ruby 展平任意嵌套的数组

Posted 2021-05-16

def flatten_array(array)
  flattened_array = []
  array.each do |element|
    if element.kind_of?(Array)
      flatten_array(element).each do |sub_element|
        flattened_array << sub_element
      end
    else
      flattened_array << element
    end
  end
  return flattened_array
end