population_dynamics

population_dynamics.rb

# testing the 'rand' function
# sum = 0
# 10000.times {
#   sum += rand(2)
# }
# puts sum

list = []
100000.times do
  family = []
  family.push(rand(2)) until family.last == 1
  list << family
end

population = list.flatten
sum = population.inject(&:+)
puts "population: #{population.length}" 
puts "male: #{sum}"
puts "female: #{population.length - sum}"
puts "f/m ratio: #{(population.length - sum) / sum.to_f}"