.
public static string MetniBelliBirKarakterdenBolSiralamayiTersCeviripYazdir(string metin, char krk, string ayirici = null)
{
string[] dizi = metin.Split(krk);
List<string> l = new List<string>();
l.AddRange(metin.Split(krk));
l.Reverse();
StringBuilder sbd = new StringBuilder();
for (int i = 0; i < l.Capacity; i++)
{
sbd.AppendLine(l[i] + ayirici);
}
return sbd.ToString();
}