Coin throw binomial distribution histogram
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object Main extends App {
val trials = 1000
val throws = 10
val maxBarSize = 50
val dist = 0 :: (for (i <- 1 to trials) yield {
val nh = Seq.fill(throws)(scala.util.Random.nextInt(2))
val ab = nh.sum
for (i <- 0 to throws) yield if (ab == i) 1 else 0
}).transpose.map(_.sum).toList
val max = dist.max
dist.foreach(n => {
val size = (n*maxBarSize/max)
val prob = n / trials.toDouble
if (size==0) print(".") else print("x"*size)
println(s" $prob")
})
}
Scala
INFO