100+ Maharani Wedding Collection Interview Questions and Answers

The task is to find the Nth Fibonacci number using matrix exponentiation.

• Use matrix exponentiation to efficiently calculate the Nth Fibonacci number

• Return the answer modulo 10^9 + 7 to handle large numbers

• Implement the function to solve the problem

• The Fibonacci sequence starts with 1, 1, so F(1) = F(2) = 1

• The time complexity can be improved to better than O(N) using matrix exponentiation

The task is to sort the elements of ARR in such a way that the relative order among the elements will be the same as those are in BRR. For the elements not present in BRR, append them in the last in sorted order.

• Create a frequency map of elements in ARR

• Iterate through BRR and for each element, append it to the result array the number of times it appears in ARR

• Iterate through the frequency map and for each element not present in BRR, append it to the result array

• Sort the resul...read more

The task is to remove duplicates from a sorted integer array in-place and return the length of the modified array.

• Use two pointers, one for iterating through the array and another for keeping track of the unique elements.

• Compare the current element with the next element. If they are the same, move the second pointer forward.

• If they are different, update the first pointer and replace the element at the first pointer with the unique element.

• Continue this process until the end o...read more

Interview questions for Applications Engineer including coding problems, DBMS vs RDBMS, call by reference vs call by variable, Java exceptions, and JSON.

• Coding problems test problem-solving skills and coding ability.

• DBMS is a general term for managing databases, while RDBMS is a specific type that uses a relational model.

• Call by reference passes a reference to a variable, while call by variable passes a copy of the variable.

• Java exceptions are errors that occur during program...read more

Primary key uniquely identifies a record in a table. Candidate key is a unique key that can be chosen as the primary key. Foreign key establishes a link between two tables.

• Primary key ensures uniqueness and is used to identify records in a table.

• Candidate key is a unique key that can be chosen as the primary key.

• Foreign key establishes a relationship between two tables based on the values of the primary key in one table and the corresponding values in another table.

To compile all Java files inside a folder using Cmd, navigate to the folder and run 'javac *.java'

• Open Command Prompt and navigate to the folder containing the Java files

• Run the command 'javac *.java' to compile all Java files in the folder

• Check for any errors or warnings in the output

equal is a keyword used for assignment, equals is a method used for comparing objects.

• equal is used for assigning a value to a variable

• equals is used for comparing objects for equality

• Example: int x = 5; String s1 = "hello"; String s2 = new String("hello"); s1.equals(s2) returns true

Query to find 2nd highest salary from a table

• Use ORDER BY and LIMIT

• Exclude the highest salary using subquery

• Handle cases where there are ties

Create a C++ class with implementation

• Create a class named 'Person' with private data members like name, age, and gender

• Include public member functions to set and get the data members

• Implement the class in a separate header and source file

Psychometric tests are used to measure mental capabilities and behavior for assessing suitability for a role.

• Psychometric tests measure mental capabilities and behavior

• They assess suitability for a particular role

• They check personality characteristics and aptitude/cognitive ability

Interview questions for Software Developer on triggers, method overloading/overriding, sorting, prime numbers, final/finally keyword, and normalization.

• Triggers are database objects that are automatically executed in response to certain events.

• Method overloading is having multiple methods with the same name but different parameters, while method overriding is having a subclass method with the same name and parameters as a superclass method.

• Sorting five numbers in ascending or...read more

Python has various datatypes including int, float, str, list, tuple, dict, set, bool.

• int: whole numbers (e.g. 5)

• float: decimal numbers (e.g. 3.14)

• str: text (e.g. 'hello')

• list: ordered collection (e.g. [1, 2, 3])

• tuple: ordered, immutable collection (e.g. (1, 2, 3))

• dict: key-value pairs (e.g. {'key': 'value'})

• set: unordered collection of unique elements (e.g. {1, 2, 3})

• bool: True or False values

Database design is crucial for efficient data management. SQL queries help retrieve and manipulate data.

