public void insert(double key, string val)
{
BSTNode itr = root;
BSTNode parent = null;
if (itr == null)
{
root = new BSTNode(key, val, parent);
return;
}
while (itr != null)
{
parent = itr;
if (itr.key >= key)
if (itr.left != null)
itr = itr.left;
else
{
itr.left = new BSTNode(key, val, parent);
return;
}
else
if (itr.right != null)
itr = itr.right;
else
{
itr.right = new BSTNode(key, val, parent);
return;
}
}
}
public BSTNode(double key, string val, BSTNode parent)
{
this.key = key;
this.value = val;
this.right = null;
this.left = null;
this.parent = parent;
}
public List<string> inOrderTraversal(BSTNode n, List<string> list)
{
if (n == null)
return list;
inOrderTraversal(n.left, list);
list.Add(n.value);
inOrderTraversal(n.right, list);
return list;
}