bool CoChua(ThueBao tb)
{
for (int i = 0; i < length; i++)
{
if (a[i].soCMND == tb.soCMND)
{
return(true);
}
}
return(false);
}
public void SapXep(KieuSapXep k)
{
for (int i = 0; i < length - 1; i++)
{
for (int j = i + 1; j < length; j++)
{
if (KiemTraDieuKien(a[i], a[j], k) == 1)
{
ThueBao tam = a[i];
a[i] = a[j];
a[j] = tam;
}
}
}
}
private int KiemTraDieuKien(ThueBao thueBao1, ThueBao thueBao2, KieuSapXep k)
{
if (k == KieuSapXep.TangTheoHoTen)
{
return(thueBao1.hoTen.CompareTo(thueBao2.hoTen));
}
if (k == KieuSapXep.GiamTheoHoTen)
{
return(-thueBao1.hoTen.CompareTo(thueBao2.hoTen));
}
if (k == KieuSapXep.TangTheoNgaySinh)
{
return(thueBao1.ngaySinh.CompareTo(thueBao2.ngaySinh));
}
if (k == KieuSapXep.GiamTheoNgaySinh)
{
return(-thueBao1.ngaySinh.CompareTo(thueBao2.ngaySinh));
}
return(-1);
}
public void Them(ThueBao tb)
{
a[length++] = tb;
}
public void Them_TB(ThueBao x)
{
DS_TB.Add(x);
}