• Understand the data requirements and relationships before designing the database schema

• Normalize the data to reduce redundancy and improve data integrity

• Use primary and foreign keys to establish relationships between tables

• Write efficient SQL queries to retrieve and manipulate data

• Optimize the database performance by indexing frequently queried columns

I have experience with various technologies including Java, Python, HTML/CSS, JavaScript, and SQL.

• Java

• Python

• HTML/CSS

• JavaScript

• SQL

Hashmap is a data structure that stores key-value pairs. Concurrent Hashmap is a thread-safe version of Hashmap.

• Hashmap uses hashing to store and retrieve elements based on their keys.

• Concurrent Hashmap allows multiple threads to access and modify the map concurrently.

• Hashmap has a load factor that determines when the map needs to be resized.

• Concurrent Hashmap uses a technique called lock striping to allow concurrent access to different parts of the map.

• Hashmap is not thread-...read more

Prevent rerendering of a child component in React

• Use shouldComponentUpdate() lifecycle method

• Use React.memo() to memoize functional components

• Use PureComponent instead of Component

• Pass props as a callback function to avoid unnecessary re-renders

• Use React.PureComponent for class components

• Use React.memo() for functional components

Concatenate two linked lists alternatively

• Create a new linked list

• Traverse both linked lists simultaneously

• Alternate between adding nodes from each list to the new list

• If one list is longer than the other, add the remaining nodes to the end of the new list

Oops concepts are fundamental to object-oriented programming. They help in creating modular and reusable code.

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

• Inheritance - creating new classes from existing ones

• Polymorphism - ability of objects to take on many forms

• Abstraction - hiding implementation details and showing only functionality

• Examples - Car class inheriting from Vehicle class, Animal class having different methods for different species

• Need - ...read more

A set is a collection of unique elements with no specific order, while a frozen set is an immutable set that cannot be changed.

• A set does not allow duplicate elements

• A frozen set is created using the frozenset() function

• Sets are mutable and can be modified, while frozen sets are immutable

• Example: set1 = {1, 2, 3} ; frozenset1 = frozenset(set1)

A hyperlink in HTML is a clickable text or image that redirects the user to another webpage or resource.

• Hyperlinks are created using the tag in HTML.

• The 'href' attribute in the tag specifies the URL of the page the link goes to.

• Example: Click here

CSS stands for Cascading Style Sheets and is used to style the appearance of web pages.

• CSS is used to control the layout, colors, fonts, and other visual aspects of a website.

• It allows for separation of content from design, making it easier to update and maintain websites.

• Selectors are used to target specific HTML elements and apply styles to them.

• CSS can be applied inline, embedded within HTML, or linked externally to multiple web pages.

• Example:

It depends on the height of the top and the height of each jump.

• The number of jumps required to reach the top depends on the height of the top and the height of each jump.

• If the height of the top is 10 feet and the height of each jump is 2 feet, then it would take 5 jumps to reach the top.

• If the height of the top is 20 feet and the height of each jump is 3 feet, then it would take 7 jumps to reach the top.

To improve performance in an application, identify performance problems and join our team.

• Analyze application code and identify bottlenecks

• Use profiling tools to measure performance

• Optimize database queries and improve indexing

• Implement caching mechanisms

• Upgrade hardware or infrastructure if necessary

• Join our team to collaborate on performance improvements

Yes, I am willing to travel to customer site on a daily basis.

• I understand that traveling to customer sites is a crucial part of the job.

• I am willing to make the necessary arrangements to ensure that I can travel to customer sites as needed.

• I have experience traveling to customer sites in my previous roles.

• I am comfortable working remotely and communicating with team members and customers via phone and email when necessary.

I am seeking a competitive salary that reflects my skills and experience in digital marketing.

