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I applied via Referral and was interviewed in Mar 2021. There was 1 interview round.
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I applied via Recruitment Consultant and was interviewed in Jun 2021. There were 4 interview rounds.
I applied via Recruitment Consulltant and was interviewed before Aug 2023. There was 1 interview round.
I applied via Naukri.com and was interviewed before May 2022. There were 4 interview rounds.
Medium leetcode question related to dp.
LLD round to create a cache library
Design a system similar to Paytm for online payments and transactions.
Implement user authentication and authorization for secure transactions
Develop a user-friendly interface for easy navigation and transactions
Integrate various payment options like credit/debit cards, net banking, UPI, and wallets
Implement a robust backend system to handle transactions and store user data securely
Design a URL shortener service to generate short URLs for long URLs.
Use a unique identifier for each long URL to generate a short URL.
Implement a mapping system to map short URLs to long URLs.
Consider implementing features like custom short URLs, expiration dates, and analytics.
Ensure the short URLs are unique and not easily guessable.
Optimize the service for performance and scalability.
Design a Notification Service for sending alerts to users.
Define types of notifications (email, SMS, push notifications)
Implement a system for users to subscribe/unsubscribe from notifications
Include a scheduling system for sending notifications at specific times
Consider implementing a notification history for users to view past alerts
I was interviewed before Oct 2022.
1h, HackRank, 3 algo problem
posted on 27 May 2024
Math, resizing, English
Java is a programming language, String is a data type for text, Thread is a unit of a process, Exception handling is managing errors.
Java is a popular programming language used for developing various applications.
String is a data type in Java used to store text.
Thread in Java is a unit of a process that can run concurrently with other threads.
Exception handling in Java is the process of managing errors that occur durin
Java program exception handling
I applied via Recruitment Consultant and was interviewed in Mar 2021. There were 3 interview rounds.
Find common ancestor of 2 nodes in a binary tree
Traverse the tree from root to both nodes and store the paths
Compare the paths to find the last common node
Use recursion to traverse the tree and find the common ancestor
To find the minimum element of a stack in O(1) time, maintain a separate stack for minimum values.
Create a separate stack to store minimum values
Push the minimum value onto the minimum stack every time a new value is pushed onto the main stack
Pop the minimum stack every time the main stack pops a value
The top of the minimum stack will always contain the minimum value
Sort a binary array of 0s and 1s and optimize the code.
Use two pointers approach to swap 0s and 1s
Avoid using sorting algorithms like bubble sort or selection sort
Use a single loop to traverse the array and swap elements
Use XOR operation to swap elements
Explaining Java HashMap internals and behavior when hashcode always returns 1.
HashMap uses hashcode to calculate the index of the bucket where the key-value pair will be stored.
If hashcode always returns 1, all key-value pairs will be stored in the same bucket resulting in poor performance.
In this case, HashMap will use a linked list to store multiple key-value pairs in the same bucket.
Retrieving a value from a HashMap...
I applied via Naukri.com and was interviewed before Apr 2023. There were 2 interview rounds.
SQL Questions based on subqueries.
I applied via LinkedIn and was interviewed in Jul 2024. There was 1 interview round.
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