You are implementing a binary search tree class from scratch, which, in addition to insert, find, and delete, has a method getRandomNode() which returns a random node from the tree. All nodes should be equally likely to be chosen. Design and implement an algorithm for getRandomNode, and explain how you would implement the rest of the methods.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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: You are implementing a binary search tree class from scratch, which, in addition
to insert, find, and delete, has a method getRandomNode() which returns a random node
from the tree. All nodes should be equally likely to be chosen. Design and implement an algorithm
for getRandomNode, and explain how you would implement the rest of the methods. 

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