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Link: http://codepad.org/gbpyRRAB    [ raw code | output | fork ]

Ruby, pasted on Jun 22: 
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require "bigdecimal"

#n = gets.to_i
n = 2
max = BigDecimal::new("5.0") # 初期値適当
min = BigDecimal::new("0.0")
for i in 1..20
	mid = (min + max) / 2
	puts mid
	midsq = mid * mid * mid
	if midsq < n
		min = mid
	else
		max = mid
	end
	puts mid
end


Output: 
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0.25E1
0.25E1
0.125E1
0.125E1
0.1875E1
0.1875E1
0.15625E1
0.15625E1
0.140625E1
0.140625E1
0.1328125E1
0.1328125E1
0.12890625E1
0.12890625E1
0.126953125E1
0.126953125E1
0.1259765625E1
0.1259765625E1
0.12646484375E1
0.12646484375E1
0.126220703125E1
0.126220703125E1
0.1260986328125E1
0.1260986328125E1
0.12603759765625E1
0.12603759765625E1
0.126007080078125E1
0.126007080078125E1
0.1259918212890625E1
0.1259918212890625E1
0.12599945068359375E1
0.12599945068359375E1
0.125995635986328125E1
0.125995635986328125E1
0.1259937286376953125E1
0.1259937286376953125E1
0.12599277496337890625E1
0.12599277496337890625E1
0.125992298126220703125E1
0.125992298126220703125E1


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