triangle.rb

# 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
  if a == 0 || b == 0 || c == 0
  	raise TriangleError
  end
  #array = [a,b,c].sort
  #if (array[0] + array[1]) <= array[2] || (array[1] + array[2]) <= array[0] || (array[2] + array[0]) <= array[1]
  #	raise TriangleError 
  #end
  if (a + b) <= c || (b + c) <= a || (c + a) <= b
  	raise TriangleError
  end
  if a == b && b == c
  	:equilateral
  elsif a == b || a == c || b == c
  	:isosceles
  elsif a != b && a !=c && b != c
  	:scalene
  end
end

# Error class used in part 2.  No need to change this code.
class TriangleError < StandardError
end