Write a program that takes an integer N from the command line, builds a random BST of size N, then enters into a loop where it deletes a random key (using the code delete(select(StdRandom.uniform(N)))) and then inserts a random key, iterating the loop N 2 times. After the loop, measure and print the average length of a path in the tree (the internal path length divided by N, plus 1). Run your program for N = 102, 103, and 10 4 to test the somewhat counterintuitive hypothesis that this process increases the average path length of the tree to be proportional to the square root of N. Run the same experiments for a delete() implementation that makes a random choice whether to use the predecessor or the successor node.

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
Section: Chapter Questions
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Write a program that takes an integer N from the
command line, builds a random BST of size N, then enters into a loop where it deletes
a random key (using the code delete(select(StdRandom.uniform(N)))) and then
inserts a random key, iterating the loop N 2 times. After the loop, measure and print the
average length of a path in the tree (the internal path length divided by N, plus 1). Run
your program for N = 102, 103, and 10 4 to test the somewhat counterintuitive hypothesis that this process increases the average path length of the tree to be proportional to
the square root of N. Run the same experiments for a delete() implementation that
makes a random choice whether to use the predecessor or the successor node.

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