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Swap two numbers using arithmetic operations without a third variable.
Use addition and subtraction: a = a + b; b = a - b; a = a - b.
Example: a = 5, b = 3; after operations, a = 3, b = 5.
Use XOR bitwise operation: a = a ^ b; b = a ^ b; a = a ^ b.
Example: a = 5 (0101), b = 3 (0011); after operations, a = 3, b = 5.
ACID Properties are a set of properties that ensure database transactions are processed reliably.
ACID stands for Atomicity, Consistency, Isolation, and Durability.
Atomicity ensures that a transaction is treated as a single, indivisible unit of work.
Consistency ensures that a transaction brings the database from one valid state to another.
Isolation ensures that concurrent transactions do not interfere with each oth...
A linked list is a linear data structure where each element is a separate object with a pointer to the next element.
In Java, a linked list is implemented using the LinkedList class in the java.util package.
LinkedList class provides methods like add(), remove(), get(), etc. to manipulate the list.
Each element in the list is represented by a node object which contains the data and a reference to the next node.
Linked...
A deadlock is a situation where two or more processes are unable to proceed due to a circular dependency.
Deadlock occurs when two or more processes are waiting for each other to release resources.
To avoid deadlock, use techniques like resource allocation graph, banker's algorithm, and deadlock prevention.
Resource allocation graph is a visual representation of resource allocation and can help identify potential dea...
SQL is a relational database while NoSQL is non-relational. MongoDB is preferred for scalability and flexibility.
SQL is table-based while NoSQL is document-based
SQL is structured while NoSQL is unstructured
SQL is vertically scalable while NoSQL is horizontally scalable
MongoDB is preferred for its ability to handle large amounts of unstructured data and its flexibility in schema design
MySQL is preferred for its str...
You are provided with a two-dimensional array named MATRIX
of size N x M, consisting of integers. Your task is to return the elements of the matrix following a spiral order.
Implement a function to return elements of a matrix in spiral order.
Iterate through the matrix in a spiral order by adjusting boundaries as you move along.
Keep track of the direction of movement (right, down, left, up) to traverse the matrix correctly.
Handle edge cases like when the matrix is a single row or column separately.
Given two 1-dimensional arrays containing strings of lowercase alphabets, determine and return the elements that are common in both arrays, i.e., ...
Given two arrays of strings, find and return the common elements in the order they appear in the second array.
Iterate through the strings in the second array and check if they exist in the first array.
Maintain a set to keep track of common elements to avoid duplicates.
Return the common elements as a single space-separated string in the order they appear in the second array.
Given a 2D array 'MATRIX' of size M x N, find and return the value (i * i + j * j) for those elements where the sum of the cubes of its digits equals the element itself. He...
Given a 2D array, find elements where sum of cube of digits equals element itself and return (i * i + j * j) value.
Iterate through the 2D array and check if the sum of cube of digits equals the element itself.
Calculate (i * i + j * j) for such elements and return the values.
If no such element exists, return -1.
Convert a given decimal number into its equivalent octal representation.
The octal number system is a base-8 system, meaning each digit ranges f...
Convert decimal numbers to octal representation.
Iterate through each test case and use built-in functions to convert decimal to octal.
Ensure the output is in base-8 system with digits ranging from 0 to 7.
Handle constraints such as number of test cases and range of decimal numbers.
It was an aptitute round and 2 coding questions was there
I'm a passionate software engineer with a strong background in full-stack development and a love for solving complex problems.
Graduated with a degree in Computer Science from XYZ University.
Worked at ABC Corp, where I developed a web application that improved user engagement by 30%.
Proficient in languages like JavaScript, Python, and Java, with experience in frameworks such as React and Django.
Enjoy collaborating in ag...
I appeared for an interview before Jun 2024, where I was asked the following questions.
I applied via Campus Placement and was interviewed before Feb 2023. There were 3 interview rounds.
First round had both aptitude and as well as 2 coding questions. It was on campus for me. So the question was easy.
I applied via Campus Placement and was interviewed before Mar 2023. There were 3 interview rounds.
Easy - medium can attempt easily
I appeared for an interview before Feb 2024.
Four coding questions ,two were very simple, while two were of medium difficulty.
I applied via Campus Placement and was interviewed before Dec 2023. There were 4 interview rounds.
2 easy programming questions, some aptitude, some English vocab
I applied via Recruitment Consultant and was interviewed in Jun 2021. There were 3 interview rounds.
I appeared for an interview before Sep 2020.
Round duration - 90 minutes
Round difficulty - Medium
The test start time validity was between 06:00 PM and 7:00 PM.
