public void Problem6Test()
{
var p6 = new Problem6();
var s1 = p6.SumOfSquares(Enumerable.Range(1, 10).Select(x => x));
var s2 = p6.SquareOfSum(Enumerable.Range(1, 10).Select(x => x));
Assert.AreEqual(s2 - s1, 2640);
s1 = p6.SumOfSquares(Enumerable.Range(1, 100).Select(x => x));
s2 = p6.SquareOfSum(Enumerable.Range(1, 100).Select(x => x));
Assert.AreEqual(s2 - s1, 25164150);
}
static void Main()
{
int number = 100;
long sumOfSquares, squareOfSum;
Problem6 obj = new Problem6();
sumOfSquares = obj.SumOfSquares(number);
squareOfSum = obj.SquareOfSum(number);
long difference = squareOfSum - sumOfSquares;
Console.WriteLine(difference);
Console.ReadKey();
}