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Thanks! I was just saying how I arrived at the answer, how my mind works, which I think is what the OP was looking to see - how people solve a problem like this

Thanks! I was just saying how I arrived at the answer, how my mind works, which I think is what the OP was looking to see - how people solve a problem like this. Hope this comes up in my next whiteboard interview :-)

ColinWright 8y ago
Oh, OK, that wasn't obvious to me, but now is - thanks for the clarification, and for the answer. Interesting. Your technique, by the way, is a classic puzzle solving technique that I've used successfully many times, sometimes to great effect. Nice one.