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Net 42

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By Team EasyExamNotes

CBSE NET JUNE 2012 PAPER II


Q. The post order traversal of a binary tree is DEBFCA. Find out the preorder traversal.


(A) ABFCDE
(B) ADBFEC
(C) ABDECF
(D) None of the above


Ans: (C)


Explanation: DFD – Inorder (Left,Root,Right), Preorder (Root,Left,Right), Postorder (Left,Right,Root). So, POSTORDER to BINARY TREE will like this.

Than BINARY TREE to PREORDER. Where PREORDER (Root, Left, Right) = ABDECF.

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