100+ Ishan Technologies Interview Questions and Answers

I would start by identifying the root cause of the crash and then work on finding a solution to fix it.

• First, I would analyze the crash dump to identify the error message or code that caused the crash.

• Then, I would review the software code to understand the context of the error and identify any potential bugs or issues.

• I would also check for any known issues or bugs that have been reported by other customers.

• Once I have identified the root cause of the crash, I would work on ...read more

Question on breadth first search, longest common subsequence, and output of code written on paper.

• Breadth first search is a graph traversal algorithm that visits all the vertices of a graph in breadth-first order.

• Longest common subsequence is the longest subsequence common to all sequences in a set of sequences.

• Output of code written on paper refers to writing code on paper and then analyzing the output without actually running the code.

Object class is inherited by each subclass separately in multiple levels of inheritance.

• Each subclass inherits the object class of its parent class.

• If a subclass has multiple parent classes, it inherits the object class of each parent class separately.

• Object class is the root class of all classes in Java and provides basic methods and properties.

• Example: Class C extends Class B, which extends Class A. Each class inherits the object class separately.

• Example: Class C extends Cl...read more

Data is driven in automation through input files or databases. Validation is done through assertions and comparing expected vs actual results.

• Data can be driven through input files like CSV, Excel or databases like MySQL, Oracle

• Assertions can be used to validate data accuracy and precision

• Expected vs actual results can be compared to ensure data correctness

• Data can also be validated through manual inspection or using tools like SQL queries

Dynamic memory allocation in C and C++ can be done using malloc, calloc, realloc and new operators.

• malloc() function is used to allocate a block of memory of specified size.

• calloc() function is used to allocate a block of memory and initializes it to zero.

• realloc() function is used to resize the previously allocated memory block.

• new operator is used in C++ to allocate memory for an object.

• Memory allocated using these functions should be freed using free() function in C and de...read more

You can turn on one switch for a few minutes, turn it off and turn on another switch. The remaining switch will be for the third bulb.

• Turn on switch 1 and leave it on for a few minutes

• Turn off switch 1 and turn on switch 2

• Leave switch 2 on for a few minutes

• Turn off switch 2 and turn on switch 3

• The bulb that is off and warm to the touch is connected to switch 1

• The bulb that is on is connected to switch 2

• The bulb that is off and cold to the touch is connected to switch 3

When automation script fails, debug process involves identifying the root cause and fixing it.

• Check the error logs and identify the line of code where the script failed

• Verify the test data and environment setup

• Re-run the script with debug mode enabled to identify the issue

• Fix the issue and re-run the script to ensure it passes

• Update the test case and report the issue to the development team if necessary

Abstract classes are used when we want to provide a default implementation, while interfaces are used when we want to enforce a contract.

• Use abstract classes when you want to provide a default implementation for some methods.

• Use interfaces when you want to enforce a contract that must be implemented by the implementing class.

• Abstract classes can have constructors, while interfaces cannot.

• A class can implement multiple interfaces, but can only inherit from one abstract class.

• A...read more

I approach conflicts by actively listening, identifying the root cause, and finding a mutually beneficial solution.

• Listen to all parties involved and understand their perspectives

• Identify the root cause of the conflict

• Brainstorm potential solutions with all parties involved

• Find a mutually beneficial solution that addresses the root cause

• Communicate the solution clearly and ensure all parties are satisfied

Pointers are variables that store memory addresses. A dangling pointer is a pointer that points to a memory location that has been deallocated.

• Pointers are used to access memory directly

• They can be used to pass values by reference

• Dangling pointers can cause program crashes or unexpected behavior

Cake can be cut into 8 equal pieces by making 3 cuts.

• Make two cuts to divide the cake into quarters, then make a third cut through all quarters to get 8 equal pieces.

• Each cut should be made perpendicular to the previous cut.

• The size of the cake does not matter as long as it is a cylindrical or rectangular shape.

Program to fetch second highest number from array

• Sort the array in descending order

• Return the second element of the sorted array

Inheritance is a mechanism in object-oriented programming where a new class is created from an existing class.

• It allows the new class to inherit the properties and methods of the existing class.

