public void SecondArray_Success()
{
int[] arr = { 9, 6, 4, 2, 3, 5, 7, 0, 1 };
var sol = new MissingNumber(arr);
var result = sol.GetMissingNumner();
Assert.AreEqual(8, result);
}
public void NullOremptyArray_Success()
{
int[] arr = null;
var sol = new MissingNumber(arr);
var result = sol.GetMissingNumner();
Assert.AreEqual(-1, result);
}
public void FirstArray_Success()
{
int[] arr = { 3, 0, 1 };
var sol = new MissingNumber(arr);
var result = sol.GetMissingNumner();
Assert.AreEqual(2, result);
}