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Choose the correct option.
The post order traversal fo a binary tree is DEBFCA. Find out the pre order traversal.
AABFCDE
BABDECF
CADBFEC
DNone of the above
Answer: Option (Login/Signup)
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STEP-BY-STEP
First Convert Post Order to Inorder...
It simply in ascending order i.e. A, B, C, D, E, F.
Then convert this inorder to pre-order by drawing the tree.
Pre-Order=Root-Left-Right
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TRICK
Option B is correct
Because,
A
B C
D E F
Post order:[left-right-data]:DEBFCA
Pre order:[data-left-right]:ABDECF
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