how to add varibale to list

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C#

hi i want to add value of a variable to a list and then change the value,
for example:

static List<int[]> list = new List<int[]>();

int[] piece = { 2, 6, 0, 7, 4, 1, 5, 3 };
list.Add(piece);

piece = ShuffleArray(piece);

list.Add(piece); ------> replace with last array!!!!!!!

static int[] ShuffleArray(int[] array)
{
Random r = new Random();
for (int i = array.Length; i > 0; i--)
{
int j = r.Next(i);
int k = array[j];
array[j] = array[i - 1];
array[i - 1] = k;
}
return array;
}



but when i change the value of piece the value of list will change.
please help me.