ShiftArray $-$ A function that shifts the values in an array so that it begins a

specified number of positions from the current starting point.

Shifting values off one end of the array places them on the other

end so that no values are lost.

ShiftArray takes three arguments: a single$-$subscripted array of

integers, an integer holding the size of the array, and an integer

for the number of positions to move for the starting value.

Example:

Consider the array $x$ pictured below:

After the function call ShiftArray $(x,10,3)$; the array should

hold the values shown below:

Any integer for the shift is valid as moving past either end of

the array "wraps around" to the other end.

Example:

If the original array $y$ holds the values below:

After the function call ShiftArray $(y,10,-2)$; the array should

hold the values shown below:

Example:

If the original array $z$ holds the values below:

After the function call ShiftArray$($z$,7,11)$; the array should

hold the values shown below: