugging.
Immutable objects are objects whose state cannot be changed once they are created.
They are useful for ensuring thread safety in concurrent programming.
Immutable objects simplify debugging as their state remains constant throughout the program.
Examples of immutable objects include ...
I applied via LinkedIn and was interviewed before Aug 2023. There were 2 interview rounds.
Online coding test with Sql and python questions
Spark context is the main entry point for Spark functionality and represents the connection to a Spark cluster.
Main entry point for Spark functionality
Represents connection to a Spark cluster
Used to create RDDs, broadcast variables, and accumulators
SparkConfig is a configuration object used in Apache Spark to set various parameters for Spark applications.
SparkConfig is used to set properties like application name, master URL, and other Spark settings.
It is typically created using SparkConf class in Spark applications.
Example: val sparkConf = new SparkConf().setAppName("MyApp").setMaster("local")
Coding testing with 15 questions MCQ based
I applied via Referral and was interviewed before Jan 2024. There were 3 interview rounds.
I applied via LinkedIn and was interviewed before Jul 2023. There were 2 interview rounds.
10 apti test questions with 2 coding and query based questions
2 programing questions with core python concept
I appeared for an interview before Dec 2020.
Round duration - 120 minutes
Round difficulty - Easy
After round 1 there was a break of 15 mins and the coding round started.
We had a choice to attempt the exam in R language & SQL or python & sql
I chose python and sql
It had 8 questions 4 python and 4 sql
Given two strings, S
and T
with respective lengths M
and N
, your task is to determine the length of their longest common subsequence.
A subsequence is a seque...
The task is to find the length of the longest common subsequence between two given strings.
Use dynamic programming to solve this problem efficiently.
Create a 2D array to store the lengths of longest common subsequences of substrings.
Iterate through the strings to fill the array and find the length of the longest common subsequence.
Example: For strings 'abcde' and 'ace', the longest common subsequence is 'ace' with leng...
Round duration - 15 minutes
Round difficulty - Medium
The interview was mostly analytical based and how you approach the round a few technical questions in dbms and oops were also asked.
Round duration - 20 Minutes
Round difficulty - Medium
Similar to first round
For Shortlists after elimination from first round.
You are a cab driver with a car that initially has 'C' empty seats. The car moves in a straight line towards the forward direction only. Your job is to determine if it is poss...
Determine if it is possible to accommodate all passenger trips within a car's capacity without exceeding it at any point.
Iterate through each trip and keep track of the total number of passengers in the car at each point.
Check if the total number of passengers exceeds the car capacity at any point.
Return 'True' if all trips can be accommodated within the car capacity, otherwise return 'False'.
Round duration - 20 minutes
Round difficulty - Easy
After two technical round interviews, the last round was a hr interview. The whole process can take up one whole day or more and your interview can be at any time
My process started at 5 pm and ended at 10:30 pm
All the interviewers were very friendly no pressure.
Calculate the Nth term in the Fibonacci sequence, where the sequence is defined as follows: F(n) = F(n-1) + F(n-2)
, with initial conditions F(1) = F(2) = 1
.
Calculate the Nth Fibonacci number efficiently using dynamic programming.
Use dynamic programming to store previously calculated Fibonacci numbers to avoid redundant calculations.
Start with base cases F(1) and F(2) as 1, then iterate to calculate subsequent Fibonacci numbers.
Time complexity can be optimized to O(N) using dynamic programming.
Example: For N = 5, the 5th Fibonacci number is 5.
Tip 1 : Be fast ans accurate on your aptitude amd verbal tests.
Tip 2 : In coding round, depending on the difficulty of the questions the time in which you complete solving them should decrease .If almost everyone can solve them timming comes in to the equation for shortlisting
Tip 3 : While submitting your resume, please be honest about the projects you have done and do not bluff about it because in the interview when you ate drilled abt it, they can catch you easily.
Tip 4 : be confident and answer every question to the best of your ability and if u don't know something, tell them you don't know abt it .
Tip 1 : Research the company and put the most revalent projects and skills that the company os looking for specifically
Tip 2 : Do not bluff or lie on your resume. It show's during the interview.
I applied via Job Portal and was interviewed in Apr 2021. There was 1 interview round.
I applied via Job Portal and was interviewed in Apr 2021. There was 1 interview round.
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