• I want a salary that is competitive within the industry

• I am looking for a salary that reflects my skills and experience in digital marketing

• I am open to negotiation based on the responsibilities of the role

Deadlock is a situation where two or more processes are unable to proceed because each is waiting for the other to release a resource.

• Deadlock occurs when two or more processes are stuck in a circular wait, where each process is waiting for a resource held by another process.

• Four necessary conditions for deadlock are mutual exclusion, hold and wait, no preemption, and circular wait.

• Example: Process A holds resource X and requests resource Y, while Process B holds resource Y a...read more

System architecture for higher experience involves scalable and efficient design.

• Focus on scalability to handle increasing user load

• Use microservices architecture for flexibility and easy maintenance

• Implement caching mechanisms for faster response times

• Utilize load balancing to distribute traffic evenly across servers

I have written over 100 pages of FSD in my previous role.

• I have experience in writing FSD for various projects

• My FSDs are detailed and cover all aspects of the project

• I have received positive feedback from stakeholders on my FSDs

• Examples: FSD for a banking application, FSD for a healthcare management system

Reverse a given string

• Use a loop to iterate through the characters of the string and build a new string in reverse order

• Alternatively, use built-in functions like reverse() in some programming languages

• Consider edge cases like empty string or null input

Stream and collection api usage involves manipulating data using streams and collections in Java.

• Stream API provides a way to process collections of objects in a functional way.

• Collection API provides data structures to store and manipulate groups of objects.

• Stream API can be used to filter, map, reduce, and collect data from collections.

• Collection API includes interfaces like List, Set, and Map for different data structures.

Reading error logs involves identifying the error message, understanding its context, and tracing its source.

• Identify the error message and its severity level

• Understand the context of the error, such as the user actions or system state that triggered it

• Trace the source of the error by examining the stack trace or related logs

• Use debugging tools and techniques to isolate and reproduce the error

• Document the error and its resolution for future reference

Static keyword in Java is used to create class-level variables and methods.

• Static variables are shared among all instances of a class

• Static methods can be called without creating an instance of the class

• Static blocks are used to initialize static variables

• Static import is used to import static members of a class

React lifecycle, Fragment vs React.Fragment, React.PureComponent

• React lifecycle consists of mounting, updating, and unmounting phases

• Fragment is a shorthand for React.Fragment, used to group multiple elements

• React.PureComponent is a class component that implements shouldComponentUpdate method for performance optimization

JavaScript hoisting and differences between let, var and const.

• Hoisting is a JavaScript mechanism where variables and function declarations are moved to the top of their scope.

• Var declarations are hoisted to the top of their scope, while let and const declarations are not.

• Var can be redeclared and reassigned, let can be reassigned but not redeclared, and const cannot be reassigned or redeclared.

• Using const is recommended for variables that should not be reassigned, while let ...read more

React is a JavaScript library for building user interfaces.

• React is a declarative and efficient library for creating UI components.

• It allows developers to build reusable UI components that update efficiently.

• React uses a virtual DOM to efficiently update only the necessary parts of the UI.

• React supports the use of different classes to define components.

• There are two types of classes in React: functional components and class components.

• Functional components are simple function...read more

OOPS stands for Object-Oriented Programming. It is a programming paradigm based on the concept of objects, which can contain data and code.

• OOPS focuses on creating objects that interact with each other to solve a problem.

• It involves concepts like classes, objects, inheritance, polymorphism, and encapsulation.

• Example: In a banking application, a 'Customer' class can have attributes like name and account balance, and methods like deposit and withdraw.

I have gained hands-on experience with MySQL, MongoDB, and PostgreSQL databases.

• MySQL

• MongoDB

• PostgreSQL

SQL query to find third highest salary from employee table.

• Use the ORDER BY clause to sort the salaries in descending order

• Use the LIMIT clause to limit the result to the third row

• Use a subquery to exclude the highest and second highest salaries

Check if a given input string is a palindrome or not

• Compare the input string with its reverse to check for palindrome

• Ignore spaces and punctuation marks when checking for palindrome

• Examples: 'racecar' is a palindrome, 'hello' is not a palindrome

This program counts the occurrence of each letter in a given string.

