I had only one round of interviews, and I was not shortlisted for further rounds.

The interviewer was a good and knowledgeable person. The interview started on time as scheduled.

Questions asked:

• Implement a recursive method to reverse linked list elements.
• Explain the internal implementation of HashMap.
• What elements exist in the HashMap class?
• Explain microservices architecture components.
• Do you know about binary search trees?
• Are you comfortable with data structures and algorithms?
• What is the difference between ConcurrentHashMap and synchronized HashMap?
• What is the throughput of the app you developed? Specifically, how many requests can it handle?

Implement a recursive method to reverse linked list elements.