It would depend on the coding exercise; you cannot just have a 30min chat about a relevant practical example? I'm not sure I have met someone who can bullshit his/her way verbally out of a random practical coding issue which I can just describe in a few minutes and they can talk with me about. But that's not some 'pen down a tree balancing algo with the following time/space constraints'. Which you might not have been talking about anyway but which the OP was about.
It would depend on the coding exercise; you cannot just have a 30min chat about a relevant practical example? I'm not sure I have met someone who can bullshit his/her way verbally out of a random practical coding issue which I can just describe in a few minutes and they can talk with me about. But that's not some 'pen down a tree balancing algo with the following time/space constraints'. Which you might not have been talking about anyway but which the OP was about.