• Use a HashMap to store the count of each letter.

• Iterate through the characters of the string and update the count in the HashMap.

• Finally, print the count of each letter.

Count the number of words in a sentence

• Split the sentence by spaces to get an array of words

• Count the number of elements in the array to get the number of words

• Consider handling punctuation marks and special characters separately

The default size of an ArrayList is 10.

• The default initial capacity of an ArrayList is 10.

• If the number of elements exceeds the initial capacity, the ArrayList automatically increases its size.

• The capacity of an ArrayList can be increased manually using the ensureCapacity() method.

BPM stands for Business Process Management and DMS stands for Document Management System.

• BPM is a software solution that helps organizations to manage and optimize their business processes.

• DMS is a software solution that helps organizations to manage and store electronic documents.

• BPM and DMS applications are often used together to streamline business processes and improve document management.

• Examples of BPM and DMS applications include IBM BPM, Appian, and SharePoint.

Use Stream API to find the second largest salary in an array of salaries.

• Use Stream.sorted() to sort the salaries in descending order

• Use Stream.skip(1).findFirst() to get the second highest salary

A Singleton Class is a class that can only have one instance and provides a global point of access to it.

• Singleton Class restricts the instantiation of a class to a single object.

• It is used when only one instance of a class is required throughout the system.

• It provides a global point of access to the instance.

• It is implemented by making the constructor private and providing a static method to access the instance.

• Examples include Logger, Configuration Manager, and Database Con...read more

Yes, I have worked on RFPs in my previous roles.

• I have experience in creating and responding to RFPs.

• I have worked on RFPs for various industries including technology and finance.

• I am familiar with the process of gathering information, writing proposals, and submitting bids.

• I have also collaborated with cross-functional teams to ensure timely and accurate completion of RFPs.

Components in React are reusable building blocks that encapsulate the UI and its logic.

• Components are the building blocks of a React application

• They encapsulate the UI and its logic

• Components can be reused throughout the application

• They can be functional components or class components

• Components can have their own state and lifecycle methods

• Examples of components in React are buttons, forms, and navigation bars

Managing stakeholders involves identifying their needs, communicating effectively, and building relationships.

• Identify stakeholders and their needs

• Communicate regularly and effectively

• Build relationships and trust

• Manage conflicts and expectations

• Involve stakeholders in decision-making

• Provide regular updates and feedback

• Adapt to changing stakeholder needs

Motivating people in a sales team is crucial for success. It can be done through recognition, incentives, training, and creating a positive work environment.

• Recognize and reward achievements to boost morale

• Offer incentives such as bonuses or commissions for meeting targets

• Provide ongoing training and development opportunities to enhance skills

• Create a positive work environment with open communication and teamwork

• Set clear goals and provide regular feedback to track progress

• En...read more

Credit process of banks involves assessing the creditworthiness of borrowers using financial ratios.

• Credit process involves analyzing financial statements of borrowers

• Financial ratios like debt-to-equity ratio, current ratio, and debt service coverage ratio are used to assess creditworthiness

• Banks use credit scoring models to evaluate credit risk

• Credit process also involves collateral evaluation and loan documentation

• Credit process is important for managing credit risk and en...read more

Joins are used in SQL to combine data from two or more tables based on a related column.

• Types of joins include inner join, left join, right join, and full outer join.

• Inner join returns only the matching rows from both tables.

• Left join returns all rows from the left table and matching rows from the right table.

• Right join returns all rows from the right table and matching rows from the left table.

• Full outer join returns all rows from both tables, with NULL values for non-matchi...read more

Insert a node in the middle of a linked list

• Find the middle node using slow and fast pointers

• Insert the new node after the middle node

• Update the pointers to maintain the linked list structure

The mortgage lending process involves several steps from application to closing.

