Скачать или смотреть Towers of Hanoi using RECURSION TWICE!

Here we look at the "Towers of Hanoi" problem, which involves using recursion twice. We have to move n cylinders of different sizes from one peg to another, utilizing a third one if necessary, and such that no "bigger" cylinder is on top of a smaller cylinder at any point. What we can do is to define inductive cases really easily, and then solve the whole problem by just relating the two recursive "moves" of n-1 cylinders to each other.

An example worked out is here:    • Towers of Hanoi EXAMPLE  

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I am a professor of Computer Science, and am passionate about CS theory. I have taught many courses at several different universities, including several sections of undergraduate and graduate theory-level classes.