public static void Main()
int[] nums = new int[50];
Random rand = new Random();
for (int i = 1; i < nums.Length-1; i++){
nums[i] = rand.Next(-100, 100);}
nums[0]=nums[nums.Length-1];
nums[nums.Length-1]=test;
foreach( var item in nums)
Console.WriteLine(item.ToString()+ " ");