• There are different types of inheritance such as single, multiple, multilevel, and hierarchical.

• Single inheritance involves a child class inheriting from a single parent class.

• Multiple inheritance involves a child class inheriting from multiple parent classes.

• Multilevel inheritance inv...read more

To count 45 minutes with 2 threads, burn the first thread at both ends and the second thread at one end.

• Burn the first thread at both ends, it will last for 15 minutes.

• At the same time, burn the second thread at one end.

• When the first thread is burnt out, light the other end of the second thread.

• The second thread will last for 30 minutes, completing the 45 minutes.

• This is an example of using logic and creativity to solve a problem.

Singleton design pattern ensures only one instance of a class is created and provides a global point of access to it.

• Create a private constructor to prevent direct instantiation of the class

• Create a private static instance of the class

• Create a public static method to access the instance

• Ensure thread safety by using synchronized keyword or static initialization block

• Example: Database connection manager

Array list and hashmap are data structures used for storing and accessing data in memory.

• Array list is a dynamic array that can grow or shrink in size as needed.

• Hashmap is a key-value pair data structure that allows for fast retrieval of values based on their keys.

• Array list is implemented using an array, while hashmap is implemented using a hash table.

• Array list is useful when the data needs to be accessed sequentially, while hashmap is useful when the data needs to be acces...read more

Find the first non-repeating character in a string.

• Iterate through the string and count the frequency of each character.

• Iterate through the string again and return the first character with frequency 1.

• Use a hash table to store the frequency of each character.

MVC filters are used to intercept and modify HTTP requests and responses in ASP.NET MVC applications.

• Filters can be used for authentication, caching, logging, and exception handling.

• Filters can be applied globally or to specific controllers or actions.

• The execution sequence of filters is determined by their type and scope.

• The order of execution can be modified using the Order property.

• Some common filter types include Authorization filters, Action filters, Result filters, and ...read more

Custom string class implementation with C string and explanation of using reference in copy constructor.

• C string can be implemented using char arrays and functions like strcpy, strlen, etc.

• Custom string class can be implemented using dynamic memory allocation and member functions for string manipulation.

• References in copy constructor are used to avoid unnecessary copying of objects, improving performance and memory efficiency.

The age of the individuals cannot be determined based on the given information.

• The product of two vote eligible people does not provide any information about their individual ages.

• Age is not a factor in determining the product of two numbers.

• Additional information about the individuals' ages or their relationship to the product is needed.

Sort map entries based on values

• Use a TreeMap to sort the entries based on values

• Implement a Comparator to compare the values

• Convert the sorted entries to a LinkedHashMap to maintain the order

SOLID design principles are a set of guidelines for writing maintainable and scalable code.

• S - Single Responsibility Principle: A class should have only one reason to change.

• O - Open/Closed Principle: A class should be open for extension but closed for modification.

• L - Liskov Substitution Principle: Subtypes should be substitutable for their base types.

• I - Interface Segregation Principle: Clients should not be forced to depend on interfaces they do not use.

• D - Dependency Inve...read more

Sort a list of alphanumeric values.

• Use a sorting algorithm to sort the array of strings.

• If the values are case-insensitive, convert them to lowercase before sorting.

• If the values contain numbers, use a natural sorting algorithm to sort them.

• If the values contain special characters, consider their ASCII values while sorting.

Implement matrix multiplication and bitwise XOR operation in C++.

• For matrix multiplication, define a Matrix class with overloaded * operator.

• For bitwise XOR operation, use the ^ operator between two integers.

• Ensure the dimensions of matrices are compatible for multiplication.

• Handle edge cases like empty matrices or different dimensions.

• Example: Matrix A(4, 4); Matrix B(4, 4); Matrix C = A * B;

• Example: int result = num1 ^ num2;

Regression testing is retesting of software to ensure that recent changes have not adversely affected existing features. Regression defects are bugs that reappear after changes.

• Regression testing is performed to make sure that new code changes have not introduced any new bugs or caused existing functionalities to break.

• It involves re-executing test cases that cover the impacted areas of the software.

