Question 4 12 Points Unlike Previous Questions Assume Bnodes Parent Pointers Given Bnode U Q37210062

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Question A.4 (12 Points) Unlike the previous questions, we now assume that our BNodes have parent pointers. Given a BNode u, let binTree(u) denote the set of nodes that we can reach from u using all three BNode pointers (parent, left, right). Please write a routine boolean check (u) that binTree(u) is a valid binary tree (i.e., all the pointers are correctly set up. You must use a helper method boolean

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