Just wondering what the difference is. I don't think I need to post my code, but basically for my assignment, I have stubs for a binary search tree. There are nodes created in the constructor, and among them are:

Node parent
Node predecessor
Node sucessor
Node right
Node left

Is there a point in predecessor and sucessor? Seems to me it would work with just parent, right, and left, no?

Thanks :D

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Yes, it would work - you are correct. See here for definitions of predecessor and successor.

Do not forget also the

Node root

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