GetDeltaProblemType: Get Delta problem type function
Description
This function apply Test to identify where are the solution located. We have mainly 3 situations for k > 2 and 2 for k = 2. For k > 2 we have:
DN2 = No estimators in the boundary.
DN1 = Some estimator in the boundary and global agreement imaginary.
DN0 = Any other case
For k = 2 we have:
DA0 = Some estimator in the boundary.
DA1 = Any other case