public static void drawRandConn(int N, double p) {
StdDraw.setCanvasSize(512, 512);
StdDraw.setScale(-1.0, 1.0);
StdDraw.setPenRadius(.025);
double[][] d = new double[N][2];
for (int i = 0; i < N; i++) {
d[i][0] = Math.cos(2 * Math.PI * i / N);
d[i][1] = Math.sin(2 * Math.PI * i / N);
StdDraw.point(d[i][0], d[i][1]);
}
StdDraw.setPenRadius();
StdDraw.setPenColor(StdDraw.GRAY);
for (int i = 0; i < N - 1; i++)
for (int j = i + 1; j < N; j++)
if (StdRandom.bernoulli(p)) StdDraw.line(d[i][0], d[i][1], d[j][0], d[j][1]);
}
/** Draws this point to standard draw. */
public void draw() {
/* DO NOT MODIFY */
StdDraw.point(x, y);
}
// draw all points to standard draw
public void draw() {
for (Point2D point2D : root.subSet(LOWER, HIGHER)) {
StdDraw.point(point2D.x(), point2D.y());
}
}