public static bool TestBinTree(BinTree tree, int x) // always true
{
if (tree == null)
return true;
tree.Add(x);
return tree.Contains(x);
}
private static void TestTree()
{
var tree = new BinTree <int>();
var tree2 = new BinTree <int>(10);
tree.Add(20);
tree2.Add(20);
Console.WriteLine(tree2.Contains(20));
Console.WriteLine(tree.Contains(10));
}
