min_hop_count

arr = [2, 4, 67, 0, 12, 7]


def reach_end arr
  current_max_index = arr[0]
  hop_count = 0
  last_index_of_array = arr.size - 1

  puts "=-"*5
  puts "CURRENT_MAX_INDEX : #{current_max_index}"
  puts "=-"*5
  while(current_max_index < last_index_of_array)
     hop_count += 1
    if last_index_of_array <= current_max_index
      break
    else
      puts current_max_index = arr[1..current_max_index].max
    end
  end
  puts hop_count + 1
end

reach_end(arr)