private int TimAPTuaDeMax(DanhSachAnPham a)
{
int max = int.MinValue;
foreach (var item in a.dsap)
{
if (item is Sach)
{
Sach s = (Sach)item;
if (s.TuaDe.Length > max)
{
max = s.TuaDe.Length;
}
}
if (item is TapChi)
{
TapChi tc = (TapChi)item;
if (tc.TuaDe.Length > max)
{
max = tc.TuaDe.Length;
}
}
}
return(max);
}
public DanhSachAnPham HienThiAPTuaDeMax(DanhSachAnPham a)
{
DanhSachAnPham kq = new DanhSachAnPham();
int max = TimAPTuaDeMax(a);
foreach (var item in a.dsap)
{
if (item is Sach)
{
Sach s = (Sach)item;
if (s.TuaDe.Length == max)
{
kq.Them(item);
}
}
if (item is TapChi)
{
TapChi tc = (TapChi)item;
if (tc.TuaDe.Length == max)
{
kq.Them(item);
}
}
}
return(kq);
}
public int TimSLBVMax()
{
int max = int.MinValue;
foreach (var item in dsap)
{
if (item is TapChi)
{
TapChi tc = (TapChi)item;
if (tc.SoBaiViet > max)
{
max = tc.SoBaiViet;
}
}
}
return(max);
}
public DanhSachAnPham TCSLBVMax(DanhSachAnPham a)
{
DanhSachAnPham ds = new DanhSachAnPham();
ds = DSTC(a);
int max = ds.TimSLBVMax();
DanhSachAnPham kq = new DanhSachAnPham();
foreach (var item in ds.dsap)
{
if (item is TapChi)
{
TapChi tc = (TapChi)item;
if (tc.SoBaiViet == max)
{
kq.Them(item);
}
}
}
return(kq);
}