public string HienDSKH()
{
string str = "";
DSKyHieu.ForEach(x => {
str += x.NoiDung + " ";
//x.Hien();
});
return(str);
}
private void TaoHauTo()
{
Stack <ToanTu> stack = new Stack <ToanTu>();
DSKyHieu.ForEach(x =>
{
if (x is SoHoc)
{
DSKetQua.Add(x);
}
else
{
ToanTu objTT = (ToanTu)x;
switch (objTT.Loai)
{
case LoaiKyHieu.DongNgoac:
while (stack.Peek().Loai != LoaiKyHieu.MoNgoac)
{
DSKetQua.Add(stack.Pop());
}
stack.Pop();
break;
case LoaiKyHieu.CongTru:
case LoaiKyHieu.NhanChia:
while (stack.Count > 0 && stack.Peek().LonHon(objTT))
{
DSKetQua.Add(stack.Pop());
}
break;
}
if (objTT.Loai != LoaiKyHieu.DongNgoac)
{
stack.Push(objTT);
}
}
});
while (stack.Count > 0)
{
DSKetQua.Add(stack.Pop());
}
}