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kaityo256/sqrt.rb

Last active November 29, 2019 01:41
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The Square root of 2
Raw
sqrt.rb
def finda(r,s)
a = 1
a = a + 1 while a**2 + 2*s*a < r
a - 1
end
r = 2
a = Math.sqrt(r).to_i
r = r - a**2
s = a
50.times do
s = s * 10
r = r * 100
a = finda(r,s)
r = r - 2*s*a - a**2
s = s + a
v = s.to_s
puts v[0] + "." + v[1,v.size]
end
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$ ruby sqrt.rb
1.4
1.41
1.414
1.4142
1.41421
1.414213
1.4142135
1.41421356
1.414213562
1.4142135623
1.41421356237
1.414213562373
1.4142135623730
1.41421356237309
1.414213562373095
1.4142135623730950
1.41421356237309504
1.414213562373095048
1.4142135623730950488
1.41421356237309504880
1.414213562373095048801
1.4142135623730950488016
1.41421356237309504880168
1.414213562373095048801688
1.4142135623730950488016887
1.41421356237309504880168872
1.414213562373095048801688724
1.4142135623730950488016887242
1.41421356237309504880168872420
1.414213562373095048801688724209
1.4142135623730950488016887242096
1.41421356237309504880168872420969
1.414213562373095048801688724209698
1.4142135623730950488016887242096980
1.41421356237309504880168872420969807
1.414213562373095048801688724209698078
1.4142135623730950488016887242096980785
1.41421356237309504880168872420969807856
1.414213562373095048801688724209698078569
1.4142135623730950488016887242096980785696
1.41421356237309504880168872420969807856967
1.414213562373095048801688724209698078569671
1.4142135623730950488016887242096980785696718
1.41421356237309504880168872420969807856967187
1.414213562373095048801688724209698078569671875
1.4142135623730950488016887242096980785696718753
1.41421356237309504880168872420969807856967187537
1.414213562373095048801688724209698078569671875376
1.4142135623730950488016887242096980785696718753769
1.41421356237309504880168872420969807856967187537694

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