• Regression defects are bugs that were previously fixed but resurface after ne...read more

Validate input by checking for specific error messages instead of success message

• Check for error messages related to incorrect input (e.g. 'Invalid username/password')

• Verify the response code or status returned after login attempt

• Look for any specific patterns in the error messages that indicate incorrect input

malloc and calloc are memory allocation functions in C. malloc allocates memory but does not initialize it, while calloc initializes memory to zero.

• malloc allocates memory block of given size

• calloc allocates memory block of given size and initializes it to zero

• malloc returns a pointer to the allocated memory

• calloc returns a pointer to the allocated memory or NULL if allocation fails

• malloc does not clear the allocated memory

• calloc clears the allocated memory

• malloc is faster th...read more

Use xpath to locate Google Search tab and Voice search button on the webpage.

• For Google Search tab: //input[@name='btnK']

• For Voice search button: //div[@aria-label='Search by voice']

C++ program to reverse a string

• Use a loop to iterate through the string

• Swap the characters at the beginning and end of the string

• Continue swapping until the middle of the string is reached

Unit tests are written to test individual units of code to ensure they function as expected.

• Identify the unit of code to be tested

• Create test cases that cover all possible scenarios

• Use testing frameworks like JUnit or pytest

• Ensure tests are independent and repeatable

• Test for both positive and negative scenarios

• Use mock objects to simulate dependencies

• Run tests frequently during development

• Refactor code based on test results

The main method in Java can be overloaded but not overridden.

• Main method can be overloaded by defining multiple main methods with different parameters.

• Overloading allows multiple methods with the same name but different parameters.

• Main method cannot be overridden because it is a static method and static methods cannot be overridden.

Delete removes specific rows while truncate removes all rows from a table.

• Delete is a DML command while truncate is a DDL command.

• Delete is slower than truncate as it logs each row deletion while truncate does not.

• Delete can be rolled back while truncate cannot be rolled back.

• Delete can be used with a WHERE clause to remove specific rows while truncate removes all rows.

• Delete does not reset the identity of a table while truncate resets the identity of a table.

The shortest distance between 2 points on a 3D cubical surface can be calculated using the Manhattan distance formula.

• Calculate the absolute difference between the x, y, and z coordinates of the two points.

• Sum up the absolute differences to get the Manhattan distance.

• Manhattan distance = |x2 - x1| + |y2 - y1| + |z2 - z1|

• Example: If point A is (1, 2, 3) and point B is (4, 5, 6), the Manhattan distance would be |4-1| + |5-2| + |6-3| = 9.

Regression tests are run after every significant code change or new feature implementation.

• Regression tests are typically run after every significant code change or new feature implementation to ensure that existing functionalities are not affected.

• The frequency of running regression tests may vary depending on the project timeline and release cycle.

• In Agile development, regression tests are often run as part of the continuous integration process, triggered by code commits.

• Au...read more

Some common libraries used for verifying test cases are JUnit, TestNG, Selenium, and RestAssured.

• JUnit is a popular Java testing framework for unit testing.

• TestNG is another Java testing framework that supports parameterized and data-driven testing.

• Selenium is a widely used tool for automating web browsers for testing purposes.

• RestAssured is a Java library for testing RESTful APIs.

Coin change problem involves finding the minimum number of coins needed to make a certain amount of change.

• Involves finding the minimum number of coins needed to make a certain amount of change

• Dynamic programming is commonly used to solve this problem

• Example: If the coins available are [1, 2, 5] and the amount to make is 11, the minimum number of coins needed is 3 (5 + 5 + 1)

Java program to reverse a string without using predefined methods.

• Create a char array from the input string.

• Use two pointers, one at the start and one at the end, to swap characters.

• Continue swapping characters until the pointers meet in the middle.

The length of string wrapped around a cylindrical surface can be calculated using the formula 2πr, where r is the radius of the cylinder.

• The formula to calculate the length of string wrapped around a cylindrical surface is 2πr.

• For example, if the radius of the cylinder is 5 cm, the length of the string wrapped around it would be 2π(5) = 10π cm.

A Python list is implemented as a dynamic array that can resize itself as needed.

• Python lists are implemented as dynamic arrays, allowing for efficient insertion and deletion operations.

