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Paytm
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Create a counter and a to do app on codesandbox platform
Create a counter component with buttons to increment and decrement the count
Implement a to do app with input field to add tasks and a list to display them
Use React or any other front-end framework/library for building the apps
Polyfill for promise.all() is a code that adds support for promise.all() in older browsers.
Polyfill can be implemented using a combination of Promise and Array.prototype.reduce()
The polyfill should return a promise that resolves when all promises in the input array have resolved
If any promise in the input array rejects, the polyfill should reject with the reason of the first promise that rejected
Creating a custom dropdown component in React using HTML Select tag.
Create a new component and import React
Use the HTML Select tag to create the dropdown
Use the map function to loop through the array of strings and create the options
Add an onChange event to handle the selection and update the state
Pass the array of strings as props to the component
Code to convert account number to asterisk
Create a function that takes in an account number as input
Use string slicing to replace characters with asterisks
Return the modified account number as output
Use Node.js fs module to create folder and file structure in React component
Require fs module in React component
Use fs.mkdirSync() method to create folder
Use fs.writeFileSync() method to create file
Use path.join() method to join folder and file paths
Handle errors using try-catch block
JS code to convert Roman to decimal number
Create a map of Roman numerals to their decimal values
Loop through the Roman numeral string from right to left
If the current numeral is less than the previous numeral, subtract it from the total
Otherwise, add it to the total
Return the total
Polyfill for flat function
Create a function that takes an array and a depth as arguments
Use recursion to flatten the array to the specified depth
If depth is not specified, flatten the array completely
Return the flattened array
Flatten a nested array into a single-level array.
Use recursion to iterate through each element of the array.
If the element is an array, call the function recursively.
If the element is not an array, add it to the result array.
Code to output 72 by calling add(5,3).mul(9).calc()
Define a class with add, mul, and calc methods
add method should add two numbers and return the class instance
mul method should multiply the result with a number and return the class instance
calc method should return the final result
Call the methods in the given order to get the output 72
Creating a Todo list component in React
Create a new React component for the Todo list
Use state to store the list of tasks
Render the list of tasks using map()
Add a form to add new tasks to the list
Add a button to delete tasks from the list
It was on hackerrank, its like OA, it has one problem solving question, 3-4 html-css mcq's and one react coding questuion.
Create a counter and a to do app on codesandbox platform
Create a counter component with buttons to increment and decrement the count
Implement a to do app with input field to add tasks and a list to display them
Use React or any other front-end framework/library for building the apps
I applied via Company Website and was interviewed in Feb 2022. There were 3 interview rounds.
I applied for the Frontend role and test consisted of JS and React questions
Flatten a nested array into a single-level array.
Use recursion to iterate through each element of the array.
If the element is an array, call the function recursively.
If the element is not an array, add it to the result array.
Polyfill for flat function
Create a function that takes an array and a depth as arguments
Use recursion to flatten the array to the specified depth
If depth is not specified, flatten the array completely
Return the flattened array
JS code to convert Roman to decimal number
Create a map of Roman numerals to their decimal values
Loop through the Roman numeral string from right to left
If the current numeral is less than the previous numeral, subtract it from the total
Otherwise, add it to the total
Return the total
Creating a custom dropdown component in React using HTML Select tag.
Create a new component and import React
Use the HTML Select tag to create the dropdown
Use the map function to loop through the array of strings and create the options
Add an onChange event to handle the selection and update the state
Pass the array of strings as props to the component
Creating a Todo list component in React
Create a new React component for the Todo list
Use state to store the list of tasks
Render the list of tasks using map()
Add a form to add new tasks to the list
Add a button to delete tasks from the list
Use Node.js fs module to create folder and file structure in React component
Require fs module in React component
Use fs.mkdirSync() method to create folder
Use fs.writeFileSync() method to create file
Use path.join() method to join folder and file paths
Handle errors using try-catch block
Code to output 72 by calling add(5,3).mul(9).calc()
Define a class with add, mul, and calc methods
add method should add two numbers and return the class instance
mul method should multiply the result with a number and return the class instance
calc method should return the final result
Call the methods in the given order to get the output 72
Polyfill for promise.all() is a code that adds support for promise.all() in older browsers.
Polyfill can be implemented using a combination of Promise and Array.prototype.reduce()
The polyfill should return a promise that resolves when all promises in the input array have resolved
If any promise in the input array rejects, the polyfill should reject with the reason of the first promise that rejected
Code to convert account number to asterisk
Create a function that takes in an account number as input
Use string slicing to replace characters with asterisks
Return the modified account number as output
Top trending discussions
I applied via Company Website and was interviewed before Jan 2021. There were 3 interview rounds.
Routing through a proxy involves configuring the proxy server to forward requests to the destination server.
Configure the proxy server to listen for incoming requests
Configure the proxy server to forward requests to the destination server
Configure the client to use the proxy server for outgoing requests
Use a proxy server to bypass network restrictions or improve performance
Examples: Nginx, Apache, Squid
Race condition is a situation where multiple threads/processes access and manipulate shared data simultaneously.
It can be eliminated by using synchronization techniques like locks, semaphores, and mutexes.
Another way is to use atomic operations that ensure the data is accessed and modified atomically.
Using thread-safe data structures can also prevent race conditions.
