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I applied via Recruitment Consulltant and was interviewed in Nov 2024. There were 3 interview rounds.
10 MCQ questions and 1 React question
Top trending discussions
Node.js is a runtime environment that allows you to run JavaScript code outside of a web browser.
Node.js is built on Chrome's V8 JavaScript engine.
It uses an event-driven, non-blocking I/O model.
Node.js is commonly used for building server-side applications.
It has a large ecosystem of open-source libraries and frameworks like Express.js.
Event loop is a mechanism that allows a program to efficiently handle multiple events or tasks concurrently.
Event loop is commonly used in asynchronous programming to manage tasks that may take varying amounts of time to complete.
It continuously checks for events or tasks in a queue and executes them one by one.
Event loop helps prevent blocking of the main thread by allowing non-blocking execution of tasks.
Popular exam...
Callback is a function passed as an argument to another function to be executed later, while a promise is an object representing the eventual completion or failure of an asynchronous operation.
Callback is used in traditional asynchronous programming, while promises are used in modern asynchronous programming.
Callbacks can lead to callback hell or pyramid of doom, while promises provide better readability and error hand...
Middlewares in Node.js are functions that have access to the request and response objects, and can modify or terminate the request-response cycle.
Middlewares are functions that are executed in the middle of the request-response cycle.
They can perform tasks like parsing request data, logging, authentication, etc.
Middlewares can be added using app.use() method in Express framework.
Example: app.use(bodyParser.json()) to p
Event emitter is a pattern used to handle and respond to events in software development.
Event emitter is a design pattern commonly used in Node.js for handling events.
It allows objects to subscribe to events and be notified when those events occur.
Event emitter is often used for asynchronous programming and decoupling components.
Example: EventEmitter class in Node.js can be used to create custom events and handle them.
Collection framework is a set of interfaces and classes in Java that provide a way to store and manipulate groups of objects.
Provides interfaces like List, Set, Map for storing collections of objects
Includes classes like ArrayList, HashSet, HashMap for implementing these interfaces
Allows for easy manipulation, sorting, searching, and iteration of collections
Used in various applications like data processing, data storag
Spring Boot is a Java-based framework used for creating standalone, production-grade Spring-based applications.
Spring Boot simplifies the process of creating Spring applications by providing defaults for configuration and eliminating the need for XML configuration files.
Annotations in Spring Boot are used to simplify the configuration of Spring applications by providing metadata about the application.
Examples of annota...
I applied via Recruitment Consulltant and was interviewed in Jun 2024. There was 1 interview round.
Data Analysts are responsible for collecting, processing, and analyzing data to help organizations make informed decisions.
Collecting and organizing data from various sources
Cleaning and processing data to ensure accuracy and consistency
Analyzing data using statistical techniques and tools
Creating visualizations and reports to present findings
Interpreting data to provide insights and recommendations
Collaborating with s...
I appeared for an interview in Jan 2021.
Round duration - 126 minutes
Round difficulty - Hard
This round consist of coding questions as well as mcqs based on aptitude as well as some domain sections. This round is hard.
Given an N*M matrix filled with integer numbers, determine the maximum sum that can be obtained from a path starting from any cell in the first row to any cell in the last row...
Find the maximum sum path in a matrix from top row to bottom row by moving down or diagonally.
Use dynamic programming to keep track of maximum sum at each cell.
At each cell, consider the maximum sum from the cell above, left diagonal, and right diagonal.
Add the current cell value to the maximum of the three possibilities.
Repeat this process for all cells in the matrix to find the maximum sum path.
Given a 2-dimensional boolean matrix mat
of size N x M, your task is to modify the matrix such that if any element is 1, set its entire row and column to 1. Specifi...
Modify a boolean matrix such that if any element is 1, set its entire row and column to 1.
Iterate through the matrix to find elements with value 1
Store the row and column indices of these elements
Update the entire row and column for each element found to be 1
Round duration - 45 minutes
Round difficulty - Easy
In this round the interviewer ask few questions related to domain and at last he ask some behavioral questions.
You are provided with two singly linked lists containing integers, where both lists converge at some node belonging to a third linked list.
Your task is to determine t...
Find the node where two linked lists merge, return -1 if no merging occurs.
Traverse both lists to find the lengths and the last nodes
Align the starting points of the lists by adjusting the pointers
Traverse both lists simultaneously until a common node is found
Tip 1 : Be calm and have confidence . Confidence is the key to crack any interview.
Tip 2 : Try to give maximum time on basics of a topic
Tip 3 : Practice interview questions
Tip 4 : Do atleast 2 projects
Tip 1 : Put only those skills in resume which the company requires, but don't put false information in resume
Tip 2 : Write only those things in resume in which you are 100% confident
Tip 3 : Have projects in resume and prepare well for it
Tip 4 : Keep it short and crisp.
Tip 5 : Focus on important things in resume
I applied via Referral and was interviewed in Mar 2024. There was 1 interview round.
To minimize the sum of grid cells in a square matrix, flip rows or columns as needed.
Identify the rows or columns with the highest values and consider flipping them to reduce the sum
Try different combinations of flipping rows and columns to find the minimum sum
Consider using dynamic programming or backtracking to efficiently explore all possible combinations
I applied via Company Website and was interviewed in Nov 2024. There was 1 interview round.
A stack is a Last In First Out (LIFO) data structure, while a queue is a First In First Out (FIFO) data structure.
Stack: LIFO - Last In First Out. Example: browser history where the last page visited is the first to be accessed.
Queue: FIFO - First In First Out. Example: a line at a grocery store where the first person in line is the first to be served.
Function to find two numbers in array that add up to target. Optimize solution.
Use a hash map to store each number and its index as you iterate through the array.
For each number, check if the difference between the target and the number exists in the hash map.
Return the indices of the two numbers that add up to the target.
Prevent the duplicate accounts
30min and ask one coding question
30min and ask 2 coding question
based on 1 interview
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