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ProGuard is a tool for code shrinking, obfuscation, and optimization in Android applications.
Reduces APK size by removing unused code and resources.
Obfuscates code to make reverse engineering difficult.
Optimizes bytecode for better performance.
Can be configured using a proguard-rules.pro file.
Example: -keep class com.example.MyClass { *; } to keep a specific class.
A comprehensive SEO strategy enhances visibility, drives traffic, and boosts conversions for businesses online.
Conduct thorough keyword research to identify relevant terms (e.g., using tools like Google Keyword Planner).
Optimize on-page elements such as title tags, meta descriptions, and header tags to improve search engine rankings.
Create high-quality, engaging content that addresses user intent and incorporates ...
I am a passionate digital marketing specialist with a strong background in SEO, content creation, and social media strategy.
Over 5 years of experience in digital marketing, focusing on SEO and content strategy.
Successfully increased organic traffic by 40% for a major e-commerce client through targeted SEO efforts.
Skilled in using analytics tools like Google Analytics and SEMrush to track performance and optimize c...
Tailwind CSS is a utility-first CSS framework that enables rapid UI development with a focus on customization and responsiveness.
Utility-First Approach: Tailwind CSS provides low-level utility classes (e.g., 'bg-blue-500', 'text-center') that can be combined to create custom designs without leaving your HTML.
Customization: It allows extensive customization through a configuration file, enabling developers to defin...
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Bootstrap is a front-end framework that simplifies web development with responsive design, components, and utilities.
Responsive Grid System: Bootstrap provides a flexible grid system that allows developers to create responsive layouts that adapt to different screen sizes.
Predefined Components: It includes a variety of reusable components like buttons, modals, and navigation bars, which speed up development.
Customi...
Angular Material is a UI component library for Angular that provides pre-built, customizable components following Material Design principles.
Pre-built Components: Angular Material offers a wide range of UI components like buttons, cards, and dialogs that adhere to Material Design guidelines.
Responsive Layouts: It includes layout components such as grids and flex layouts, enabling developers to create responsive ap...
In React, managing state and props is crucial for building dynamic applications.
Use state to manage local component data, e.g., const [count, setCount] = useState(0);
Props allow data to be passed from parent to child components, e.g., <ChildComponent name='John' />.
Use useEffect for side effects, like fetching data on component mount.
Consider using context or state management libraries (e.g., Redux) for glob...
Both forEach and map are array methods in JavaScript, but they serve different purposes and return different results.
forEach executes a provided function once for each array element, but does not return a new array.
map creates a new array populated with the results of calling a provided function on every element in the calling array.
Example of forEach: [1, 2, 3].forEach(num => console.log(num)); // Logs 1, 2, 3
...
A .jks file is a Java KeyStore file used to store cryptographic keys and certificates for Android applications.
The .jks file contains private keys, public keys, and certificates.
It is used for signing Android applications before distribution.
Example: A developer creates a .jks file to sign their app for release on the Google Play Store.
The .jks file ensures the authenticity and integrity of the app.
useMemo caches computed values, while useCallback caches functions to prevent unnecessary re-renders in React.
useMemo is used to memoize a computed value, while useCallback is used to memoize a function.
useMemo: const memoizedValue = useMemo(() => computeExpensiveValue(a, b), [a, b]);
useCallback: const memoizedCallback = useCallback(() => { doSomething(a, b); }, [a, b]);
useMemo returns a value, whereas useCa...
I applied via LinkedIn and was interviewed in Mar 2021. There was 1 interview round.
No, this keyword cannot be used inside a static method.
The 'this' keyword refers to the current instance of the class, but static methods do not have an instance.
Static methods can only access static variables and methods.
To access non-static variables or methods, an object of the class must be created first.
CTE stands for Common Table Expression, a temporary named result set that can be referenced within a SELECT, INSERT, UPDATE, or DELETE statement.
CTE is defined using the WITH keyword.
It can be used to simplify complex queries.
It can also improve query performance.
CTE can be recursive, allowing a query to reference itself.
