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Created November 12, 2013 03:25
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test for v2ex
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gistfile1.rb
def triangle(a, b, c)
raise TriangleError if [a,b,c].min <= 0
x, y, z = [a,b,c].sort
raise TriangleError if x + y <= z
[:equilateral,:isosceles,:scalene].fetch([a,b,c].uniq.size - 1)
end
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