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Well, I took most of it.

In fact, I likely took pretty much all of it.

It's been updated as you can see.

In the other thread.

I'm having a very hard time trying to figure out what he wants me to do with those tokens.

And how to evaluate the expressions.

I continue to update and I feel like I'm talking to a brick...

public abstract class Node
{

protected Node left, right, parent;
protected Object data;
protected ArrayList<Object> childrenHolder;

public Node(Object data, Node parent, Node left, Node ...

Ok, I'm thinking that perhaps for a + b * c

I do something like this:

OperandStack.push('+');
OperandStack.push('*');

OperatorStack.push(a);
OperatorStack.push(b);
OperatorStack.push(c);

PDF was updated.

https://blackboard.ilstu.edu/webct/urw/lc764539604011.tp764539626011/RelativeResourceManager/sfsid/857411743031

public abstract class Node
{

protected Node left, right, parent;
protected Object data;
protected ArrayList<Object> childrenHolder;

public Node(Object data, Node parent, Node left, Node ...

I have this, but I don't know how to make the OperatorNode class evaluate the expressions.


public class BST<T extends Comparable<T>>
{
private class Node<T>
{
private T data;
private...

Hey, is it legal to have switch structures within switch structures

c =this.getData();
switch(c)
{

case( ' ( ' )

bla bla bla;

Anybody home?

I see a class for a binary tree, but no way to evaluate its subtrees. Even if there are, I cannot understand how to do it.

should I create the expression tree class first before:

1. Create a...

This tree is a binary tree. That might be why. ;)

:-L

A non-leaf Node could have two non-leaf nodes, which then each have two non-leaf nodes, which then each have two non-leaf nodes and which...

Well, how do I do the evaulate method for OperatorNode? I don't know how to figure out the values in each subtree. It seems to involve recursion, but I can't figure it out at the moment.

So how do I keep track of the data at that Node?

:confused::confused::confused::confused:^:)^^:)^:-??:-??:-??:-??:-??

public abstract class Node
{

protected Node left, right, parent;
protected Object data;
protected ArrayList<Object> childrenHolder;

public Node(Object data, Node parent, Node left, Node ...

On getData() could I make it abstract and change the return type to Object?

Ok, so what about my getData() method? Make it abstract too?

It is currently returning a variable of type T.

Ok, if I don't need the generic, why not?

It's subclasses hold one particular type of data, but as that type is different, I cannot have a get Data method in my Node class. Are you suggesting I...

Ok, based on the pdf, am I doing this right?

I have no idea what to do with tokens? Never handled them before.

public abstract class Node <T>
{

protected Node<T> left, right, parent;
protected T data;
protected ArrayList<T> childrenHolder;

public Node(T data, Node<T> parent, Node<T> left, Node<T>...

I'm wondering if, based on the pdf assignment, I am doing this Node class right. I have a feeling I'm doing too much.

Can I have a class, an abstract class moreover, that has two subclasses as objects?

I think that this one may need recursion as well as Nodes.

I almost wish I could have Node itself keep track...