public static void main(String[] args) {
int n = 10;
StdDraw.setCanvasSize(160, 640);
StdDraw.setXscale(-1, n + 1);
StdDraw.setPenRadius(0.006);
double[] a = new double[n];
for (int i = 0; i < n; i++) a[i] = StdRandom.uniform(0.0, 1.0);
sort(a);
}
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]);
}