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I applied via Approached by Company and was interviewed in Jun 2024. There were 2 interview rounds.
Compile time errors occur during compilation while run time errors occur during execution of the program in Java.
Compile time errors are syntax errors detected by the compiler, such as missing semicolons or typos.
Run time errors occur during program execution, such as null pointer exceptions or array index out of bounds.
Compile time errors prevent the program from being compiled successfully, while run time errors can ...
Find the maximum element in the array of strings.
Iterate through the array and compare each element to find the maximum.
Use a built-in function like Math.max() to find the maximum element.
Consider converting string elements to numbers if applicable before comparison.
Find elements in a string that occur more than once
Iterate through the string and count occurrences of each element
Store elements with occurrences greater than one in a separate list
let is mutable and can be reassigned, const is immutable and cannot be reassigned in JavaScript.
let is block-scoped, const is also block-scoped.
let can be reassigned, const cannot be reassigned.
Use const for values that should not change, use let for values that may change.
useState is a hook in React that allows functional components to have state.
useState is used to declare a state variable in a functional component.
It returns an array with the current state value and a function to update that value.
Example: const [count, setCount] = useState(0);
To find palindrome for a given number, reverse the number and compare with the original number.
Convert the number to a string to easily reverse it
Reverse the string and compare with the original string to check for palindrome
If the reversed string is equal to the original string, then the number is a palindrome
Redux is a state management library for React.js applications.
Redux helps manage the state of a React application in a predictable way
It stores the entire state of the application in a single immutable object
Actions are dispatched to update the state using reducers
Components can subscribe to the Redux store to access the state
Junit is a popular testing framework in Java used for unit testing.
Testing individual units of code
Automating test cases
Ensuring code quality and reliability
Integration testing with other frameworks like Mockito
Top trending discussions
I applied via Naukri.com and was interviewed in Dec 2024. There was 1 interview round.
Two dynamic programming challenges at the hard level on LeetCode and 10 medium-level SQL challenge.
posted on 22 Nov 2024
I applied via LinkedIn and was interviewed in May 2024. There was 1 interview round.
Request lifecycle in Rails involves routing, controller actions, rendering views, and responding to the client.
1. Request comes in through the browser or API endpoint.
2. Rails router determines which controller and action to route the request to.
3. Controller action processes the request, interacts with the model, and prepares data for the view.
4. View template is rendered with the data from the controller.
5. Response ...
Implement Merge Sort algorithm in Ruby
Divide the array into two halves recursively
Merge the sorted halves back together
Use a helper method to merge the two halves
Coding test around front end using react
I applied via Job Portal and was interviewed before Nov 2023. There were 3 interview rounds.
Use a user table with a column for user type (free, gold, platinum)
Create a user table with columns for user ID, name, email, user type
Use a separate table for user types with columns for type ID and type name
Establish a one-to-many relationship between user and user type tables
Example: user table - user_id, name, email, type_id; user_type table - type_id, type_name
High-level design for a live rank dashboard for a live test with millions of users.
Use a scalable architecture to handle millions of users concurrently.
Implement real-time data processing to update ranks dynamically.
Utilize caching mechanisms to improve performance and reduce load on the database.
Design a user-friendly interface with intuitive data visualization.
Include features for filtering, sorting, and searching to
I applied via Naukri.com and was interviewed before Oct 2022. There were 4 interview rounds.
Implement login with Google SSO, show emails in a single place
JWT can be implemented by generating a token with user information and a secret key, then verifying the token using the same secret key.
Generate a JWT token with user information and a secret key
Include necessary claims like expiration time, issuer, etc.
Verify the JWT token using the same secret key
Handle token expiration and refresh if needed
Middleware in Express is a function that has access to the request and response objects.
Create a middleware function using app.use() method in Express.
Middleware functions have access to the request object (req), the response object (res), and the next middleware function in the application's request-response cycle.
Example: app.use((req, res, next) => { console.log('This is a middleware function'); next(); });
Lazy loading in Angular delays loading of modules until they are needed
Lazy loading helps improve performance by only loading modules when they are required
It is achieved by using the loadChildren property in the route configuration
Lazy loaded modules are loaded asynchronously when the user navigates to the corresponding route
Server-side rendering (SSR) in Angular can be enabled by using Angular Universal.
Install Angular Universal using Angular CLI
Create a new Angular Universal project
Update app.module.ts to include server-side rendering
Build and run the Angular Universal project
I was interviewed in Jan 2021.
Round duration - 70 minutes
Round difficulty - Easy
We're provided with 60 minutes.
We're provided with desktop as it was online test.
Determine if a given year, represented as an integer 'N', is a leap year.
A leap year is defined as a year with 366 days, unlike a normal year which has 365 days.
The initial i...
Round duration - 25 minutes
Round difficulty - Easy
They basically ask questions related to operating system
Round duration - 15 minutes
Round difficulty - Easy
There were 2 interviewers who talked to me and ask different questions regarding my company, my experience in college etc.
It was kind of chit chat but basically they were testing my conversation skills.
Tip 1 : Try to give mock interview as much as you can
Tip 2 : Good with technical skills
Tip 1 : Mention good projects
Tip 2 : Any internship will be add-on
I was interviewed before Sep 2020.
Round duration - 120 minutes
Round difficulty - Easy
It was a mix of mathematical aptitude, logical ability, and puzzles along with 2 programming questions of easy and medium level. Time was enough and no sectional time was present. 1-2 MCQs on SQL were also present.
This round was immediately followed by an SHL aptitude test which was basically a quick limited time check of your verbal ability and math because many questions were to be done in 1 hour.
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...
You need to make the modifications in the input matrix.
You do not need to print anything, it has already been taken care of.
Round duration - 60 minutes
Round difficulty - Easy
It was an online video interview round on HackerEarth with simultaneous code option. It was mostly justifying your resume in the first 15 minutes. After that OOPS was majorly asked. Basics of programming including questions on STL were asked. A class which required inheritance was asked by the interviewer to write. I was helped by the interviewer if i got stuck somewhere, Some questions on implementation of hashmaps and priority queues were also asked. A puzzle was asked which luckily struct to me at that moment.
Tip 1 : Never give up
Tip 2 : When u start a topic, don't move on to next topic before you are 100% confident in previous topic
Tip 3 : Try to give maximum time on basics of a topic especially OOPS
Tip 4 - Practice Atleast 250 Questions
Tip 5 - Ex- Do atleast 2 projects
Tip 1 : Write only those things in resume in which you are 100% confident
Tip 2 : Write maximum projects you have and be ready to explain them thoroughly
Tip 3 : Don't make any silly spelling mistakes on resume
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