The post-order traversal of a binary tree is O P Q R S T. Then possible pre-order traversal will be ________ a) T Q R S O P b) T O Q R P S c) T Q O P S R d) T Q O S P R

C++ Programming: From Problem Analysis to Program Design
8th Edition
ISBN:9781337102087
Author:D. S. Malik
Publisher:D. S. Malik
Chapter18: Stacks And Queues
Section: Chapter Questions
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The post-order traversal of a binary tree is O P Q R S T. Then possible pre-order traversal will be ________
a) T Q R S O P
b) T O Q R P S
c) T Q O P S R
d) T Q O S P R

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