• Lists in Python can hold elements of different data types.

• Lists can be accessed using index values, starting from 0.

• Example: my_list = [1, 'hello', True]

Implementing interfaces vs abstract classes in real life

• Interfaces are useful when implementing multiple inheritance in Java

• Abstract classes are useful when creating a base class with some implementation

• Example of interface: implementing Runnable interface in a class to create a thread

• Example of abstract class: creating a base class for different types of vehicles

Reverse a linked list

• Iteratively swap the next and previous pointers of each node

• Recursively swap the next and previous pointers of each node

• Use a stack to push each node and then pop them to create the reversed list

Exception handling in MVC is crucial for error-free application development.

• MVC framework provides a built-in exception handling mechanism.

• Custom exception handling can be implemented using try-catch blocks.

• Global exception handling can be set up in the Global.asax file.

• Logging exceptions can help in debugging and improving application performance.

To select the 5th dropdown option, locate the dropdown element and choose the 5th option.

• Locate the dropdown element using its unique identifier or class name

• Use a method like 'selectByIndex' or 'selectByVisibleText' to choose the 5th option

• Verify that the correct option has been selected

Hashmap is a data structure that stores key-value pairs and provides constant time complexity for insertion, deletion, and retrieval.

• Hashmap uses a hash function to map keys to indices in an array.

• Collisions can occur when two keys map to the same index, which can be resolved using techniques like chaining or open addressing.

• Java provides a built-in implementation of Hashmap in the java.util package.

• Example: HashMap map = new HashMap<>(); map.put("apple", 1); int value = map....read more

To determine if a point lies inside, on or outside a circle, we need to calculate the distance between the point and the center of the circle.

• Calculate the distance between the point and the center of the circle using the distance formula

• If the distance is greater than the radius of the circle, the point is outside the circle

• If the distance is equal to the radius of the circle, the point is on the circle

• If the distance is less than the radius of the circle, the point is insid...read more

An immutable class is a class whose instances cannot be modified after creation.

• Make all fields private and final

• Do not provide any setters

• Make the class final so that it cannot be subclassed

• If any mutable object is used as a field, return a copy of it instead of the original object

Abstract and interface are both used for abstraction in object-oriented programming.

• Abstract classes can have both abstract and non-abstract methods, while interfaces can only have abstract methods.

• Classes can implement multiple interfaces, but can only inherit from one abstract class.

• Abstract classes can have constructors, while interfaces cannot.

• Interfaces are used for defining contracts, while abstract classes are used for defining common behavior.

Prepaid taxes are recorded as an asset on the balance sheet until they are actually paid.

• Prepaid taxes are initially recorded as a debit to the Prepaid Taxes account and a credit to the Cash account.

• When the taxes are actually paid, the entry is a debit to the Taxes Expense account and a credit to the Prepaid Taxes account.

• The balance in the Prepaid Taxes account represents taxes that have been paid in advance but not yet expensed.

Budgeting involves setting a financial plan for a specific period, while forecasting predicts future financial outcomes based on current data and trends.

• Budgeting is a detailed financial plan for a specific period, usually a year, outlining expected revenues and expenses.

• Forecasting involves predicting future financial outcomes based on current data and trends, helping in decision-making and planning.

• Budgeting is more rigid and focuses on achieving specific financial goals, w...read more

To rectify a PC generating broadcast, check for misconfigured network settings, update network drivers, disable unnecessary services, and monitor network traffic.

• Check for misconfigured network settings such as incorrect IP address or subnet mask

• Update network drivers to ensure compatibility and stability

• Disable unnecessary services or applications that may be causing excessive network traffic

• Monitor network traffic using tools like Wireshark to identify the source of the bro...read more

JVM is an abstract machine that executes Java bytecode. It provides a runtime environment for Java programs.

• JVM stands for Java Virtual Machine

• It is responsible for interpreting the compiled Java code into machine code

• JVM has three main components: class loader, runtime data area, and execution engine

• The class loader loads the bytecode into the runtime data area

• The runtime data area is where the JVM stores data and code during program execution

• The execution engine executes th...read more

A runnable is a functional interface that represents a task to be executed, while a thread is a separate path of execution.

