Describe a recursive solution to the Towers of Hanoi puzzle with N disks.
What will be an ideal response?
The solution is:
(1) Move the top N-1 disks to the extra peg.
(2) Move the largest disk from the original peg to the destination peg.
(3) Move the N-1 disks from the extra peg to the destination peg.
The first step is the same problem again, with the extra peg and the destination peg interchanged, and therefore this
subproblem can be solved recursively. The base case is when N = 1, in which case we simply move the disk without any
recursive call.
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?_____ exchanges are owned and operated by a single company.
Fill in the blank(s) with the appropriate word(s).