public override Question Generate(int? seed = null)
{
Random rnd;
if (seed == null)
{
rnd = new Random(System.DateTime.Now.Millisecond);
}
else
{
rnd = new Random(seed.GetValueOrDefault());
}
int xAns = rnd.Next(-10, 10);
int yAns = rnd.Next(-10, 10);
internalOneEquationGenerator q1;
internalOneEquationGenerator q2 = new internalOneEquationGenerator();
string qs1;
string qs2 = q2.Generate(xAns, yAns, rnd.Next());
do
{
q1 = new internalOneEquationGenerator();
qs1 = q1.Generate(xAns, yAns, rnd.Next());
} while (EquationLeftTotal(q1, xAns, yAns) == EquationLeftTotal(q2, xAns, yAns));
string qStr = qs1 + Environment.NewLine + qs2 ;
List<string> ansList = new List<string>();
ansList.Add("(" + xAns + ", " + yAns + ")");
ansList.Add("(" + (xAns + rnd.Next(-10, 10)) + ", " + (yAns + rnd.Next(-10, 10)) + ")");
ansList.Add("(" + (xAns + rnd.Next(-10, 10)) + ", " + (yAns + rnd.Next(-10, 10)) + ")");
ansList.Add("(" + (xAns + rnd.Next(-10, 10)) + ", " + (yAns + rnd.Next(-10, 10)) + ")");
return new Question(qStr, ansList, ansList[0]);
}
private int EquationLeftTotal(internalOneEquationGenerator q,int xAns,int yAns)
{
int LeftTotal = 0;
for (int i = 0; i < q.LeftTerms.Count; i++)
{
LeftTotal += q.LeftTerms[i].GetValue(xAns, yAns);
}
return LeftTotal;
}
