tasks a-s

2013-04-10 23:57:08 -07:00 · 2013-04-10 23:57:08 -07:00 · b83f433714
commit b83f433714
parent 47bf37c096
12433 changed files with 156208 additions and 123 deletions
--- a/Task/Plot-coordinate-pairs/Java/plot-coordinate-pairs.java
+++ b/Task/Plot-coordinate-pairs/Java/plot-coordinate-pairs.java
@ -0,0 +1,89 @@
+import java.awt.*;
+  import java.awt.event.*;
+  import java.awt.geom.*;
+  import javax.swing.JApplet;
+  import javax.swing.JFrame;
+  public class Plot2d extends JApplet {
+    double[] xi;
+    double[] yi;
+    public Plot2d(double[] x, double[] y) {
+        this.xi = x;
+        this.yi = y;
+    }
+    public static double max(double[] t) {
+        double maximum = t[0];
+        for (int i = 1; i < t.length; i++) {
+            if (t[i] > maximum) {
+                maximum = t[i];
+            }
+        }
+        return maximum;
+    }
+    public static double min(double[] t) {
+        double minimum = t[0];
+        for (int i = 1; i < t.length; i++) {
+            if (t[i] < minimum) {
+                minimum = t[i];
+            }
+        }
+        return minimum;
+    }
+    public void init() {
+        setBackground(Color.white);
+        setForeground(Color.white);
+    }
+    public void paint(Graphics g) {
+        Graphics2D g2 = (Graphics2D) g;
+        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
+                RenderingHints.VALUE_ANTIALIAS_ON);
+        g2.setPaint(Color.black);
+        int x0 = 70;
+        int y0 = 10;
+        int xm = 670;
+        int ym = 410;
+        int xspan = xm - x0;
+        int yspan = ym - y0;
+        double xmax = max(xi);
+        double xmin = min(xi);
+        double ymax = max(yi);
+        double ymin = min(yi);
+        g2.draw(new Line2D.Double(x0, ym, xm, ym));
+        g2.draw(new Line2D.Double(x0, ym, x0, y0));
+        for (int j = 0; j < 5; j++) {
+            int interv = 4;
+            g2.drawString("" + (j * (xmax - xmin) / interv + xmin), j * xspan / interv + x0 - 10, ym + 20);
+            g2.drawString("" + (j * (ymax - ymin) / interv + ymin), x0 - 20 - (int) (9 * Math.log10(ymax)),
+ ym - j * yspan / interv + y0 - 5);
+            g2.draw(new Line2D.Double(j * xspan / interv + x0, ym, j * xspan / interv + x0, ym + 5));
+            g2.draw(new Line2D.Double(x0 - 5, j * yspan / interv + y0, x0, j * yspan / interv + y0));
+        }
+        for (int i = 0; i < xi.length; i++) {
+            int f = (int) ((xi[i] - xmin) * xspan / (xmax - xmin));
+            int h = (int) (((ymax - ymin) - (yi[i] - ymin)) * yspan / (ymax - ymin));
+            g2.drawString("o", x0 + f - 3, h + 14);
+        }
+        for (int i = 0; i < xi.length - 1; i++) {
+            int f = (int) ((xi[i] - xmin) * xspan / (xmax - xmin));
+            int f2 = (int) ((xi[i + 1] - xmin) * xspan / (xmax - xmin));
+            int h = (int) (((ymax - ymin) - (yi[i] - ymin)) * yspan / (ymax - ymin));
+            int h2 = (int) (((ymax - ymin) - (yi[i + 1] - ymin)) * yspan / (ymax - ymin));
+            g2.draw(new Line2D.Double(f + x0, h + y0, f2 + x0, h2 + y0));
+        }
+    }
+    public static void main(String args[]) {
+        JFrame f = new JFrame("ShapesDemo2D");
+        f.addWindowListener(new WindowAdapter() {
+            public void windowClosing(WindowEvent e) {
+                System.exit(0);
+            }
+        });
+        double[] r = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        double[] t = {2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.09};
+        JApplet applet = new Plot2d(r, t);
+        f.getContentPane().add("Center", applet);
+        applet.init();
+        f.pack();
+        f.setSize(new Dimension(720, 480));
+        f.show();
+    }
+  }