public int addLnode(double num, int Pid)
{
// This for numrical value .
MathNode tmp = new MathNode(num);
tmp.ParentId = Pid;
int NodeId = Nodes.Add(tmp); // tmp is no longer needed
tmp = (MathNode)Nodes[Pid]; // set the left child of node's parent.
tmp.Lchild = NodeId; // tmp is copied by refernce so any will be applied .
return NodeId;
}
public int addLnode(char varname, int Pid)
{
// this for var name .
MathNode tmp = new MathNode(varname);
tmp.ParentId = Pid;
int NodeId = Nodes.Add(tmp); // tmp is no longer needed
tmp = (MathNode)Nodes[Pid]; // set the left child of node's parent.
tmp.Lchild = NodeId;
return NodeId;
}
public MathNode Clone()
{
MathNode tmp = new MathNode();
tmp.Lchild = this.Lchild;
tmp.Rchild = this.Rchild;
tmp.ParentId = this.ParentId;
tmp.Op = this.Op;
tmp.Num = this.Num;
tmp.Varname = this.Varname;
return tmp;
}
public int addRnode(char varname, int Pid)
{
// this for var name .
MathNode tmp = new MathNode(varname);
tmp.ParentId = Pid;
int NodeId = Nodes.Add(tmp); // tmp is no longer needed
tmp = (MathNode)Nodes[Pid]; // set the left child of node's parent.
tmp.Rchild = NodeId; // tmp is copied by refernce so any will be applied .
return NodeId;
}
public int addLnode(Operator op, int Pid)
{
// this for Operator.
MathNode tmp = new MathNode(op);
tmp.ParentId = Pid;
int NodeId = Nodes.Add(tmp); // tmp is no longer needed
tmp = (MathNode)Nodes[Pid]; // set the left child of node's parent.
tmp.Lchild = NodeId; // tmp is copied by refernce so any will be applied .
return NodeId;
}
private void Build(string[] exp, string varname = "x")
{
Stack<int> Id_stack = new Stack<int>();
for (int i = 0; i < exp.Length; i++)
{
if (exp[i] != null)
{
MathNode tmp = new MathNode();
double res;
if (double.TryParse(exp[i], out res)) // if it was a double
{
tmp.Create(res);
}
else if (varname.Contains(exp[i])) // if it was a var name
{
char t = Convert.ToChar(exp[i]);
tmp.Create(t);
}
else
{ //check if it an operator
int abs_bracket_num = 0;// for check for ||
switch (exp[i])
{
case "+":
tmp.Create(Operator.Sum);
break;
case "-":
tmp.Create(Operator.Sub);
break;
case "*":
tmp.Create(Operator.Mult);
break;
case "/":
tmp.Create(Operator.Div);
break;
case "^":
tmp.Create(Operator.Pow);
break;
case "%":
tmp.Create(Operator.Mod);
break;
case "|":
if (abs_bracket_num == 0)
{
abs_bracket_num++;
tmp.Create(Operator.Abs);
}
break;
case "sin":
tmp.Create(Operator.Sin);
break;
case "cos":
tmp.Create(Operator.Cos);
break;
case "tan":
tmp.Create(Operator.Tan);
break;
case "cot":
tmp.Create(Operator.Cot);
break;
case "sinh":
tmp.Create(Operator.Sinh);
break;
case "cosh":
tmp.Create(Operator.Cosh);
break;
case "tanh":
tmp.Create(Operator.Tanh);
break;
case "asin":
tmp.Create(Operator.ASin);
break;
case "acos":
tmp.Create(Operator.Acos);
break;
case "atan":
tmp.Create(Operator.Atan);
break;
case "ln":
tmp.Create(Operator.Ln);
break;
case "log":
tmp.Create(Operator.Log);
break;
case "sqrt":
tmp.Create(Operator.Sqrt);
break;
case "e":
tmp.Create(Operator.Exp);
break;
}
}//end checking of operator
if (tmp.Op != Operator.None)
{
/*if it was an op put two of stack node as
* left and right child
* set thire Pid
* finally push the new tree to the stack
*/
if (Id_stack.Count > 0)
{
tmp.Rchild = Id_stack.Pop();
}
if (Id_stack.Count > 0)
{
tmp.Lchild = Id_stack.Pop();
}
int Nid = this.Nodes.Add(tmp);
if (tmp.Rchild != -1)
{
this[tmp.Rchild].ParentId = Nid;
}
if (tmp.Lchild != -1)
{
this[tmp.Lchild].ParentId = Nid;
}
Id_stack.Push(Nid);
if (tmp.ParentId == -1)
{
this.Root = Nid;
}
}
else
{
//creat a new node and push it to the stack
int Nid = this.Nodes.Add(tmp);
Id_stack.Push(Nid);
}
}
}
}
public MathBinaryTree(double num)
{
MathNode tmp = new MathNode(num);
Nodes.Add(tmp);
}
public void Clone(MathBinaryTree Original)
{
this.Nodes.Clear();
foreach (MathNode Node in Original.Nodes)
{
if (Node != null)
{
MathNode t = new MathNode();
t = Node.Clone();
this.Nodes.Add(t);
}
}
this.Root = Original.Root;
}