• A runnable can be executed by a thread or an executor service

• A thread is a lightweight process that can run concurrently with other threads

• Threads can be used for parallelism, concurrency, and asynchronous programming

• Example: Runnable r = () -> System.out.println("Hello World"); Thread t = new Thread(r); t.start();

C is a procedural language while C++ is an object-oriented language.

• C does not support classes and objects while C++ does.

• C++ supports function overloading while C does not.

• C++ has a built-in exception handling mechanism while C does not.

• C++ supports namespaces while C does not.

• C++ supports references while C does not.

To select a dropdown in Selenium, use the Select class and its methods like selectByVisibleText, selectByValue, or selectByIndex.

• Use the Select class from org.openqa.selenium.support.ui package

• Identify the dropdown element using findElement method

• Create a new Select object by passing the dropdown element as a parameter

• Use selectByVisibleText, selectByValue, or selectByIndex methods to choose an option

The glass will be half full at the 1st second.

• The glass is filled with 1ml at 0sec, then doubled every second (1ml, 2ml, 4ml, 8ml, ...)

• At the 1st second, the glass will be half full because it will contain 1ml + 2ml = 3ml, which is half of its capacity

Libraries are collections of resources, such as books, journals, and databases, that are available for use by the public.

• Libraries provide access to a wide range of information resources, including books, magazines, newspapers, and online databases.

• They are often used for research, studying, and leisure reading.

• Examples of libraries include public libraries, academic libraries, and special libraries such as law libraries or medical libraries.

• I have used libraries for research...read more

Polymorphism is the ability of an object to take on many forms. It has two types: compile-time and runtime polymorphism.

• Compile-time polymorphism is achieved through function overloading and operator overloading.

• Runtime polymorphism is achieved through virtual functions and function overriding.

• Polymorphism allows for code reusability and flexibility in object-oriented programming.

• Example of compile-time polymorphism: function overloading - multiple functions with the same nam...read more

OOPS concepts are fundamental to software engineering. They help in creating modular, reusable, and maintainable code.

• Encapsulation: Hiding implementation details and exposing only necessary information.

• Inheritance: Reusing code and creating a hierarchy of classes.

• Polymorphism: Ability of objects to take on multiple forms.

• Abstraction: Focusing on essential features and ignoring implementation details.

• Example: A car is an object that encapsulates its internal workings. A sport...read more

OOPS pillars are the fundamental principles of Object-Oriented Programming.

• Encapsulation - bundling of data and methods that operate on that data

• Inheritance - ability of a class to inherit properties and characteristics from its parent class

• Polymorphism - ability of objects to take on multiple forms or have multiple behaviors

• Abstraction - hiding of complex implementation details and showing only the necessary information

Bank reconciliation is the process of comparing a company's records with those of the bank to ensure they match.

• Gather bank statements and company records

• Compare deposits, withdrawals, and fees between the two sets of records

• Identify and investigate any discrepancies

• Adjust the company's records to match the bank's records

• Prepare a bank reconciliation statement to document the process

Logic to find duplicate numbers and their count in a given list.

• Iterate through the list and store each number in a hashmap with its count

• If a number is already in the hashmap, increment its count

• After iterating, check the hashmap for numbers with count greater than 1 to find duplicates

findElements method in Selenium returns a list of WebElements or an empty list if no elements are found.

• findElements method returns a list of WebElements

• If no elements are found, it returns an empty list

• Return type is List

Middleware is software that acts as a bridge between different applications or systems, allowing them to communicate and share data.

• Middleware facilitates communication between different software applications

• It can handle tasks such as message queuing, data transformation, and security

• Examples include Apache Kafka, RabbitMQ, and Microsoft BizTalk

Exception handling is a mechanism to handle runtime errors in a program to prevent it from crashing.

• Exceptions are objects that represent errors or unexpected events in a program.

• Try block is used to enclose the code that might throw an exception.

• Catch block is used to handle the exception if it occurs.

• Finally block is used to execute code regardless of whether an exception is thrown or not.

• Throw keyword is used to manually throw an exception.

