// Erika Wolfe
// TreeNode objects stores a single node of a binary tree of values.

public class TreeNode<E> {
    public E data; // data stored at this node
    public TreeNode<E> left; // reference to left subtree
    public TreeNode<E> right; // reference to right subtree

    // Constructs a leaf node with the given data.
    public TreeNode(E data) {
        this(data, null, null);
    }

    // Constructs a leaf or branch node with the given data and links.
    public TreeNode(E data, TreeNode<E> left, TreeNode<E> right) {
        this.data = data;
        this.left = left;
        this.right = right;
    }
}