shape.java

来自「国外的数据结构与算法分析用书」· Java 代码 · 共 33 行

/**	A shape with a position. */
public class Shape
{
	/**	x and y coordinantes of the position of the shape. */
	public int x, y;

	/**	Go to the position newX and newY. 
		Analysis: Time = O(1) */
	public void goPosition(int newX, int newY)
	{
		x = newX;
		y = newY;
	}

	/**	Shift the position of the shape by shiftX and shiftY. 
		Analysis: Time = O(1) */
	public void shift(int shiftX, int shiftY)
	{
		x = x + shiftX;
		y = y + shiftY;
	}

	/**	A string of blanks used to indent nested shapes. */
	public static String indent = "";

	/**	String representation of the position of the shape. 
		Analysis: Time = O(1) */
	public String toString() 
	{
		return indent + "  Position: " + x + ", " + y + "\n";
	}
}