Amazon Software Engineer interview questions

Recruiter reached out to me. Interview was scheduled for a week later. It was a technical interview. I was asked a few basic questions about OOP like what's a class, object, etc. Then one algorithm question.

Just been asked two questions the first one is to write a sudo code for an binary heap to print out the 17th, 18th and 19th node's value. the second one is to write codes to print out the maximum and the second maximum value in an array (not sorted). In order to reach the fastest, the interviwer gave me a hint to separate the situation with small array and large array..