Question: (a) [1 points) We run PREORDERTREEWALK on a binary search tree where at each node we print the element stored. The elements are printed in

(a) [1 points) We run PREORDERTREEWALK on a binary search tree where at each node we print the element stored. The elements are printed in the order [7, 4, 2, 1,3,6, 5, 10, 8, 9, 11]. Give the BST that we ran PREORDERTREEWALK on. Briefly argue you answer. (b) (2 points] Given a binary tree with n nodes we wish to compute (and store) the height of each node in O(n) time total. Which treewalk should we base our algorithm on? Briefly explain your
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