我正在學習用

Java編寫代碼,我已經學習了java編程的遞歸部分.我理解了遞歸方法的基礎知識,并且我正在嘗試編寫填充希爾伯特曲線(和Levy C曲線)的空間,到目前為止,一切都順利進行,直到實際的遞歸部分.我在提出遞歸方法時遇到了麻煩,想知道是否有人可以幫助我.我也知道它需要在DrawHilbert方法中.

public class HilbertCurve extends JPanel {

int N;

/**

* Constructor for Hilbert Curve

*/

public HilbertCurve ()

{

Scanner myKeyboard = new Scanner(System.in);

System.out.println("Enter an integer number to indicate the level of recursive depth: ");

N = myKeyboard.nextInt();

// Create a JFrame - a window that will appear on your screen

JFrame f = new JFrame();

// Tells the program to quit if you close the window

f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

// Puts your drawing into the window (the JFrame)

f.add(new JScrollPane(this));

// Changes the size of the window on the screen

f.setSize(600, 600);

// Changes where the window will appear on your screen

f.setLocation(200, 200);

// Makes the window appear

f.setVisible(true);

}

public void setupHilbert (Turtle turtle)

{

turtle.penup();

turtle.setXY(0,0);

// draw a simple rectangle that is 100x50 pixels

turtle.pendown();

drawHilbert(turtle, N);

}

public void drawHilbert(Turtle turtle, int n) {

if (n == 0) return;

turtle.changeColor(Color.GREEN);

turtle.changeWidth(2);

turtle.left(-90);

turtle.forward(100);

turtle.left(90);

turtle.forward(100);

turtle.left(90);

turtle.forward(100);

turtle.left(-90);

turtle.penup();

}

protected void paintComponent(Graphics g)

{

Turtle turtle = new Turtle((Graphics2D) g, getBounds());

turtle.setHeadingMode(Turtle.DEGREE);

setupHilbert(turtle);

}

// plot a Hilbert curve of order N

public static void main(String[] args)

{

Scanner myKeyboard = new Scanner(System.in);

HilbertCurve test = new HilbertCurve();

}

}

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