#!/usr/bin/env ruby

require 'pp'

BIG_NUMBER = 32768

# Get data from a file, turn it in to a float, and find the max
data = File.readlines('random.txt')
max = -BIG_NUMBER
for n in (0 ... data.length)
  data[n] = data[n].chomp.to_f
  if data[n] > max
    max = data[n].to_i + 1 # max is ceil(max(data[n]))
  end
end

# Create the empty histogram
histogram = []
for n in (0 ... max)
  histogram.push(0)
end

# Fill the histogram
for n in (0 ... data.length)
  histogram[data[n].to_i] += 1
end

# Print the histogram
pp histogram
puts
for n in (0 ... max)
  puts "*" * histogram[n]
end