//klasyfikacja tkestu do jego kraju
public void Classify()
{
ResetMatrix();
for (int x = 0; x < testArticles.Count; x++)
{
List <Neighbor> closestNeighbors = new List <Neighbor>();
for (int i = 0; i < trainingArticles.Count; i++)
{
double tmp = metric.CountValue(trainingArticles[i], testArticles[x]);
if (closestNeighbors.Count < k)
{
closestNeighbors.Add(new Neighbor(trainingArticles[i].GetPlace(), tmp));
continue;
}
//sortowanie - ostatni najgorszy
closestNeighbors = closestNeighbors.OrderBy(test => test.GetKnnValue()).ToList();
// wstarczy sprawdzic ostatni - jezeli ostatni jest mniejszy to zamiana
if (closestNeighbors[^ 1].GetKnnValue() > tmp)
