Skip to main content

You are not logged in. Your edit will be placed in a queue until it is peer reviewed.

We welcome edits that make the post easier to understand and more valuable for readers. Because community members review edits, please try to make the post substantially better than how you found it, for example, by fixing grammar or adding additional resources and hyperlinks.

1
  • $\begingroup$ Thanks, that looks very useful. I'd had that thought too, of transforming the list to a string for manipulation, then back to a Tree, but my nascent solution is neither complete nor as neat as yours. I await a solution which does not require stringification ! $\endgroup$ Commented Jun 6, 2021 at 15:40