Hamamatsu.rb#52 FibonacciNumber

FibonacciNumber.rb

class FibonacciNumber
	def get x
		case x
		when 0, 1
			return 1
		else
			get(x - 2) + get(x - 1)
		end
	end
end

if __FILE__ == $0
	p FibonacciNumber.new.get(10)
	p FibonacciNumber.new.get(50)
end

require "spec_helper"
require "fib"

describe "FibonacciNumber spec" do 
	it "0の場合、1" do 
		expect(FibonacciNumber.new.get(1)).to eq 1
	end
	it "1の場合、1" do 
		expect(FibonacciNumber.new.get(1)).to eq 1
	end
	it "2の場合、2" do 
		expect(FibonacciNumber.new.get(2)).to eq 2
	end
	it "3の場合、3" do 
		expect(FibonacciNumber.new.get(3)).to eq 3
	end
	it "5の場合、5" do 
		expect(FibonacciNumber.new.get(5)).to eq 8
	end
	it "8の場合、21" do 
		expect(FibonacciNumber.new.get(8)).to eq 34
	end
	it "9の場合、55" do 
		expect(FibonacciNumber.new.get(9)).to eq 55
	end
	it "10の場合、55" do 
		expect(FibonacciNumber.new.get(10)).to eq 89
	end
	# it "99の場合、" do 
	# 	expect(FibonacciNumber.new.get(10)).to eq 55
	# end
end