Given an array [11, 3, 7, 1], this will compute how many steps it takes in order to make every element the same value. [6,6,6,6]

equalization_steps.rb

def equalization_steps(a)
  array, steps = a, 0

  begin
    a.each_with_index do |v, i|
      if v > a[ (i + 1) % a.length ]
        array[i] -= 1
      else
        array[i] += 1
      end
    end

    steps += 1
  end while array.uniq.size != 1

  steps
end

equalization_steps([11, 3, 7, 1])