Question 4: Intersection

intersection

#Question 4: Intersection
def intersection(range1, range2)

  # range1 is range1.min, range2.min - add in 'maxes' if range1 encompasses range2
  r1_only = [range1[0], range2[0]]
  r1_only << [range2[1], range1[1]] if range1[1] > range2[1] 
 
  # both occurs at range1.max, range2.min if overlap - both = range2 if encompass - nil if no overlap
  both = [range2[0], range1[1]] if range1[1] < range2[1]
  both = range2 if range1[1] > range2[1]

  # range2 is range1.max, range2.max - or nil if no distinct range2
  r2_only = [range1[1], range2[1]] if range2[1] > range1[1]

  all = [r1_only, both, r2_only] # return all
end