module Proxinacci
Public Instance Methods
closest_fibonacci()
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# File lib/proxinacci.rb, line 2 def closest_fibonacci # Don't allow any zero or negative values return nil if self <= 0 x, y = 0, 1 while y < self # Progress through the Fibonacci sequence while y is less # than the number calling the method x, y = y, x + y end # At this point x is the largest Fibonacci number smaller than the # number calling the method return x end