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I appeared for an interview before Sep 2023.
Reverse a binary tree by swapping left and right child nodes recursively
Start by swapping the left and right child nodes of the root node
Recursively reverse the left and right subtrees
Continue this process until all nodes are reversed
Design a DB Pool Management system for efficient connection handling
Use connection pooling to manage a pool of database connections
Implement features like connection timeout, connection validation, and connection reuse
Consider using a connection pool library like HikariCP or Apache DBCP
Monitor and adjust pool size based on application demand
Handle connection leaks and errors gracefully
Top trending discussions
I applied via Naukri.com and was interviewed before Mar 2020. There were 4 interview rounds.
Hashtable is synchronized while hashmap is not.
Hashtable is thread-safe while hashmap is not.
Hashtable does not allow null keys or values while hashmap allows one null key and multiple null values.
Hashtable is slower than hashmap due to synchronization.
Hashtable is a legacy class while hashmap is a newer implementation.
Hashmap is not thread-safe while Concurrent Hashmap is thread-safe.
Hashmap is not suitable for multi-threaded environments as it can lead to race conditions and data inconsistencies.
Concurrent Hashmap allows multiple threads to access and modify the map concurrently without any data inconsistencies.
Concurrent Hashmap uses a technique called lock striping to achieve thread-safety.
Concurrent Hashmap is slower than Hashma...
I appeared for an interview in Sep 2017.
I applied via Naukri.com and was interviewed before May 2018. There were 5 interview rounds.
I applied via Recruitment Consultant and was interviewed in May 2019. There were 3 interview rounds.
I appeared for an interview in Sep 2019.
I applied via Recruitment Consultant and was interviewed before Jan 2020. There were 5 interview rounds.
I am proficient in Java, Python, and C++. I have 2 years of experience in software development. I have excellent communication skills for client interaction.
Proficient in Java, Python, and C++
2 years of software development experience
Excellent communication skills for client interaction
I appeared for an interview before Nov 2020.
I applied via Naukri.com and was interviewed before Sep 2020. There were 4 interview rounds.
based on 1 interview experience
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