csharp rotate sum array

                
                        int[] arr = Console.ReadLine().Split(' ').Select(int.Parse).ToArray();
int rotate = int.Parse(Console.ReadLine());
int[] sumResult = new int[arr.Length];

for (int i = 0; i < rotate; i++)
{
  int lastElement = arr[arr.Length - 1];

  for (int j = arr.Length - 1; j > 0; j--)
  {
    arr[j] = arr[j - 1];
  }
  arr[0] = lastElement;

  for (int w = 0; w < arr.Length; w++)
  {
    sumResult[w] += arr[w];
  }
}
Console.WriteLine(string.Join(" ", sumResult));