gistfile1.txt

int[] Num2 = new int[141]; //array for random numbers
// Fill the array with numbers from 0 to 140
for (int i = 0; i < Num2.Length; i++) {
	Num2[i] = i;
}

// Shuffle Array
Random rnd = new Random((int)DateTime.Now.Ticks); // seed the random number generator based on the time so you don't get the same sequence repeatedly
for (int i = Num2.Length; i > 1; i--) {
	// Pick random element to swap
	int j = rnd.Next(1, 141);
	// Swap
	int temp = Num2[j];
	Num2[j] = Num2[i - 1];
	Num2[i-1] = temp;
}

// Output shuffled array to console - this block can be removed
for (int i = 1; i < Num2.Length; i++) {
	Console.WriteLine("Element {0} = {1}", i, Num2[i]);
}

// Check for doubles (there can't be, but always good to double check - this block can be removed
for (int i = 1; i < Num2.Length - 1; i++) {
	for (int j = i+1; j < Num2.Length; j++) {
		if (Num2[i] == Num2[j])
			Console.WriteLine("---------------------Duplicate found {0} = {1}", Num2[i], Num2[j]);
		else
			Console.WriteLine("No Duplicate {0} != {1}", Num2[i], Num2[j]);
	}
}