static void Main()
{
int lenght = 4;
Nullable <int>[] array = new Nullable <int> [lenght];
var command = Console.ReadLine().Split(' ');
int elements = 0;
while (!command[0].Equals("end"))
{
if (elements == lenght)
{
lenght *= 2;
Nullable <int>[] biggerArray = new Nullable <int> [lenght];
for (int i = 0; i < array.Length; i++)
{
biggerArray[i] = array[i];
}
array = biggerArray.Clone() as int?[];
}
switch (command[0])
{
case "push":
elements = CommandPush(array, command, elements);
break;
case "pop":
elements = CommandPop(array, elements);
break;
case "clear":
elements = CommandClear(array, elements);
break;
case "removeAt":
elements = CommandRemoveAt(array, command, elements);
break;
}
command = Console.ReadLine().Split(' ');
}
Console.WriteLine(elements <= 0 ? "empty array" : string.Join(" ", array));
}
