TreeNode(TreeNode left, TreeNode right, int item)
{
this.next = new Next();
this.next.left = left;
this.next.right = right;
this.item = item;
}
TreeNode(int item)
{
this.item = item;
this.next = null;
}
TreeNode(int item)
{
this.item = item;
this.next = null;
}
