public static LongNumber Copy(LongNumber MyList1)
{
LongNumber temp = new LongNumber();
for (int i = 0; i < MyList1.Length; i++)
{
temp.Push(MyList1[i]);
}
return(temp);
}
public static LongNumber operator -(LongNumber number1, LongNumber number2)
{
if (number1 < number2)
{
return(null);
}
if (number1 == number2)
{
return(new LongNumber(0));
}
LongNumber result = new LongNumber(0);
for (int i = 0; i < number1.Length; i++)
{
if (i < number1.Length - 1)
{
result.Push(0);
(result)[i + 1] = (result)[i + 1] - 1;
(result)[i] = (result)[i] + 10 + number1[i];
}
else
{
result[i] = result[i] + number1[i];
}
if (i < number2.Length)
{
result[i] = result[i] - number2[i];
}
if (result[i] / 10 > 0 && i < number1.Length - 1)
{
(result)[i + 1] = (result)[i + 1] + 1;
result[i] = result[i] % 10;
}
}
int j = result.Length - 1;
while (result[j] <= 0 && j > 0)
{
result.Pop();
j--;
}
return(result);
}
