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Duration - 1hr, Mostly questions are from Excel and SQL ( But a little knowledge of R and Python is very useful) .For me, it's knowing the concepts and answering no codes were ask to write.
I applied via Naukri.com and was interviewed before Jul 2023. There were 3 interview rounds.
I was asked with SQL querying questions.
Guestimates, sql questions
Sql questions geeks for geeks
I applied via LinkedIn and was interviewed in Sep 2020. There was 1 interview round.
Sharing data insights can help improve services and identify revenue opportunities.
Analyzing customer behavior can help identify areas for improvement
Identifying trends in sales data can help optimize pricing strategies
Using data to personalize marketing efforts can increase customer engagement
Predictive modeling can help identify potential revenue opportunities
Tracking key performance indicators can help optimize busi
I applied via Referral and was interviewed in Aug 2024. There was 1 interview round.
Moving Average is a statistical technique used to analyze data points by creating a series of averages of different subsets of the full data set.
Moving Average helps in smoothing out fluctuations in data to identify trends over time.
It is calculated by taking the average of a specific number of data points within a defined window.
For example, a 3-day moving average for stock prices would be the average of the stock pri...
Decorators in Python are functions that modify the behavior of other functions.
Decorators are denoted by the @ symbol followed by the decorator function name.
They allow you to add functionality to an existing function without modifying its code.
Common use cases include logging, timing, and authentication.
Example: @decorator_function def function_to_decorate(): pass
Object Oriented Programming is a programming paradigm based on the concept of objects, which can contain data and code.
OOP focuses on creating objects that interact with each other to solve complex problems.
Objects have attributes (data) and methods (functions) that can manipulate the data.
Encapsulation, inheritance, and polymorphism are key principles of OOP.
Example: In a car simulation program, a 'Car' object can hav...
Classes are blueprints for creating objects in object-oriented programming.
Classes define the properties and behaviors of objects
Objects are instances of classes
Classes can inherit properties and behaviors from other classes
Classes can have constructors to initialize objects
Classes can have methods to perform actions
Functions are blocks of code that perform a specific task and can be reused multiple times in a program.
Functions help in organizing code and making it more modular.
They can take input parameters and return output values.
Functions can be called multiple times from different parts of the program.
Examples: summing two numbers, finding the maximum value in a list.
Swap L1 and L5 in a list
Create a temporary variable to store the value of L1
Assign the value of L5 to L1
Assign the value of the temporary variable to L5
I applied via Naukri.com and was interviewed in Nov 2024. There were 2 interview rounds.
SQL, excel, tableau , looker studio
I was interviewed in Aug 2024.
Calculate the number of rows after joining two datasets.
Count the number of rows in each dataset
Perform the join operation
Count the number of rows in the resulting dataset
Use Excel's text to columns feature to split person names into separate columns.
Select the column containing the full names
Go to the Data tab and click on Text to Columns
Choose 'Delimited' and select the delimiter that separates the names (e.g. space)
Click Finish to split the names into separate columns
I was interviewed before Feb 2021.
Round duration - 65 minutes
Round difficulty - Easy
There were 2 sections –
Aptitude and Logical Reasoning and MCQ based on Java question ,C++, coding for 20 min and 45 min respectively.
Section A- Not very difficult to clear this round although less time was a problem.
Section B- It contains 15 multiple choice question on c/c++,java and 4 simple coding questions
Determine if a given singly linked list of integers forms a cycle or not.
A cycle in a linked list occurs when a node's next
points back to a previous node in the ...
Detect if a singly linked list forms a cycle by checking if a node's next pointer points back to a previous node.
Traverse the linked list using two pointers, one moving at double the speed of the other.
If the two pointers meet at any point, there is a cycle in the linked list.
Use Floyd's Cycle Detection Algorithm for O(N) time complexity and O(1) space complexity.
Round duration - 75 minutes
Round difficulty - Medium
It was an online coding test in which 3 coding question were given.
Given two strings, S
and X
, your task is to find the smallest substring in S
that contains all the characters present in X
.
S = "abdd", X = "bd"
Find the smallest substring in string S that contains all characters in string X.
Iterate through string S and keep track of characters in X found in a window
Use two pointers to maintain the window and slide it to find the smallest window
Return the smallest window containing all characters in X
Given a non-decreasing sorted array ARR
of N
positive numbers, determine the smallest positive integer that cannot be expressed as the sum of elements from...
Find the smallest positive integer that cannot be expressed as the sum of elements from any proper subset of a non-decreasing sorted array of positive numbers.
Start with the smallest possible integer that cannot be represented, which is 1.
Iterate through the array and update the smallest integer that cannot be represented.
If the current element is greater than the smallest integer that cannot be represented, return tha...
Given a square chessboard of size 'N x N', determine the minimum number of moves a Knight requires to reach a specified target position from its initial position...
Calculate the minimum number of moves a Knight needs to reach a target position on a chessboard.
Implement a function that takes knight's starting position, target position, and chessboard size as input
Use breadth-first search algorithm to find the shortest path for the Knight
Consider all possible 8 movements of the Knight on the chessboard
Return the minimum number of moves required for the Knight to reach the target po
Round duration - 60 minutes
Round difficulty - Easy
It started with a discussion on the programs given in coding round. They asked me about my interest field after that they directly jumped into Networking, Linux and Ethical Hacking part looking my interest domain. They asked me various question on networking and linux.
Then they asked me to code a simple c program
Given a singly linked list of integers, return the head of the reversed linked list.
Initial linked list: 1 -> 2 -> 3 -> 4 -> NULL
Reversed link...
Reverse a singly linked list of integers and return the head of the reversed linked list.
Iterate through the linked list and reverse the pointers to point to the previous node.
Keep track of the current, previous, and next nodes while reversing the linked list.
Update the head of the reversed linked list as the last node encountered during reversal.
FTP uses port number 21 and SMTP uses port number 25.
FTP uses port 21 for data transfer and port 20 for control information.
SMTP uses port 25 for email communication.
Understanding port numbers is important for network communication.
The OSI Model is a conceptual framework that standardizes the functions of a telecommunication or computing system into seven layers.
The OSI Model stands for Open Systems Interconnection Model.
It consists of seven layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application.
Each layer has specific functions and communicates with the adjacent layers.
Example: Layer 1 (Physical) deals with physi...
To copy files in Linux, you can use the 'cp' command.
Use the 'cp' command followed by the source file and destination directory to copy a file.
To copy a directory and its contents, use the '-r' flag with the 'cp' command.
You can also use wildcards like '*' to copy multiple files at once.
Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.
Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.
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