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I was interviewed in Jan 2025.
One question related to object-oriented programming and one question related to data structures and algorithms.
The system design for the checkout feature on Amazon involves request body, API calls, load balancing, database caching, and CDN considerations.
Request body includes user's selected items, shipping address, payment details, etc.
API calls are made to process payment, update inventory, and send confirmation emails.
Load balancing ensures even distribution of traffic across multiple servers to handle checkout requests effi...
I applied via LinkedIn
Question base on Tree data structures
GC collector in Java is responsible for managing memory by reclaiming unused objects and freeing up memory space.
GC stands for Garbage Collector
Automatically manages memory by reclaiming unused objects
Prevents memory leaks and optimizes memory usage
Different types of GC algorithms like Serial, Parallel, CMS, G1
Example: System.gc() can be used to suggest garbage collection
Design a car rental system at a low level
Use object-oriented programming to model cars, customers, rentals, etc.
Implement a database to store information about available cars, customer bookings, etc.
Include features like booking, returning, and searching for cars
Consider implementing a pricing system based on factors like car type, duration of rental, etc.
I applied via Instahyre and was interviewed in Sep 2023. There were 4 interview rounds.
Hacker rank coding test
Reverse a linked list in k sizes
Break the linked list into groups of size k
Reverse each group individually
Connect the reversed groups back together
What people are saying about PayPal
I applied via Instahyre and was interviewed before Feb 2023. There were 5 interview rounds.
There was MCQs with two coding questions. one easy and one medium.
PayPal interview questions for designations
I applied via Referral and was interviewed in Dec 2021. There were 4 interview rounds.
LC Medium Hackerearth Test
I was interviewed in Dec 2017.
To find the maximum water pond formed between buildings.
Identify the lowest point between the buildings.
Calculate the area of the pond using the distance between the buildings and the depth of the pond.
Consider any obstacles or uneven ground that may affect the pond's shape.
Use a surveying tool or satellite imagery to get accurate measurements.
Take into account any drainage systems or natural water flow that may affect
Design a dictionary using trie with insert, update and delete operations.
Implement a Trie data structure with nodes containing a character and a boolean flag to indicate end of word
For insert operation, traverse the trie and add nodes for each character in the word
For update operation, delete the existing word and insert the updated word
For delete operation, mark the end of word flag as false and delete the node if it ...
React is a modern JavaScript library for building user interfaces, while jQuery is a fast and concise JavaScript library for DOM manipulation.
React is component-based, promoting reusability and modularity.
React uses a virtual DOM for efficient updates, while jQuery directly manipulates the DOM.
React is declarative, making it easier to reason about the UI, while jQuery is imperative.
React is typically used for single-pa...
I applied via Campus Placement and was interviewed before Nov 2023. There was 1 interview round.
1hr aptitude + coding
based on 5 interviews
4 Interview rounds
based on 15 reviews
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