Merging Treenodes

Question

Does anyone know of an algorithm that will merge treenodes in the following way?

treeA
   \\ child a
          \\node(abc)
   \\ child b
          \\node(xyz         


        

Answer 1

Well, once I actually took the time to think about it, the solution turns out to be far more simple than I anticipated. (I've posted the critical part of the code below)

   private TreeNode DoMerge(TreeNode source, TreeNode target) {
        if (source == null || target == null) return null;

        foreach (TreeNode n in source.Nodes) {
            // see if there is a match in target
            var match = FindNode(n, target.Nodes); // match paths
            if (match == null) { // no match was found so add n to the target
                target.Nodes.Add(n);
            } else { 
                // a match was found so add the children of match 
                DoMerge(n, match);
            }

        }
        return target;

    }

Still interested to know if someone has a better solution?