//@code
objref r, hist, g
r = new Random()
r.binomial(20, .5)

g = new Graph()
g.size(0, 20, 0, 100)
hist = new Vector(20)
hist.plot(g)
for(i=0; i<500; i=i+1){
	j = r.repick()
	hist.x[j] = hist.x[j]+1
	g.flush()
	doNotify()
}