public ExamNode examTypeOne()
{
Random rndQus = new Random();
Random rndChot = new Random();
Random rndChof = new Random();
ExamNode no = new ExamNode();
no.type = ExamNode.CHOICE;
List<int[]> list = getEdges(2);
if (list.Count < 2) return null;
int c = 0;
foreach (int[] l in list)
{
if (l[1] - l[0] - 1 < 3)
{
c++;
}
}
if (c == list.Count) return null;
int not = rndQus.Next(0, list.Count);
int nof = rndQus.Next(0, list.Count);
while (list[not][1] - list[not][0] - 1< 3 || not == nof)
{
not = rndQus.Next(0, list.Count);
}
int index = new Random().Next(4);
no.ansIndex = index;
no.qustion = "ข้อใดไม่ใช่ " + Regex.Replace(smartLines[list[not][0]],"[*]", "") + " ของ " + smartLines[0];
no.choice = new string[4];
no.choice[index] = Regex.Replace(smartLines[rndChot.Next(list[nof][0] + 1, list[nof][1] - 1)], "[*]", "");
index = (++index) % 4;
for (int i = 0; i < 3; i++) {
do
{
no.choice[index] = Regex.Replace(smartLines[rndChof.Next(list[not][0] + 1, list[not][1] - 1)], "[*]", "");
} while (no.choice[index] == no.choice[(index + 1) % 4] ||
no.choice[index] == no.choice[(index + 2) % 4] ||
no.choice[index] == no.choice[(index + 3) % 4]);
index = (++index)%4;
}
return no;
}
public ExamNode examTypeTwo()
{
Random rndQus = new Random();
ExamNode no = new ExamNode();
no.type = ExamNode.OBJ;
List<int[]> list = getEdges(2);
if (list.Count < 1) return null;
int number = rndQus.Next(0, list.Count);
no.qustion = "จงยกตัวอย่าง " + Regex.Replace(smartLines[list[number][0]], "[*]", "") + " ของ " + smartLines[0] + " มา 1 อย่าง";
int size = list[number][1] - list[number][0] - 1;
no.choice = new string[size];
int c = 0;
for (int i = list[number][0] + 1; i <= list[number][1] - 1; i++)
{
no.choice[c++] = Regex.Replace(smartLines[i], "[*]", "");
}
return no;
}
private void btnGenQuest_Click(object sender, EventArgs e)
{
int rndQus = new Random().Next(2);
for (int i = 0; i < 2; i++) {
if (rndQus == 0) // choice
{
no = exam.examTypeOne();
if (no != null) {
lblAnswer.Visible = true;
txtAnswer.Visible = false;
btnCheck.Visible = false;
grpChoice.Visible = true;
txtQuestion.Text = no.qustion;
radAnswer1.Text = no.choice[0];
radAnswer2.Text = no.choice[1];
radAnswer3.Text = no.choice[2];
radAnswer4.Text = no.choice[3];
radAnswer1.Checked = false;
radAnswer2.Checked = false;
radAnswer3.Checked = false;
radAnswer4.Checked = false;
return;
} else {
rndQus = 1;
continue;
}
}
else
{ // OBJ
no = exam.examTypeTwo();
if (no != null) {
lblAnswer.Visible = true;
txtAnswer.Visible = true;
btnCheck.Visible = true;
grpChoice.Visible = false;
txtQuestion.Text = no.qustion;
return;
} else {
rndQus = 0;
continue;
}
}
}
MessageBox.Show("Can't generate question");
}