public static CaptchaNumbers HideData(CaptchaNumbers res)
{
Random random = new Random(Guid.NewGuid().GetHashCode());
List <int> temp = new List <int> {
0, 1, 2
};
int r_convert = temp[random.Next(0, temp.Count)];
switch (r_convert)
{
case 0:
res.num1 = "(" + ConvertToWords.ToWords(Convert.ToInt32(res.num1)) + ")";
break;
case 1:
res.num2 = "(" + ConvertToWords.ToWords(Convert.ToInt32(res.num2)) + ")";
break;
case 2:
res.sum = "(" + ConvertToWords.ToWords(Convert.ToInt32(res.sum)) + ")";
break;
}
temp.Remove(r_convert);
int r_encode = temp[random.Next(temp.Count)];
switch (r_encode)
{
case 0:
res.val = res.num1;
res.num1 = "blank";
break;
case 1:
res.val = res.num2;
res.num2 = "blank";
break;
case 2:
res.val = res.sum;
res.sum = "blank";
break;
}
return(res);
}
public static CaptchaNumbers GetNewCaptcha()
{
CaptchaNumbers res = null;
Random random = new Random(Guid.NewGuid().GetHashCode());
//for (int i = 0; i < 10000; i++)
{
int random_op = random.Next(0, 3);
enum_operators op = (enum_operators)random_op;
//MathOp.operators op = (MathOp.operators.DIVIDE);
int Num1 = 0;
int Num2 = 0;
int SUM = 0;
switch (op)
{
case enum_operators.ADD:
{
Num1 = random.Next(1, 10);
Num2 = random.Next(1, 10);
SUM = Num1 + Num2;
}
break;
case enum_operators.SUBTRACT:
{
Num1 = random.Next(1, 10);
Num2 = random.Next(1, 10);
if (Num1 < Num2) //swap numbers if num1 < num2
{
Num2 = Num2 + Num1;
Num1 = Num2 - Num1;
Num2 = Num2 - Num1;
}
SUM = Num1 - Num2;
}
break;
case enum_operators.DIVIDE:
{
//get 2 random numbers
Num2 = random.Next(10, 99);
Num1 = random.Next(2, 10);
Num2 = Num2 / Num1;
Num1 = Num2 * Num1;
SUM = Num1 / Num2;
//swap SUM with Num2
SUM = SUM * Num2;
Num2 = SUM / Num2;
SUM = SUM / Num2;
}
break;
case enum_operators.MULTIPLY:
{
Num1 = random.Next(1, 10);
Num2 = random.Next(1, 10);
SUM = Num1 * Num2;
}
break;
}
res = new CaptchaNumbers()
{
num1 = Convert.ToString(Num1),
opr = strOp[(int)op],
num2 = Convert.ToString(Num2),
sum = Convert.ToString(SUM)
};
}
return(HideData(res));
}