NRZ Encoding，nrzencoding,package nrz;

NRZ Encoding，nrzencoding,package nrz;

package nrz;import java.applet.*;import java.awt.*;import java.util.Scanner;public class NRZ extends Applet {    private static final long serialVersionUID = 1L;    int w, h, EX, EY;    public void init() {        w = Integer.parseInt(getParameter("width"));        h = Integer.parseInt(getParameter("height"));        EY = (int) ((h - 30) / 2);        EX = (int) ((w - 30) / 4);    }    final static int n = 1000;    public void paint(Graphics g) {        int y = h / 2;        g.setColor(Color.black);        g.drawLine(0, y, w, y);// 画出X轴        g.drawLine(10, 0, 10, h);// 画出Y轴        g.drawLine(w - 10, y - 10, w, y);        g.drawLine(w - 10, y + 10, w, y);// 画X轴的箭头        g.drawLine(10, 0, 0, 10);        g.drawLine(10, 0, 20, 10);// 画Y轴的箭头        int lenx, leny;        lenx = (w - 30) / 10;        leny = (h - 30) / 10;        int Int = 1;        for (int i = 0; i < 10; i++) {            g.drawLine(10 + i * lenx, y, 10 + i * lenx, y - 10);        }        for (int i = 1; i < 10; i++) {            String ss = String.valueOf(Int);            // double类型转换为String类型            g.drawString(ss, 10 + i * lenx - 3, y + 20);            Int = Int + 1;        }// 画X轴坐标        Int = 1;        for (int i = 1; i < 2; i++) {            Int = Int + 1;            g.drawString("+V", 20, y - 3 * leny);            g.drawString("-V", 20, y + 3 * leny + 10);        }// 画Y轴坐标        g.drawString("0", 10 + 2, y + 20);        g.drawString("X", w - 10, y - 20);        g.drawString("Y", 30, 10);        g.setColor(Color.red);        g.setColor(Color.red);        System.out                .println("Please enter a string of 0s & 1s as a signal with space between every two numbers:");        Scanner sc = new Scanner(System.in);        String str = sc.nextLine();        String[] s = str.split(" ");        Integer[] c = new Integer[s.length];        for (int p = 0; p <= s.length; p++) {            c[p] = Integer.parseInt(s[p]);            System.out.println(c[p]);            int k = (int) Math.pow(-1, c[p]);            g.drawLine(10 + p * lenx, y + 3 * leny * k, 10 + (p + 1) * lenx, y                    + 3 * leny * k);        }        new NRZ();    }}//该片段来自于http://byrx.net