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Help me write “unoccupied Positions”
/**
*This returns a list of the coordinates (row,col) of positionsaround the row, col
*parameters that do not contain a fish or shark. The positions thatare considered
*are directly above, below, left and right of row, col and IN THATORDER. Where 0,0 is
*the upper left corner when fish and sharks arrays are printed out.Remember that creatures
*moving off one side of the array appear on the opposite side. Forexample, those moving left
*off the array appear on the right side and those moving
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