mean without float conversion : Utility Method « Method « Ruby

1. Ruby
2. Method
3. Utility Method

mean without float conversion

def mean(array)
  array.inject(0) { |sum, x| sum += x } / array.size.to_f
end
def mean_without_float_conversion(array)
  array.inject(0) { |x, sum| sum += x } / array.size
end

require 'rational'
numbers = [Rational(2,3), Rational(3,4), Rational(6,7)]
puts mean(numbers)

puts mean_without_float_conversion(numbers)

 

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