Sometimes you need to move from a tree node to its parent. To do this, a binary tree
Chapter 24, Problem 16(choose chapter or problem)
Sometimes you need to move from a tree node to its parent. To do this, a binary tree node would need a reference to its parent. You then would be able to traverse a path from a leaf to the root. Redesign the node used in a binary tree so that each one has a reference to its parent as well as to its left child and right child. What methods will need to be changed?
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