public DanhSachHinhHoc TimHinhTronMaxBanKinh()
{
DanhSachHinhHoc result = new DanhSachHinhHoc();
float max = MaxBanKinhHinhTron();
foreach (var item in ListHinhHoc)
{
if (item is HinhTron && ((HinhTron)item).BanKinh == max)
{
result.Them(item);
}
}
return(result);
}
public DanhSachHinhHoc TimHinhChuNhatMaxChieuDai()
{
DanhSachHinhHoc result = new DanhSachHinhHoc();
float max = MaxBanKinhHinhChuNhat();
foreach (var item in ListHinhHoc)
{
if (item is HinhChuNhat && ((HinhChuNhat)item).TinhChuVi() / ((HinhChuNhat)item).ChieuRong * 2 == max)
{
result.Them(item);
}
}
return(result);
}
public DanhSachHinhHoc TimHinhVuongMaxCanh()
{
DanhSachHinhHoc result = new DanhSachHinhHoc();
float max = MaxCanhHinhVuong();
foreach (var item in ListHinhHoc)
{
if (item is HinhVuong && ((HinhVuong)item).Canh == max)
{
result.Them(item);
}
}
return(result);
}
public DanhSachHinhHoc TimHinhChuNhatMinCV()
{
DanhSachHinhHoc result = new DanhSachHinhHoc();
float min = TimMinCVHinhChuNhat();
foreach (var item in ListHinhHoc)
{
if (item is HinhChuNhat && ((HinhChuNhat)item).TinhChuVi() == min)
{
result.Them(item);
}
}
return(result);
}
public DanhSachHinhHoc TimHinhTronMinDT()
{
DanhSachHinhHoc result = new DanhSachHinhHoc();
float min = TimMinDTHinhTron();
foreach (var item in ListHinhHoc)
{
if (item is HinhTron && ((HinhTron)item).TinhDienTich() == min)
{
result.Them(item);
}
}
return(result);
}
public DanhSachHinhHoc XoaHinhCVNhoNhat()
{
DanhSachHinhHoc result = new DanhSachHinhHoc();
float cvNhoNhat = TimMinCV();
WriteLine("Chu vi nho nhat la " + cvNhoNhat);
foreach (var item in ListHinhHoc)
{
if (item is HinhVuong && ((HinhVuong)item).TinhChuVi() != cvNhoNhat ||
item is HinhTron && ((HinhTron)item).TinhChuVi() != cvNhoNhat ||
item is HinhChuNhat && ((HinhChuNhat)item).TinhChuVi() != cvNhoNhat)
{
result.Them(item);
}
}
return(result);
}
public DanhSachHinhHoc XoaHinhDTNhoNhat()
{
DanhSachHinhHoc result = new DanhSachHinhHoc();
float dtNhoNhat = TimMinDT();
WriteLine("Dien tich nho nhat la " + dtNhoNhat);
foreach (var item in ListHinhHoc)
{
if (item is HinhVuong && ((HinhVuong)item).TinhDienTich() != dtNhoNhat ||
item is HinhTron && ((HinhTron)item).TinhDienTich() != dtNhoNhat ||
item is HinhChuNhat && ((HinhChuNhat)item).TinhDienTich() != dtNhoNhat)
{
result.Them(item);
}
}
return(result);
}