Example: WITH sales AS (SELECT * FROM sales_data) SELECT * FROM sales WHERE amount > 1000;
Partialviews are reusable views in MVC that can be embedded in other views.
Partialviews help in reducing code duplication and improving maintainability.
They can be used to display common UI elements like headers, footers, etc.
Partialviews can also be used to render complex UI components like forms, tables, etc.
They can be passed data from the parent view using a model or ViewData.
Partialviews are rendered using the Htm...
TempData is a dictionary object used to store data temporarily between controller actions.
TempData is used to pass data between controller actions.
It is used to store data temporarily until the next request is made.
TempData is useful when redirecting to another action and you need to pass data along.
It can be used to display success or error messages to the user.
I appeared for an interview in Jan 2025.
A Countdown Timer app built with React to track time remaining for a specified duration.
Use React's useState to manage timer state.
Implement useEffect to handle countdown logic.
Provide input for users to set the countdown duration.
Display the remaining time in a user-friendly format.
Add start, pause, and reset functionality.
Polymorphism allows objects of different classes to be treated as objects of a common superclass. Generators produce items one at a time. Decorators add functionality to existing functions or methods.
Polymorphism: Enables objects of different classes to be treated as objects of a common superclass. Example: Animal superclass with Dog and Cat subclasses.
Generator: Produces items one at a time, allowing for efficient mem...
Embeddings are a way to represent words or phrases as vectors in a high-dimensional space, capturing semantic relationships.
Embeddings are important for tasks like natural language processing, where words need to be represented in a meaningful way.
They can be created using techniques like Word2Vec, GloVe, or using neural networks like Word Embeddings.
Embeddings help in capturing semantic relationships between words, al...
I applied via Approached by Company and was interviewed in Nov 2024. There were 2 interview rounds.
Different types of interfaces include user interfaces, hardware interfaces, and software interfaces.
User interfaces: allow users to interact with the system, such as graphical user interfaces (GUI) and command-line interfaces (CLI)
Hardware interfaces: connect hardware components to the system, such as USB, HDMI, and Ethernet ports
Software interfaces: define how software components interact with each other, such as appl...
The output of the program when 0 is divided by 7 is 0.
Division of 0 by any number results in 0.
In programming languages, dividing by 0 usually results in an error or undefined behavior.
Coroutines, scope functions, and visibility modifiers are key concepts in Kotlin programming for Android development.
Coroutines are a way to perform asynchronous programming in a sequential manner. They allow for non-blocking operations.
Scope functions are functions that allow you to execute a block of code within the context of an object. Examples include 'let', 'apply', 'run', 'also', and 'with'.
Visibility modifiers ...
MVVM is an architectural pattern that separates the user interface from the business logic and data handling in Android development.
Model represents the data and business logic of the application.
View is responsible for displaying the UI elements and sending user interactions to the ViewModel.
ViewModel acts as a mediator between the Model and the View, handling the communication and data flow.
MVVM helps in achieving se...
Using dependency injection in Android development can improve code maintainability and testability.
Pros: easier to manage dependencies, promotes code reusability, facilitates unit testing
Cons: initial setup can be complex, may introduce overhead in smaller projects
Example: Using Dagger 2 for dependency injection in an Android project
I appeared for an interview in Dec 2024.
Closure is the ability of a function to access its lexical scope even after the function has been executed.
Closure allows a function to access variables from its outer scope even after the function has finished executing.
It is created when a function is defined within another function and the inner function references variables from the outer function.
Closure is commonly used in event handlers, callbacks, and in creati...
useEffect is a hook in React that allows side effects to be performed in function components.
Used to perform side effects in function components
Executes after render
Can be used to fetch data, subscribe to events, update the DOM, etc.
Takes a function as the first argument and an optional array of dependencies as the second argument
I appeared for an interview in Jan 2025.
1 - How many type of making center the div elements
2 - let a = [2,4,6,a,b,c] output a = [4,8,12, a2, b2, c2]
3- Reverse the character and remove duplicate word in the string
To solve complex problems, break them down into smaller parts, analyze each part, brainstorm solutions, and test them.
