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I applied via AngelList and was interviewed before Mar 2023. There were 3 interview rounds.
Had multiple questions on Array and String overall the difficulty level was medium the interviewer was friendly and patient
Top trending discussions
Two DSA ques were asked. One easy and one medium.
I applied via Company Website and was interviewed in Mar 2021. There were 4 interview rounds.
Hash map is a data structure that stores key-value pairs and uses a hash function to map keys to indices in an array.
Hash function is used to convert the key into an index in the array
Collisions occur when two keys map to the same index, which can be resolved using separate chaining or open addressing
Load factor is the ratio of number of elements to the size of the array, and affects the performance of hash map
Operatio...
SQL query to get 2nd highest salary
Use ORDER BY and LIMIT to get the highest salary
Use subquery to exclude the highest salary and get the 2nd highest
Example: SELECT salary FROM employees ORDER BY salary DESC LIMIT 1,1
I applied via Recruitment Consulltant and was interviewed before Oct 2021. There were 4 interview rounds.
Virtual DOM is a lightweight copy of the real DOM, used for efficient updates.
Real DOM updates are slow and expensive, while virtual DOM updates are fast and efficient.
Virtual DOM is used in React to update the UI without reloading the entire page.
Real DOM is the actual HTML document, while virtual DOM is a JavaScript object.
Virtual DOM compares the previous and current states of the UI to determine the minimum number ...
var is function scoped, let and const are block scoped. var can be redeclared and reassigned, let can be reassigned but not redeclared, const cannot be reassigned or redeclared.
var is hoisted to the top of the function, let and const are not
var can be redeclared within the same scope, let and const cannot
let and const have a temporal dead zone where they cannot be accessed before they are declared
const cannot be reassi...
Optimization techniques in React include code splitting, lazy loading, and memoization.
Code splitting: breaking down the code into smaller chunks to reduce load time.
Lazy loading: loading components only when they are needed, reducing initial load time.
Memoization: caching the results of expensive function calls to improve performance.
Using shouldComponentUpdate to prevent unnecessary re-renders.
Using React.PureCompone...
I have experience working with Agile methodology in my previous projects.
I have worked in Scrum and Kanban frameworks.
I have experience in conducting daily stand-up meetings, sprint planning, and retrospectives.
I have worked in cross-functional teams and have experience in collaborating with product owners and stakeholders.
I have used tools like Jira and Trello to manage tasks and track progress.
In one of my previous p...
I applied via Recruitment Consulltant and was interviewed in Feb 2024. There were 2 interview rounds.
Immutable class, remove duplicates from string using Java 8
Create an immutable class to represent the string
Use Java 8 streams to remove duplicates from the string
Convert the string to a character array, use distinct() and collect() to remove duplicates
Sealed classes in Java restrict inheritance to a predefined set of subclasses.
Sealed classes were introduced in Java 15 to restrict inheritance to a predefined set of subclasses.
Subclasses of a sealed class must be declared in the same file as the sealed class.
Sealed classes are declared using the 'sealed' modifier before the 'class' keyword.
Example: sealed class Shape permits Circle, Square, Triangle;
Fallout mechanism between microservices refers to how failures in one microservice can impact other microservices.
Fallout can occur due to cascading failures when one microservice depends on another.
Implementing circuit breakers can help prevent fallout by isolating failures.
Monitoring and alerting systems are crucial for detecting and responding to fallout.
Using asynchronous communication can reduce the impact of fall...
HashSet is a collection that stores unique elements using a hash table.
Uses hashing to store elements
Does not allow duplicate elements
Provides constant-time performance for basic operations like add, remove, contains
I resolve conflicts by actively listening, understanding all perspectives, finding common ground, and proposing solutions.
Actively listen to all parties involved
Understand each perspective and the underlying reasons for conflict
Find common ground and areas of agreement
Propose solutions that address the concerns of all parties
I applied via Walk-in and was interviewed in Oct 2024. There were 2 interview rounds.
I applied via Referral and was interviewed in May 2024. There were 2 interview rounds.
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