public void Insert()
{
string malop, tenlop; int siso;
//nhap ma ko trung
NodeL tgl = new NodeL();
bool ok = true;//mặc dịnh ma ko trung
do
{
ok = true;
Console.Write("nhap ma lop: ");
malop = Console.ReadLine();
tgl = this.ds;
while (tgl != null)
{
if (string.Compare(malop, tgl.L.malop) == 0)
{
ok = false; break;
}
tgl = tgl.link;
}
}while(!ok);
Console.Write("nhap ten lop: ");
tenlop = Console.ReadLine();
siso = 0;
NodeL tg = new NodeL();
tg.L = new Lop(malop, tenlop, siso); //???
ghitep(tg);
tg.link = null;
tg.link = ds;
ds = tg;
}
public void hoanvi(NodeL p, NodeL q)
{
NodeL tg = new NodeL();
tg.L = p.L;
p.L = q.L;
q.L = tg.L;
}
public void ghitep(NodeL tg)
{
StreamWriter fw = File.AppendText("Lop.txt");
fw.WriteLine();
fw.Write("{0}#{1}#{2}", tg.L.malop, tg.L.tenlop, tg.L.siso);
fw.Close();
}
public void doctep()
{
StreamReader fr = File.OpenText("lop.txt");
ds = null; m = 0;
NodeL tg;
string s;
string[] con; //cac truong DL
s = fr.ReadLine(); //doc dong dau=> duoc ban ghi dau tien
if (s != null)
{
con = new string[3];
while (s != null)//lan luot doc het tep
{
if (s.Length > 0)
{
con = s.Split('#');
tg = new NodeL(); tg.L = new Lop();
tg.L.malop = con[0];
tg.L.tenlop = con[1];
tg.L.siso = int.Parse(con[2]);
//them TT lop vua doc tu tep vao DS lop hoc ds
m++;
if (ds == null)
{
ds = tg;
}
else
{
tg.link = ds;
ds = tg;
}
s = fr.ReadLine();
}
}
}
else
{
Console.WriteLine("tep rong!!!");
}
Console.WriteLine("Du lieu vua doc duoc tu tep LOP.TXT nhu sau:");
hienthi();
fr.Close();
}
int m; //so lop trong truong
public void hienthi()
{
NodeL tg = new NodeL(); tg = this.ds;
Console.WriteLine("Malop\tTenlop\tSiso");
if (tg != null)
{
while (tg != null)
{
Console.WriteLine("{0}\t{1}\t{2}", tg.L.malop, tg.L.tenlop, tg.L.siso);
tg = tg.link;
}
}
else
{
Console.WriteLine("Danh sách trong");
}
}
public void Thongke()
{
StreamWriter ftk;
if (File.Exists("Thongkekhoi.txt"))
{
ftk = File.AppendText("Thongkekhoi.txt");
}
else
{
ftk = File.CreateText("Thongkekhoi.txt");
}
int d10, d11, d12;
d10 = d11 = d12 = 0;
NodeL tg = this.ds;
while (tg.link != null)
{
if (tg.L.malop.IndexOf("1215") >= 0)
{
d12++;
}
if (tg.L.malop.IndexOf("1316") >= 0)
{
d11++;
}
if (tg.L.malop.IndexOf("1417") >= 0)
{
d10++;
}
tg = tg.link;
}
Console.WriteLine("So lop khoi 10 : {0} ", d10);
Console.WriteLine("So lop khoi 11 : {0} ", d11);
Console.WriteLine("So lop khoi 12 : {0} ", d12);
DateTime dt = new DateTime();
ftk.WriteLine("Thoi diem thong ke: {0}/{1}/{2}", dt.Day, dt.Month, dt.Year);
ftk.WriteLine("So lop khoi 10 : {0} ", d10);
ftk.WriteLine("So lop khoi 11 : {0} ", d11);
ftk.WriteLine("So lop khoi 12 : {0} ", d12);
ftk.Close();
}