Break down the problem into smaller, more manageable parts
Analyze each part to understand its function and impact on the overall problem
Brainstorm potential solutions, considering different perspectives and approaches
Test the solutions to see which ones work best and iterate as needed
I applied via Naukri.com and was interviewed in Nov 2024. There was 1 interview round.
get props is used to retrieve the value of a property in React components, while set props is used to update the value of a property.
get props is used to access the value of a property passed down from a parent component
set props is used to update the value of a property in the current component
Example: get props - accessing the 'name' prop in a child component: this.props.name
Example: set props - updating the 'count' ...
PUT is used to update or replace an entire resource, while PATCH is used to update or modify part of a resource.
PUT is idempotent, meaning multiple identical requests will have the same effect as a single request.
PATCH is not necessarily idempotent, as multiple identical requests may have different effects.
PUT requires the client to send the entire updated resource, while PATCH only requires the client to send the spec...
I applied via Referral
Microservices offer benefits such as scalability, flexibility, and easier maintenance.
Scalability: Microservices allow for individual components to be scaled independently, leading to better resource utilization.
Flexibility: Each microservice can be developed, deployed, and updated independently, allowing for more flexibility in the development process.
Easier maintenance: With microservices, it is easier to identify an...
I applied via Naukri.com and was interviewed in Oct 2024. There was 1 interview round.
Next.js is a React framework for building server-rendered applications with features like static generation and API routes.
File-based routing: Pages are created by adding files in the 'pages' directory, e.g., 'pages/index.js' for the home page.
Server-side rendering (SSR): Pages can be rendered on the server for better SEO and performance, using 'getServerSideProps'.
Static site generation (SSG): Pre-render pages at buil...
I applied via Naukri.com and was interviewed in Sep 2024. There were 2 interview rounds.
AOT and JIT are compilation techniques in Angular.
AOT (Ahead-of-Time) compilation is done at build time, converting TypeScript and HTML code into efficient JavaScript code before the browser runs it.
JIT (Just-in-Time) compilation is done at runtime, converting TypeScript and HTML code into JavaScript code while the application is running.
AOT improves performance by reducing the size of the bundle and optimizing the cod...
Observables are streams of data that can be subscribed to, while promises are a single future value.
Observables can handle multiple values over time, while promises can only handle a single value.
Observables are cancellable, while promises are not.
Observables support operators like map, filter, and reduce for data transformation.
Promises have a simpler API with just then and catch methods.
Observables are lazy, meaning ...
Data binding is the automatic synchronization of data between the model and view components in an application.
Data binding allows for the seamless updating of data in the model and reflecting those changes in the view without manual intervention.
There are two types of data binding in Angular: one-way binding and two-way binding.
One-way binding updates the view when the model changes, while two-way binding updates both ...
Lazy loading in Angular is a technique used to load modules only when they are needed, improving performance.
Lazy loading helps reduce initial load time by loading modules on demand
Implemented using loadChildren property in routes configuration
Lazy loaded modules have their own routes and components
Directives in Angular are markers on a DOM element that tell Angular to attach a specified behavior to that DOM element or transform the DOM element and its children.
Directives are used to create reusable components in Angular.
There are three types of directives in Angular: Component, Structural, and Attribute directives.
Examples of directives include ngIf, ngFor, and ngStyle.
Pagination task and filter table data
I applied via Company Website and was interviewed in Oct 2024. There were 3 interview rounds.
Deep copy creates a new object with all properties copied, while shallow copy copies references to the original object's properties.
Shallow copy duplicates the top-level properties, but nested objects are shared references.
Example of shallow copy: const shallowCopy = Object.assign({}, originalObject);
Deep copy duplicates all levels of properties, creating entirely new objects.
Example of deep copy: const deepCopy = JSON...
ES6 is the latest version of ECMAScript with new features like arrow functions, classes, and template literals.
Arrow functions provide a more concise syntax for writing functions.
Classes allow for easier object-oriented programming in JavaScript.
Template literals make it easier to work with strings by allowing interpolation and multiline strings.
Creating react componont with api integration, list rendering and adding custom filterals
Coding exercise, custom hooks, UI related quetions
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