Direct sphere.py
From Werner KRAUTH
import random, math
nsamples = 100
for sample in xrange(nsamples):
x, y, z = (random.gauss(0.0, 1.0),
random.gauss(0.0, 1.0),
random.gauss(0.0, 1.0))
length = random.uniform(0.0, 1.0) ** (1.0 / 3.0) \
/ math.sqrt(x ** 2 + y ** 2 + z ** 2)
print x * length, y * length, z * length
