How to use

nextGaussian

method

in

org.apache.commons.math3.random.MersenneTwister

  public static void main (String... args) {
    System.out.println("Testing histogram store with normal distribution, mean 0");
    Histogram h = new Histogram("Normal");

    MersenneTwister mt = new MersenneTwister();

    IntStream.range(0, 1000000).map(i -> (int) Math.round(mt.nextGaussian() * 20 + 2.5)).forEach(h::add);

    h.displayHorizontal();
    System.out.println("mean: " + h.mean());
  }
}

/**
 * @return the next pseudorandom, Gaussian ("normally") distributed double value with mean 0.0
 * and standard deviation 1.0 from this random number generator's sequence.
 */
public double nextGaussian() { return this.myPrg.nextGaussian(); }

  public static void main (String... args) {
    System.out.println("Testing histogram store with normal distribution, mean 0");
    Histogram h = new Histogram("Normal");

    MersenneTwister mt = new MersenneTwister();

    IntStream.range(0, 1000000).map(i -> (int) Math.round(mt.nextGaussian() * 20 + 2.5)).forEach(h::add);

    h.displayHorizontal();
    System.out.println("mean: " + h.mean());
  }
}

  public static void main (String... args) {
    System.out.println("Testing histogram store with normal distribution, mean 0");
    Histogram h = new Histogram("Normal");

    MersenneTwister mt = new MersenneTwister();

    IntStream.range(0, 1000000).map(i -> (int) Math.round(mt.nextGaussian() * 20 + 2.5)).forEach(h::add);

    h.displayHorizontal();
    System.out.println("mean: " + h.mean());
  }
}