It was on the HirePro platform(link provided by company).
The test was proctored which means that we had to keep our Microphone and Web Cam on at all times and never exit the test window.
You are provided with a two-dimensional array named MATRIX
of size N x M, consisting of integers. Your task is to return the elements of the matrix following a spiral order.
Implement a function to return elements of a matrix in spiral order.
Iterate through the matrix in a spiral order by adjusting boundaries as you move along.
Keep track of the direction of movement (right, down, left, up) to traverse the matrix correctly.
Handle edge cases like when the matrix is a single row or column separately.
Convert a given decimal number into its equivalent octal representation.
The octal number system is a base-8 system, meaning each digit ranges ...
Convert decimal numbers to octal representation.
Iterate through each test case and use built-in functions to convert decimal to octal.
Ensure the output is in base-8 system with digits ranging from 0 to 7.
Handle constraints such as number of test cases and range of decimal numbers.
Given a 2D array 'MATRIX' of size M x N, find and return the value (i * i + j * j) for those elements where the sum of the cubes of its digits equals the element itself. H...
Given a 2D array, find elements where sum of cube of digits equals element itself and return (i * i + j * j) value.
Iterate through the 2D array and check if the sum of cube of digits equals the element itself.
Calculate (i * i + j * j) for such elements and return the values.
If no such element exists, return -1.
Round duration - 60 minutes
Round difficulty - Medium
The round was from 11 am to 12 pm, 4 days after the online test.
It was held over a video call on Skype.
We were instructed to use https://slate.skillenza.com/ as the coderpad.
This was a Technical Round.
The interviewer started by asking me to introduce myself. He then asked me some questions regarding Java programming. He asked me what is the use and advantages of HashMaps and how a HashMap is implemented internally in Java. He also asked me some OOPS question. He gave me the following code to solve and ended the session by asking me the details of an Android application I had mentioned on my resume.
Given two 1-dimensional arrays containing strings of lowercase alphabets, determine and return the elements that are common in both arrays, i.e.,...
Given two arrays of strings, find and return the common elements in the order they appear in the second array.
Iterate through the strings in the second array and check if they exist in the first array.
Maintain a set to keep track of common elements to avoid duplicates.
Return the common elements as a single space-separated string in the order they appear in the second array.
Tip 1 : Practice DSA everyday and make sure that you are giving timed mock tests periodically.
Tip 2 : Keep revising your Computer Science fundamentals(OS, DBMS, Software Engineering principles).
Tip 3 : Also brush-up your aptitude skills.
Tip 1 : Customize your resume for a company based on their Job Description (highlight necessary skills)
Tip 2 : Include only those points about which you're fully confident. Sometimes including too much increases expectations and then the bar is set high for you which impacts the assessment
I applied via Campus Placement and was interviewed before May 2020. There was 1 interview round.
A linked list is a linear data structure where each element is a separate object with a pointer to the next element.
In Java, a linked list is implemented using the LinkedList class in the java.util package.
LinkedList class provides methods like add(), remove(), get(), etc. to manipulate the list.
Each element in the list is represented by a node object which contains the data and a reference to the next node.
Linked list...
ACID Properties are a set of properties that ensure database transactions are processed reliably.
ACID stands for Atomicity, Consistency, Isolation, and Durability.
Atomicity ensures that a transaction is treated as a single, indivisible unit of work.
Consistency ensures that a transaction brings the database from one valid state to another.
Isolation ensures that concurrent transactions do not interfere with each other.
Du...
A deadlock is a situation where two or more processes are unable to proceed due to a circular dependency.
Deadlock occurs when two or more processes are waiting for each other to release resources.
To avoid deadlock, use techniques like resource allocation graph, banker's algorithm, and deadlock prevention.
Resource allocation graph is a visual representation of resource allocation and can help identify potential deadlock...
SQL is a relational database while NoSQL is non-relational. MongoDB is preferred for scalability and flexibility.
SQL is table-based while NoSQL is document-based
SQL is structured while NoSQL is unstructured
SQL is vertically scalable while NoSQL is horizontally scalable
MongoDB is preferred for its ability to handle large amounts of unstructured data and its flexibility in schema design
MySQL is preferred for its strong A...
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I applied via Campus Placement and was interviewed in May 2021. There were 4 interview rounds.
Some of the top questions asked at the Societe Generale Global Solution Centre Software Engineer interview for freshers -
The duration of Societe Generale Global Solution Centre Software Engineer interview process can vary, but typically it takes about less than 2 weeks to complete.
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