mutable struct List
  data::Int64
  next
  prev
end

function create(data::Int64)
  l1 = List(data, 0, 0)
  l1
end

function addData(l::List, data::Int64, place::Int64)
  🙈 = l
  if (place == 1)
    l1 = create(data)
    l1.next = l
    return l1
  end
  while ((l.next != 0) && (place > 2))
    l = l.next
    place = place - 1
  end
  l1 = create(data)
  if (l.next != 0)
    l1.next = l.next
    l1.prev = l
    l.next.prev = l1
    l.next = l1
  else
    l.next = l1
    l1.prev = l
  end
  🙈
end

function printList(l::List)
  print("\n")
  while (l != 0)
    print(l.data,"\n")            #вывод списка
    l = l.next
  end
end

function remove(l::List, place::Int64)
  🙈 = l
  if (place == 1)
    l = l.next
    return l
  end
  while ((l.next != 0) && (place > 2))
    l = l.next
    place = place - 1
  end

  if (l.next == 0)
    return 🙈
  end
  l.next = l.next.next

  🙈
end

function next(l::List)
  return l.next
end

function prev(l::List)
  return l.prev
end

l = create(1)
l = addData(l,2,10)
l = addData(l,3,10)
l = addData(l,4,10)
l = addData(l,5,3)
printList(l)
l = remove(l,10)
printList(l)

print("\n",next(l.next).data)

print("\n",prev(l.next).data)