• 1. Application: Borrower submits application with financial information.

• 2. Pre-approval: Lender evaluates borrower's creditworthiness and pre-approves the loan.

• 3. Property appraisal: Lender assesses the value of the property being purchased.

• 4. Underwriting: Lender reviews all documentation and makes a final decision on the loan.

• 5. Approval: Loan is approved and terms are finalized.

• 6. Closing: Borr...read more

The standard dpi of scan images varies depending on the purpose and quality required.

• DPI stands for dots per inch, which refers to the resolution of an image.

• The standard dpi for scanning documents is typically 300 dpi.

• For high-quality prints or professional graphics, 600 dpi or higher may be used.

• Web images are often saved at 72 dpi for faster loading on screens.

• Medical imaging may require higher dpi depending on the specific application.

Documents are required to provide a record of decisions, requirements, and agreements made throughout a project.

• Documents serve as a reference point for stakeholders to understand project scope and objectives.

• They help in documenting requirements, specifications, and design decisions.

• Documents provide a record of agreements made between stakeholders.

• They serve as a basis for future audits or reviews of the project.

• Documents help in ensuring consistency and clarity in communic...read more

Singleton class 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 get the instance of the class

• Ensure thread safety by using synchronized keyword or static initialization

• Example: Database connection manager

Cloud refers to the delivery of computing services over the internet.

• Cloud computing allows users to access data and applications from anywhere with an internet connection.

• It involves storing and processing data on remote servers instead of on a local computer or server.

• Cloud services can include infrastructure, platform, and software as a service (IaaS, PaaS, SaaS).

• Examples of cloud services include Amazon Web Services, Microsoft Azure, and Google Cloud Platform.

Count the frequency of each character in a given string.

• Create an array to store the frequency of each character.

• Iterate through the string and update the count of each character in the array.

• Print or return the frequency of each character.

Servlet life cycle refers to the sequence of events that occur during the lifespan of a servlet.

• Servlet is loaded into memory when the server starts

• init() method is called to initialize the servlet

• service() method is called to handle client requests

• destroy() method is called when the servlet is removed from memory

• Servlet can be reloaded if the server is restarted

DPI stands for dots per inch and refers to the resolution of a scanned image.

• DPI determines the level of detail and clarity in a scanned image.

• Higher DPI results in a higher quality image with more detail.

• Common DPI settings for scanning are 300, 600, and 1200.

• DPI is important for printing or enlarging scanned images.

• Lower DPI can be used for web or screen display where less detail is required.

Try with resources is a feature introduced in Java 7 to automatically close resources after use.

• It simplifies the code by eliminating the need for a finally block to close the resource

• The resource must implement the AutoCloseable interface

• Multiple resources can be declared in a single try-with-resources statement

• Example: try(FileInputStream fis = new FileInputStream("file.txt")) { //code }

Hashmap is a data structure that stores key-value pairs and uses hashing to retrieve values quickly.

• Hashmap uses an array to store the key-value pairs

• The keys are hashed to generate an index in the array

• If two keys hash to the same index, a linked list is used to store the values

• Retrieving a value involves hashing the key to find the index and then traversing the linked list if necessary

Constructors are special methods in a class that are used to initialize objects.

• Constructors have the same name as the class they belong to.

• They are called automatically when an object is created.

• Constructors can have parameters to initialize object properties.

• Example: public class Person { public Person(String name) { this.name = name; }}

A network is a group of interconnected devices that can communicate and share resources. There are two types of networks: LAN and WAN.

• A LAN (Local Area Network) is a network that covers a small area, such as a home, office, or building.

• A WAN (Wide Area Network) is a network that covers a large geographical area, such as a city, country, or even the world.

