private static int[] rndArr(int length)
{
int[] intArr = new int[length];
System.Collections.ArrayList myList = new System.Collections.ArrayList();
Random rnd = new Random();
while (myList.Count < length)
{
int num = rnd.Next(0, length);
if (!myList.Contains(num))
myList.Add(num);
}
for (int i = 0; i < length; i++)
{
intArr[i] = (int)myList[i];
}
return intArr;
}

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