Construct BST

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Given a sorted integer array A of size n, which contains all unique elements. You need to construct a balanced BST from this input array. Return the root of constructed BST.

Note: If array size is even, take first mid as root.

Input format:
The first line of input contains an integer, which denotes the value of n. The following line contains n space separated integers, that denote the values of array.
Output Format:
The first and only line of output contains values of BST nodes, printed in pre order traversal.
Constraints:
Time Limit: 1 second
Sample Input 1:
7
1 2 3 4 5 6 7
Sample Output 1:
4 2 1 3 6 5 7

 


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