To arrange a binary search tree in ascending order, we need

To arrange a binary search tree in ascending order, we need
| To arrange a binary search tree in ascending order, we need

A. Post order traversal only 

B. In order traversal only 

C. Pre order traversal only

D. Post order traversal and Pre order traversal only

Please scroll down to see the correct answer and solution guide.

Right Answer is: B

SOLUTION

Random binary search tree

Post-order traversal is 23, 18, 27, 25, 10, 60, 80, 70, 30.

In-order traversal traversal is 10, 18, 23, 25, 27, 30, 60, 70, 80

Preorder traversal is 30, 10, 25, 18, 23, 27, 70, 60 ,80 

Therefore, to arrange a binary search tree in ascending order, we need In order traversal only