Survey Results - Can you, without looking it up, write code to convert any Binary Search Tree to a Balanced Binary Search Tree?

I've never needed anything like this in my long career as a developer...

I know that some libraries I use implement BTrees to do stuff Wink | ;)

but never ever in my 40 years coder life did I implement one.
That's what we use libraries for, isn't it ?

Not since college homework

Exactly

if you've ever needed any kind of set/map/dictionary collection, it's probably using a self-balancing binary tree under the hood.

Way back in the '80s, I wrote my own implementation of a balanced BST in Pascal, using the algorithm I found in Knuth. If I had to, I could do it today by re-reading the book.

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I'd have to look up what exactly a Balanced tree was before I started - it's just been too long since I needed to know that for exams, and I've not had to create even a BST once since I left Uni.

I still think it's important to learn them though - so at least you know they exist if you do ned them at some point in your career, and can then try to remember how to implement one.

I just checked what a BBST is, and now I remember. I did it a few times at Uni, and I could do it in about twenty minutes or so including testing. Maybe half an hour - setup of the node structure and sample data for testing is a little time consuming.

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OriginalGriff wrote:
it's just been too long since I needed to know that for exams, and I've not had to create even a BST once since I left Uni.

I had not even to create one during studies...

OriginalGriff wrote:
o at least you know they exist if you do ned them at some point in your career, and can then try to remember how to implement one.

I know that they exist, but had never need them (yet)

M.D.V.

If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?
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Option	Votes	%
Yes I can, and every developer should be able to as well	13	1.69
Yes, I can, but it's not really that important	38	4.94
I did it for an interview question and have never done it since.	15	1.95
I knew how to once, but the details are fuzzy	139	18.08
Maybe, probably, not 100% sure	97	12.61
No,. I don't think I could	278	36.15
I don't even know what a Binary Search Tree is, let alone a balanced one	189	24.58
Total	769	100%