Question: Suppose that n random walkers, starting in the center of an n-by-n grid, move one step at a time, choosing to go left, right, up,

Suppose that n random walkers, starting in the center of an n-by-n grid, move one step at a time, choosing to go left, right, up, or down with equal probability at each step. Write a program to help formulate and test ahypothesis about the number of steps taken before all cells are touched.

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