Example: Two threads trying to increment a shared var...
JCube is a Java library for creating and manipulating Rubik's Cube puzzles.
JCube provides classes for representing Rubik's Cube puzzles and algorithms for solving them.
It supports various cube sizes and can generate random scrambles.
JCube can be used in Java applications or as a standalone command-line tool.
It is open source and available on GitHub.
Regression testing is the process of testing changes made to a software application to ensure that existing functionality still works.
It is performed after making changes to the software
It ensures that existing functionality is not affected by the changes
It helps to catch any defects or bugs that may have been introduced
It can be automated using testing tools
Examples include retesting after bug fixes, testing after new...
Software engineering principles are the best practices and guidelines for developing high-quality software.
Software should be designed with modularity and scalability in mind.
Code should be well-documented and easy to read.
Testing and debugging should be an integral part of the development process.
Version control should be used to manage code changes.
Security and privacy should be considered throughout the development ...
A Singleton class is a class that can only have one instance at a time.
It restricts the instantiation of a class to a single object.
It provides a global point of access to that instance.
It is often used in situations where a single object is required to coordinate actions across a system.
Example: Database connection manager, Configuration manager, Logger manager.
Testing principles ensure software quality, while design principles guide software development.
Testing principles include unit testing, integration testing, and acceptance testing.
Design principles include SOLID, DRY, and KISS.
Testing principles ensure that software meets requirements and is free of defects.
Design principles guide software development to be modular, maintainable, and scalable.
I have the necessary skills, experience, and passion to contribute to VISA's success.
I have a strong background in software development and have worked on projects similar to those at VISA.
I am a quick learner and can adapt to new technologies and programming languages easily.
I am passionate about creating high-quality software that meets the needs of users and exceeds their expectations.
I am a team player and can work...
A profile that challenges me to learn and grow while allowing me to contribute to a team.
A position that encourages continuous learning and development
A role that allows me to collaborate with a team and contribute to projects
A company culture that aligns with my values and work ethic
I am interested in exploring new opportunities and challenges that this company can offer.
I am impressed with the company's reputation and growth potential.
I am excited about the projects and technologies this company is working on.
I believe this company can provide me with a better work-life balance and career growth opportunities.
I am looking for a company culture that aligns with my values and goals.
I am open to exp...
Design an MVC controller system to route URLs to the appropriate controllers based on the URL structure.
Define a routing mechanism that maps URLs to controller actions.
Use a hierarchical structure where each segment of the URL corresponds to a controller.
Example: For 'xyz.com/a/b/c', 'a' routes to 'AController', 'b' to 'BController', and 'c' to 'CController'.
Implement a method to parse the URL and invoke the correspond...
Autocomplete in IDEs helps developers write code faster by suggesting code snippets and completing code as they type.
Autocomplete should suggest code snippets based on the context of the code being written
Autocomplete should prioritize suggestions based on frequency of use
Autocomplete should also suggest variable and function names
Autocomplete should be customizable to allow for user-defined snippets and suggestions
Exa...
My weakness is public speaking.
I tend to get nervous when speaking in front of large groups.
I am working on improving my public speaking skills by practicing and seeking feedback.
I have taken courses and attended workshops to help me overcome my fear of public speaking.
Comparing 2 basketball game scenarios with different number of trials and baskets required to win
Calculate the probability of winning in each game scenario using binomial distribution formula
Compare the probabilities to determine which game scenario is preferable
In game1, the probability of winning is p. In game2, the probability of winning is the sum of probabilities of making 2 or 3 baskets
If p is high, game1 is pref...
I want to join Visa to contribute to innovative payment solutions and be part of a global leader in financial technology.
Visa is at the forefront of digital payment innovation, allowing me to work on cutting-edge technologies.
The company's commitment to security aligns with my passion for developing secure software solutions.
Visa's global presence offers opportunities to collaborate with diverse teams and learn from di...
I'm a passionate software engineer with a strong background in full-stack development and a love for problem-solving.
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 like React and Django.
Enjoy collaborating in agile teams an...
I applied via Campus Placement and was interviewed in Dec 2016. There were 5 interview rounds.
Implement Binary Search Tree using given array of strings.
Sort the array in ascending order
Find the middle element and make it the root of the tree
Recursively create left and right subtrees using the left and right halves of the array
Repeat until all elements are added to the tree
Print the given Binary search tree in ascending order
Traverse the left subtree recursively
Print the root node
Traverse the right subtree recursively
Chennai faces problems related to water scarcity, traffic congestion, and pollution.
Water scarcity due to inadequate rainfall and poor management of water resources.
Traffic congestion due to the increasing number of vehicles and poor road infrastructure.
Pollution caused by industries, vehicular emissions, and improper waste disposal.
Need more context on the question to provide an answer.
Please provide more information on the problem to be solved.
Without context, it is difficult to provide a solution.
Can you please provide more details on the problem statement?
Developed a web application using Python and Django framework for managing inventory and sales.
Used Python programming language for backend development
Implemented Django framework for building web application
Designed database schema for inventory and sales data
Integrated frontend using HTML, CSS, and JavaScript
Implemented user authentication and authorization features
Some of the top questions asked at the Paytm Front Office and Accounts Executive interview -
based on 1 interview experience
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