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triangle.rb
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triangle.rb
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# Triangle Project Code.
# Triangle analyzes the lengths of the sides of a triangle
# (represented by a, b and c) and returns the type of triangle.
#
# It returns:
# :equilateral if all sides are equal
# :isosceles if exactly 2 sides are equal
# :scalene if no sides are equal
#
# The tests for this method can be found in
# about_triangle_project.rb
# and
# about_triangle_project_2.rb
#
def triangle(a, b, c)
# WRITE THIS CODE
sides = [a, b, c]
#lines for pass test in about_triangle_2.rb
raise TriangleError if sides.min <= 0
raise TriangleError if sides.max * 2 >= [a, b, c].reduce(:+)
sides.uniq!
if sides.count == 1
return :equilateral
elsif sides.count == 2
return :isosceles
else
return :scalene
end
end
# Error class used in part 2. No need to change this code.
class TriangleError < StandardError
end