The following three are known to be the preorder, inorder and postorder…

GATE · 2008 · IT

The following three are known to be the preorder, inorder and postorder sequences of a binary tree. But it is not known which is which.

MBCAFHPYK

KAMCBYPFH

MABCKYFPH

Pick the true statement from the following.

A.
I and II are preorder and inorder sequences, respectively
B.
I and III are preorder and postorder sequences, respectively
C.
II is the inorder sequence, but nothing more can be said about the other two sequences
D.
II and III are the preorder and inorder sequences, respectively

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Correct answer: D

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