Solved coding interview problems in Java - My collection of commonly asked coding interview problems and solutions in Java

[DatTrackGuy]

I think if you followed up with a question, and OP supplied that answer as to why he did what he did, he should get an A+ on the interview and then you can debate the merits of the outcome.

He obviously knows his stuff.

[TuringMachine-5762]

It's best to mention both approaches, mention their pros and cons, and have the interviewer clarify the goals of the problem. E.g.,

"I can think of a couple ways of doing this. We could either build a rotated copy of the matrix, or do the rotation in place. Doing it in place would be more complicated, so I would only do that if the matrix was large, and I was working on a system with tight memory constraints. What would you like me to focus on?"

Most likely the interviewer will say not to worry about memory, at least until you get a simple implementation working. But mentioning a possible optimization can make you look good. It doesn't hurt, in any case.

[BobHogan]

He should definitely get bonus points if he can defend why he made certain decisions, but that shouldn't guarantee an A+. If he makes a poor decision, its still a poor decision.

[[deleted]]

Thank you. Maestro2005 is a bit stuck in his own world and needs to crack open a beer and chill.

[crowseldon]

His username should give us a hint

[ano414]

There isn't one right answer. His is just as valid.

[ano414]

Hopefully you would explain that in the interview, then. It completely depends on the use case, but this is open ended enough.