SDE - 1

Given a binary search tree of integers containing 'N' nodes. You have also been given an integer X.

Your task is to find the inorder successor and predecessor of the given X. Formally, print an array/list containing the inorder predecessor and successor in the same order.

For Example:

For the BST given below:

The inorder predecessor of 6 is 4.
The inorder successor of 6 is 7.
The inorder predecessor of 10 is 8.
The inorder successor of 10 is 13.

Note:

If there is no inorder predecessor or successor of 'X', then add -1 to the answer vector in its place.

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2) 1 is not a prime number.

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