Binary Search Tree

Cancelled Posted Sep 4, 2015 Paid on delivery
Cancelled Paid on delivery

Suppose you have some data keys sorted in an array and you want to construct a balanced binary search tree from them. Assume a tree node representation TreeNode that includes instance variables key, left, and right.

a) Write pseudocode (or Java if you wish) for an algorithm that constructs the tree and returns the root node. (We won't worry about making the enclosing BinaryTree class instance.) You will need to use methods for making a new TreeNode, and for setting its left and right children.

Hints: First, identify the array location of the key that would have to be the root of the balanced BST. Now think about how BinarySearch works on the array. Which item does it access first in any given subarray it is called with? Using a similar strategy a simple recursive algorithm is possible.

b) What is the Θ cost to construct the tree? How does the expected runtime of BinarySearch on the array compare to the expected runtime of search in the tree you just constructed?

Thank you,

Dan

Algorithm Binary Analysis Java Mathematics

Project ID: #8400234

About the project

23 proposals Remote project Active Sep 4, 2015

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