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m7 - Lecture C7 Trees Response to'Muddiest Part of the...

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Lecture C7: Trees Response to 'Muddiest Part of the Lecture Cards' (8 respondents) 1) Are there traversal algorithms for evaluating non-binary (m-ary) trees ? Yes there are. The traversal algorithms (Preorder, postorder, and inorder) shown in class all operated on binary trees. For general trees (including m-ary trees), the traversal algorithms are defined with meanings similar to their binary tree counterparts: The preorder traversal of a general tree, first visits the root of the tree, then performs a preorder traversal of each subtree from left to right. The postorder traversal of a general tree, first traverse the root’s subtrees from left to right and then visit the root. The Inorder traversal of a general tree does not have a natural definition. You can make up an arbitrary definition, e.g., visit the leftmost subtree in inorder ,then the root, then visit the remaining subtrees in inorder. However, inorder traversal is usually not used for general trees.

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