void Shift(int stackNum)
{
StackData stack = _stacks[stackNum];
if (stack.Size >= stack.Capacity)
{
int nextStack = (stackNum + 1) % NumberOfStacks;
Shift(nextStack); // make some room
stack.Capacity++;
}
for (int i = (stack.Start + stack.Capacity - 1) % TotalSize; // end of array
stack.IsWithinStack(i, TotalSize);
i = PreviousElement(i))
{
_buffer[i] = _buffer[PreviousElement(i)];
}
_buffer[stack.Start] = 0;
stack.Start = NextElement(stack.Start); // move start start
stack.Pointer = NextElement(stack.Pointer); // move stack pointer
stack.Capacity--; // return capacity to original
}