• Example: try { // code that might...read more

Use array methods like slice or spread operator to copy one array to another without using a loop.

• Use the slice method: let newArray = oldArray.slice()

• Use the spread operator: let newArray = [...oldArray]

• Both methods create a shallow copy of the original array

Singleton pattern ensures only one instance of a class is created and provides a global point of access to it.

• Private constructor to restrict object creation

• Private static instance variable to hold the single instance

• Public static method to get the instance

• Lazy initialization or eager initialization

• Thread-safe implementation using synchronized keyword or static block

• Examples: java.lang.Runtime, java.awt.Desktop, java.util.Calendar

Abstract classes can have both abstract and non-abstract methods, while interfaces can only have abstract methods.

• Abstract classes can have constructors, member variables, and non-abstract methods, while interfaces cannot.

• A class can implement multiple interfaces but can only inherit from one abstract class.

• Abstract classes are used to define a common behavior for subclasses, while interfaces are used to define a contract for classes to implement.

• Example: Abstract class 'Anim...read more

The golden rules of accounting are basic principles that guide the process of recording financial transactions.

• The golden rules include the principles of debit and credit, which are used to record transactions accurately.

• Debit what comes in and credit what goes out is one of the golden rules of accounting.

• Another golden rule is debit the receiver and credit the giver.

• The final golden rule is debit all expenses and losses, credit all incomes and gains.

Order to cash process is the set of business processes involved in receiving and fulfilling customer orders.

• Customer places an order

• Order is processed and approved

• Product is picked, packed, and shipped

• Invoice is generated and sent to customer

• Payment is received and recorded

Abstract class can have both abstract and non-abstract methods, while Interface can only have abstract methods.

• Abstract class can have constructors, fields, and methods, while Interface cannot have any implementation.

• A class can implement multiple interfaces but can only inherit from one abstract class.

• Abstract classes are used to provide a common base for multiple classes, while Interfaces are used to define a contract for classes to implement.

• Example: Abstract class 'Shape'...read more

Implement a Linked List using a stack data structure

• Create a stack to store the elements of the linked list

• Push new elements onto the stack when adding to the linked list

• Pop elements from the stack when removing from the linked list

Oops concept stands for Object-Oriented Programming. It is a programming paradigm based on the concept of objects.

• Oops concept involves the use of classes and objects

• It emphasizes on encapsulation, inheritance, polymorphism, and abstraction

• Encapsulation is the bundling of data with the methods that operate on that data

• Inheritance allows a class to inherit properties and behavior from another class

• Polymorphism allows objects to be treated as instances of their parent class

• Abst...read more

Constructors are called in order of inheritance, while destructors are called in reverse order.

• Constructors are called when an object is created.

• Destructors are called when an object is destroyed.

• Inheritance affects the order of constructor calls.

• Destructors are called in reverse order of constructors.

32-bit OS can only address up to 4GB of RAM, while 64-bit OS can address much more.

• 32-bit OS can only address up to 4GB of RAM, while 64-bit OS can address much more

• 64-bit OS allows for larger file sizes and better performance

• 64-bit OS is more secure due to enhanced security features

• 64-bit OS is required to run certain modern software and games

Program to find the highest value in an array of strings.

• Iterate through the array and compare each element to find the highest value.

• Use a variable to keep track of the highest value found so far.

• Return the highest value at the end of the iteration.

findelement is used to find a single element on a webpage, while findelements is used to find multiple elements.

• findelement returns the first matching element on the webpage

• findelements returns a list of all matching elements on the webpage

• Example: driver.findElement(By.id("elementId")) vs driver.findElements(By.className("elementClass"))

Object-oriented programming concepts used in framework design

• Inheritance: Allows classes to inherit attributes and methods from other classes

• Encapsulation: Bundling data and methods that operate on the data into a single unit

• Polymorphism: Ability to present the same interface for different data types

• Abstraction: Hiding the complex implementation details and showing only the necessary features

A real account refers to assets, liabilities, and equity accounts on a company's balance sheet.

• Real accounts are permanent accounts that are not closed at the end of an accounting period.

• They include assets like cash, accounts receivable, inventory, property, plant, and equipment, as well as liabilities and equity.

• Changes in real accounts are recorded on the balance sheet and do not affect the income statement.

• Examples of real accounts include cash, accounts payable, and comm...read more

Verification ensures the product is built right, while validation ensures the right product is built.

• Verification focuses on process, validation focuses on product

• Verification answers 'Are we building the product right?'

• Validation answers 'Are we building the right product?'

• Verification is done before validation

Reverse the array of strings

• Iterate through the array from the end to the beginning

• Store each element in a new array in reverse order

• Return the new array as the reversed version of the original array

Linked list is a data structure where each element points to the next element in the sequence.

• Nodes contain data and a reference to the next node

• Insertion and deletion can be done efficiently

• Traversal starts from the head node

Projection of one vector onto another is a way to find the component of one vector in the direction of another vector.

• To project vector A onto vector B, you can use the formula: projB(A) = (A dot B / ||B||^2) * B

• The dot product of two vectors is calculated by multiplying their corresponding components and adding the results.

• The magnitude of a vector can be found using the formula: ||V|| = sqrt(Vx^2 + Vy^2)

• Example: If vector A = [3, 4] and vector B = [1, 2], the projection of ...read more

Dassault Systemes is a global leader in 3D design software, 3D Digital Mock Up and Product Lifecycle Management solutions.

• Dassault Systemes offers cutting-edge technology and innovative solutions for software development.

• They have a strong reputation in the industry for providing high-quality products and services.

• Working at Dassault Systemes provides opportunities for professional growth and development.

• Their focus on research and development ensures that employees are worki...read more

Sort array without using method

• Iterate through the array and compare each element with the next one

• Swap elements if they are in the wrong order

• Repeat the process until the array is fully sorted

OOPs concepts refer to Object-Oriented Programming principles like Inheritance, Encapsulation, Polymorphism, and Abstraction.

• Inheritance: Allows a class to inherit properties and behavior from another class.

• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Polymorphism: Ability to present the same interface for different data types.

• Abstraction: Hiding the complex implementation details and showing only the necessary features.

Sort map entries based on value

• Use a TreeMap to sort the entries based on value

• Implement a Comparator to compare the values

• Convert the TreeMap to a LinkedHashMap to maintain the order of insertion

To center a div, use CSS properties like margin, display, and text-align.

• Set margin to auto on left and right sides

• Set display to flex and justify-content to center

• Set text-align to center for inline elements

Remote work preferred, open to occasional travel

• Remote work preferred

• Open to occasional travel

• Flexible with location

Ant travels along the edges of a cube.

• The ant can travel along any of the 12 edges of the cube.

• The ant can start at any vertex of the cube.

• The ant can visit each vertex of the cube exactly once.

• The ant can travel in any direction along the edges of the cube.

• The ant can end its journey at any vertex of the cube.

Oops concepts refer to Object-Oriented Programming principles such as Inheritance, Encapsulation, Polymorphism, and Abstraction.

• Inheritance: Allows a class to inherit properties and behavior from another class.

• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Polymorphism: Ability to present the same interface for different data types.

• Abstraction: Hiding the complex implementation details and showing only the necessary features.

Implementation class for ArrayList in Java

• Create a class named ArrayList with a private array to store elements

• Implement methods like add, remove, get, size, etc.

• Handle resizing of the array when needed

• Use generics to allow storing any type of objects

• Here is a simple example: public class ArrayList { private Object[] array; ... }

Types of network cables include Ethernet, coaxial, fiber optic, and twisted pair cables.

• Ethernet cables are commonly used for wired networks and come in categories like Cat5, Cat6, and Cat7.

• Coaxial cables are often used for cable television and internet connections.

• Fiber optic cables use light to transmit data and are known for their high speed and reliability.

• Twisted pair cables, such as Cat5e and Cat6, are commonly used for Ethernet connections in homes and businesses.

Reverse a given string

• Use a loop to iterate through the characters of the string

• Append each character to a new string in reverse order

• Return the reversed string

Program to increase the version of a file

• Read the current version of the file

• Increment the version number

• Write the updated version back to the file