each from both sides : Array Extension « Array « Ruby

1. Ruby
2. Array
3. Array Extension

each from both sides

class Array
 def each_from_both_sides()
    front_index = 0
    back_index = self.length-1
    while front_index <= back_index
      yield self[front_index]
      front_index += 1
      if front_index <= back_index
    yield self[back_index]
        back_index -= 1
      end
    end
  end
end

%w{1,2,3,4,5}.each_from_both_sides { |x| puts x }

 

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