Print Binary Tree Structure with its contents in C++

Given a binary tree, write an efficient algorithm to print binary tree structure in standard output.


Print Binary Tree            Print Binary Tree

For example, binary tree to the left can be displayed as binary tree to the right programmatically. Below code serves as an excellent helper function to binary tree problems for printing the tree.


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I used GraphViz and implement the Reingold-Tilford algorithm to place the nodes neatly. I did this to plot k-d trees and red-black trees.