An HR representative recommended this role to me via LinkedIn for a contractor position. Following this, there were two rounds of technical interviews, both conducted in a friendly atmosphere.

At each interview, tasks were assigned and were to be completed within 45 minutes.

During the first interview, I encountered a problem related to binary trees. I did not have sufficient time to complete it entirely due to specific requirements for outputting the results.

In the second interview, I successfully completed the task and tested it.

I had to wait approximately three weeks for their decision, which ultimately resulted in a rejection without any feedback.

My advice based on this experience: if you fail the first interview, the second round effectively becomes irrelevant. Therefore, it's advisable to skip the subsequent round and focus your energy on interviews with other companies.

What are the ways to traverse a binary tree?