• Other types of networks include WLAN (Wireless Local Area Network), MAN (Metropolitan Area Network), and CAN (Campus Area N...read more

Reverse a linked list

• Iterate through the linked list and change the direction of pointers

• Use three pointers to keep track of current, previous, and next nodes

• Update the head of the linked list to point to the last node

final, finally, and finalize are three different concepts in Java.

• final is a keyword used to declare a constant value that cannot be changed

• finally is a block of code that is executed after a try-catch block, regardless of whether an exception is thrown or not

• finalize is a method that is called by the garbage collector before an object is destroyed

• final can be used with variables, methods, and classes

• finally is used to release resources or perform cleanup operations

• finalize i...read more

React components can have states and props to manage data and communication between components.

• States are used to manage data that can change over time within a component.

• Props are used to pass data from parent components to child components.

• States are mutable and can be changed using setState() method.

• Props are read-only and cannot be changed by the child component.

• Example: where 'name' is a prop passed to MyComponent.

Array is a fixed-size data structure while ArrayList is a dynamic-size data structure in Java.

• Array has a fixed length, while ArrayList can grow dynamically.

• Array can store both primitive types and objects, while ArrayList can only store objects.

• Array uses square brackets [] for declaration, while ArrayList uses angle brackets <>.

• Array provides direct access to elements using index, while ArrayList provides methods for accessing and manipulating elements.

• Example: String[] nam...read more

Find the second largest element in an array

• Sort the array in descending order and return the element at index 1

• Iterate through the array and keep track of the largest and second largest elements

• Use a priority queue to find the second largest element

Software testing methodology refers to the process of verifying and validating software applications.

• It involves planning, designing, executing and reporting tests

• Common methodologies include Waterfall, Agile, and DevOps

• Testing can be manual or automated

• Testing can be functional or non-functional

• Testing can be black box or white box

Context in React is a way to pass data through the component tree without having to pass props down manually at every level.

• Context provides a way to share values like themes, locale preferences, etc. across the component tree.

• It helps in avoiding prop drilling, where props are passed down multiple levels of components.

• Context consists of two parts: Provider and Consumer. Provider allows components to subscribe to context changes, while Consumer allows components to read cont...read more

Redux is a predictable state container for JavaScript apps, commonly used with React for managing application state.

• Redux is a state management library for JavaScript applications.

• It helps in managing the state of the application in a predictable way.

• Redux stores the entire state of the application in a single immutable state tree.

• Actions are dispatched to update the state, and reducers specify how the state changes in response to actions.

• Redux is commonly used with React to ...read more

A personal loan is a type of unsecured loan that is typically used for personal expenses such as home renovations, weddings, or debt consolidation.

• Personal loans are unsecured, meaning they do not require collateral

• They are typically used for personal expenses such as home renovations, weddings, or debt consolidation

• Interest rates on personal loans can vary based on the borrower's credit score and financial history

Account opening is the process of creating a new account with a financial institution or service provider.

• Account opening involves providing personal information, identification documents, and agreeing to terms and conditions.

• It is typically done when opening a bank account, credit card account, investment account, or online account.

• The process may vary depending on the type of account and institution, but generally involves filling out forms and verifying identity.

• Account op...read more

Newgen is a global provider of business process management (BPM), enterprise content management (ECM), and customer communication management (CCM) solutions.

• Newgen offers software solutions to help organizations automate and manage their business processes efficiently.

• Their BPM software helps streamline workflows and improve operational efficiency.

• Their ECM software helps organizations manage and store documents and content in a centralized repository.

• Newgen's CCM software en...read more

OOPs concepts are fundamental principles of object-oriented programming that help in designing and implementing software solutions.

• Encapsulation: Bundling data and methods together in a class.

• Inheritance: Creating new classes by inheriting properties and behaviors from existing classes.

• Polymorphism: Ability of an object to take on many forms.

• Abstraction: Hiding complex implementation details and providing a simplified interface.

• Encapsulation, inheritance, and polymorphism tog...read more