The interviewer was late.... after connection he keeps typing on his mechanical keyboard all the time (Noisy, can not hear the question clearly!) typing noise starts before I even begin to solve the problem and thru out the entire interview, and he is not looking at my method, just say this is no good. When it comes coding/follow up, he says whatever you want to inplement and it is up to you. Obviouly I failed... The problem is so easy, how to do " return the prev node (means value just smaller )in binary search tree "....I said are you giving me an integer or a node referer, he does not say anything, he says whatever you want! Then I start to discuss case by case(because if an int is given, we have to search for the node first, and code will be different, if there is a reference, you can directly check the prev node in certain cases) but he says you do not pay attention to detail....

i do not think i am that bad...... I just passed another FANNG phone interview and got an offer from a well-known finance company, I doubt what i should do next, because I have 2 company FANNG virtual onsite next week. My emotion is impacted...

Any suggestions?