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Gomer thinks we can solve this problem by using a preorder traversal. When each node u is processed, it simply verifies that the left child
Gomer thinks we can solve this problem by using a preorder traversal. When each node
u is processed, it simply verifies that the left childs key is strictly less than us key and us right
childs key is strictly greater than us key. Gomers solution, however, will not work. Provide a
counter example to demonstrate this and explain how it shows Gomer is wrong.
b points Design a correct algorithm that, given a root note in a binary tree with parent,
rightChild, leftChild, and key elements determines if it is a binary search tree or not. Fully
analyze your algorithm.
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