using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

    }

    public static TreeNode CreateMinimalBST(int[] sortedArray)

    {

        return CreateMinimalBST(sortedArray, 0, sortedArray.Length - 1);

    }

    public static TreeNode CreateMinimalBST(int[] sortedArray, int start, int end)

    {

        if(start > end)

            return null;

        int mid = (start + end) / 2;

        TreeNode root = new TreeNode(sortedArray[mid]);

        root.Left = CreateMinimalBST(sortedArray, start, mid - 1);

        root.Right = CreateMinimalBST(sortedArray, mid + 1, end);

        return root;

    }

}

​

​

public class TreeNode

{

    public int Data{get;set;}

    public TreeNode Left {get;set;}

    public TreeNode Right {get;set;}

    public TreeNode(int data)

    {

        this.Data = data;

    }

}