/*
 * Write class SwapPosition which has method swap.
 * This method swaps the positions of its two shape
 * arguments.
 *
 * Test this is your main method. That is, create a
 * red square and black circle. Then swap their positions
 * using your method.
 *
 * Can your swap method be used to swap the position of any
 * pair of Shapes?
 *
 * Bonus: Draw a 5 x 5 grid of blue circles (ie)
          * * * * *
          * * * * *
          * * * * *
          * * * * *
          * * * * *
 */