static void Main(string[] args)
{
//TreeNode tn = new TreeNode(1);
//TreeNode tn3 = new TreeNode(3);
//tn3.children.Add(new TreeNode(5));
//tn3.children.Add(new TreeNode(6));
//tn.children.Add(tn3);
//tn.children.Add(new TreeNode(2));
//tn.children.Add(new TreeNode(4));
//tn.Preorder1(tn);
//tn.MaxArea(new int[] { 1, 8, 6, 2, 5, 4, 8, 3, 7 });
BinaryTree tree = new BinaryTree();
tree.preorder1();
tree.isvalid();
// new sum().sum3();
// 定义一个无参数、int类型返回值的委托
//Func<int> func = () =>
//{
// Thread.Sleep(2000);
// return DateTime.Now.Day;
//};
//// 输出委托同步调用的返回值
//Console.WriteLine($"func.Invoke()={func.Invoke()}");
//// 委托的异步调用
//IAsyncResult asyncResult = func.BeginInvoke(p =>
// {
// Console.WriteLine(p.AsyncState);
// }, "异步调用返回值");
//// 输出委托异步调用的返回值
//Console.WriteLine($"func.EndInvoke(asyncResult)={func.EndInvoke(asyncResult)}");
//new randombox().Compute();
//new Bsearch().getindex();
//new LIS().Get();
//sort.quick_sort();
//sort.mergeSort();
//sort.insertSort();
//Stack<int> st = new Stack<int>();
//st.Push(1);
//st.Push(3);
//var aaa = st.Pop();
//HashSet<int> hs = new HashSet<int>();
//hs.Add(1);
//hs.Remove(1);
//// new LIS().lis(new int[] { 2, 1, 6, 3, 5, 4, 8, 7, 9 });
var node = new IntNode(2);
node.append(4);
node.append(7);
node.append(3);
node.append(1);
node.append(9);
// var newnode = new IntNode(3);
// node.insert(newnode, 5);
node.ReverseList();
Console.WriteLine("Hello World!");
}