class Array

Public Instance Methods

reduce_ranges() click to toggle source

# File lib/reduce_ranges.rb, line 4
def reduce_ranges
  raise TypeError unless all? { |el| el.is_a?(Fixnum) }

  results = []
  temp = [self[0]]
  self[1..-1].each do |e|
    temp << e && next if temp.last == e - 1
    results << (temp[1] ? (temp[0]..temp.last) : temp[0])
    temp = [e]
  end
  results << (temp[1] ? (temp[0]..temp.last) : temp[0])
end