It is my observation that you generally don't need to know how certain algorithms are implemented. You need to know of them, what they do and their strengths an

It is my observation that you generally don't need to know how certain algorithms are implemented. You need to know of them, what they do and their strengths and weaknesses compared to other algorithms. That is, just enough knowledge to make the choice on which way to go. The actual implementation part can be Googled when the time comes. If I was ever an interviewer, I would not ask candidates to implement algorithms, but rather to explain why you would use a certain one. Or give them a situation and some choices and ask them to choose one and justify their choice. (e.g. For this task, would you do it in python or C? Would you use a linked list or an array to solve this problem?)