using System;

public class Program

{

    public static void Main()

    {

      int[] arr = new int[] {2, 899, 56, 9, 10, 22 };

      Console.WriteLine(MaxItem(arr));

    }

    public static int MaxItem(int[] arr)

    {

        int max = -1;

        return MaxItem(arr , max , 0);

    }

    public static int MaxItem(int[] arr ,int max , int i)

    {

        if(i >= arr.Length)return max;

        max = Math.Max(max,arr[i]);

        return MaxItem(arr , max , i+1);

​

    }

​

}