Module: MathStatisticsArrayMethods::IntegerFactorial

Included in:
Integer
Defined in:
lib/math_statistics_array_methods/integer_factorial.rb

Overview

Will add the factorial method to the integers.

Instance Method Summary collapse

Instance Method Details

#factorial ⇒ Object

Classic factorial.



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# File 'lib/math_statistics_array_methods/integer_factorial.rb', line 11

def factorial
  f = 1
  for i in 1..self do
    f *= i
  end
  return f
end