Question

what is the general logical principle behind deletion of an item from the middle of a binary tree?

Answer 1

It's just a process of re-pairing the parent and child nodes based on a series of logical steps. I'd go into more detail about the specific algorithm, but I feel somehow that this is a homework problem.

Answer 2

Yeah I remember having to do an assignment like this :P BST's are featheres at times. God speed