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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
I applied via Referral and was interviewed before Aug 2021. There was 1 interview round.
Answer on how to list in react and the input box
Use the map function to create a list in React
Use the state to store the input value
Use onChange event to update the state when the input value changes
Use onSubmit event to handle the form submission
I applied via LinkedIn and was interviewed in May 2021. There was 1 interview round.
I applied via Job lever and was interviewed before Sep 2021. There were 2 interview rounds.
Easy leetcode code 2 questions , HTML5 css javascript simple screen design
I appeared for an interview 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...
Modify a boolean matrix such that if any element is 1, set its entire row and column to 1.
Iterate through the matrix and mark rows and columns to be modified
Use additional arrays to keep track of rows and columns to be modified
Update the matrix in-place based on the marked rows and columns
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
I applied via LinkedIn and was interviewed before May 2021. There were 2 interview rounds.
var, let, and const are all used to declare variables in JavaScript, but they have different scoping rules and behaviors.
var has function scope and can be redeclared and reassigned
let has block scope and can be reassigned but not redeclared
const has block scope and cannot be reassigned or redeclared
Use const for values that won't change, let for values that will, and avoid var
CSS box model defines the layout of elements on a webpage. Padding and margin can apply to block-level elements but not to inline elements.
CSS box model consists of content, padding, border, and margin around an element.
Padding adds space inside the border of an element.
Margin adds space outside the border of an element.
Padding and margin can apply to block-level elements like <div> but not to inline elements lik
Arrow functions are shorter syntax for writing function expressions.
Arrow functions do not have their own 'this' keyword.
Arrow functions cannot be used as constructors.
Arrow functions do not have the 'arguments' object.
Arrow functions are more concise and easier to read.
Regular functions are better for methods and constructors.
JavaScript asynchronous model allows non-blocking code execution by using callbacks and promises.
JavaScript uses an event loop to handle asynchronous operations.
Callbacks are functions passed as arguments to other functions and executed when the operation is complete.
Promises are objects that represent the eventual completion or failure of an asynchronous operation.
Async/await is a newer syntax that allows writing asyn...
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 Recruitment Consulltant and was interviewed before Feb 2023. There was 1 interview round.
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