public class GeometricGenerator {    

    public static void main (String[] argv)
    {
        int numTrials = 100000;

        // Geometric parameter.
        double p = 0.6;

        int m = 5;  // Limit for the purpose of testing.

        // Generate regular histogram.
        double[] counts = new double [m];
        for (int n=0; n<numTrials; n++) {
            int k = generateNext (0.6); 
            if (k < m) {
                counts[k] ++;
            }
        }

        // Make into proportions.
        double[] probEst = new double [m];
        for (int k=1; k<m; k++) {
            probEst[k] = counts[k] / numTrials;
            double t = Math.pow (1-p,k-1) * p;
            System.out.println ("Estimate of Pr[X=" + k + "]: " + probEst[k] + "   theory: " + t);
        }
    }
    

    static int generateNext (double p)
    {
        // INSERT YOUR CODE HERE.
    }

}