private void button_LeetCodeMedium_Click(object sender, EventArgs e)
{
Medium = new Medium();
//Medium.NumTrees(5);
//var result = Medium.MaxDepth2(Medium.GetTreeNode5());
//Medium.MaxProfit(new int[] { 7, 1, 5, 3, 6, 4 });
//var preorder = new int[] { 3, 9, 20, 15, 7 };
//var inorder = new int[] { 9, 3, 15, 20, 7 };
//var result = Medium.BuildTree(preorder, inorder);
//Medium.Flatten(Medium.GetTreeNode5());
Medium.CopyRandomList(Medium.GetNodes());
return;
}