none
Input:
N = 5
arr[] = {40,30,35,80,100}
Output: 35 30 100 80 40
Explanation: PreOrder: 40 30 35 80 100
InOrder: 30 35 40 80 100
Therefore, the BST will be:
40
/ \
30 80
\ \
35 100
Hence, the postOrder traversal will
be: 35 30 100 80 40