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I applied via Company Website and was interviewed before May 2023. There were 2 interview rounds.
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Word search II is a problem where you have to find all words from a given list in a 2D board of characters.
Use a trie data structure to efficiently search for words in the board.
Implement a backtracking algorithm to explore all possible paths in the board.
Optimize the search by pruning branches that cannot lead to a valid word.
I was interviewed before Jul 2023.
45 min round. Similar to Leetcode medium level question.
45 min coding round, 2 question asked
Design a system for proximity service
Utilize geolocation data to track user locations
Implement algorithms to calculate proximity between users
Use real-time updates to notify users of nearby contacts
Implement boolean canConstruct(String targetString, String[] dict) which returns true if we can construct the targetString by concatenating the words given in the dictionary
Implement a key value store for storing and retrieving data efficiently.
Use a hash table or a balanced tree data structure to store key-value pairs.
Implement functions for inserting, updating, deleting, and retrieving key-value pairs.
Consider implementing features like transactions, concurrency control, and data persistence.
Example: Implement a simple key value store using a hash table in Python.
Design LLD of google calendar
Use microservices architecture for scalability and maintainability
Implement features like event creation, editing, deletion, reminders, and sharing
Utilize databases for storing user data and events
Include user authentication and authorization for security
Integrate with external APIs for syncing with other calendars
Design a Booking Management System for handling reservations and scheduling.
Create a user-friendly interface for customers to make bookings
Implement a database to store booking information
Include features for managing availability, cancellations, and payments
It was a bar raiser round and questions were related to trees and binary search
Asked medium level graph question.
Asked LLD question with at flow executable.
I applied via Instahyre and was interviewed in May 2024. There were 2 interview rounds.
Two medium DSA questions based on strings.
Design a video conferencing platform similar to Google Meet.
Implement real-time video and audio streaming
Include features like screen sharing, chat, and participant management
Ensure scalability to support large number of users
Focus on security and privacy measures
Optimize for low latency and high quality video/audio
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