static void TestListDequeue()
{
DEQueue cQ = new DEQueue();
Console.Write("\nNow testing list function:\n\n");
cQ.AddLeft(33);
cQ.AddRight(43);
cQ.AddLeft(34);
cQ.AddRight(47);;
Console.Write("listing left to right:\n should be 34 33 43 47 \n");
Console.Write(" actually is " + cQ.ListLeftRight());
Console.Write("\nEnd of testing list functions\n\n");
}