/// <summary>
/// Check error for input
/// </summary>
/// <param name="_bigInteger1"></param>
/// <param name="_bigInteger2"></param>
/// <returns></returns>
public bool IsHaveError(ref BigInteger _bigInteger1, ref BigInteger _bigInteger2)
{
// Check syntax
if (m_string.Length != 2)
{
Console.WriteLine("Sai cu phap, Cu phap la : Add2N <SoThu1> <SoThu2>");
Console.WriteLine("*-----------------------------*");
return true; // Return having error
}
else
{
bool error = false; // Check error
Regex myRegex = new Regex(@"^\d{1,}$"); // Condition
// Check error for number 1
if (!myRegex.IsMatch(m_string[0]))
{
error = true; // Having error
Console.Write(m_string[0] + " ");
}
// Check error for number 1
if (!myRegex.IsMatch(m_string[1]))
{
error = true; // Having error
Console.Write(m_string[1] + " ");
}
if (error)
{
Console.WriteLine("Chua hop le");
Console.WriteLine("******************");
return true; // Return having error
}
}
Delete0InString(ref m_string[0]);
_bigInteger1.BInteger = ReverseString(m_string[0]);
Delete0InString(ref m_string[1]);
_bigInteger2.BInteger = ReverseString(m_string[1]);
return false; // None having error
}
static void Main(string[] args)
{
View view = new View(args);
BigInteger bigInteger1 = new BigInteger();
BigInteger bigInteger2 = new BigInteger();
Console.WriteLine("*++++++++++++++++++++*");
// Continue if have error
if (view.IsHaveError(ref bigInteger1, ref bigInteger2))
{
return; // Exit
}
else
{
//Print result
view.PrintResult(bigInteger1.BInteger, bigInteger2.BInteger, bigInteger1.Add2BigInteger(bigInteger2));
}
}
/// <summary>
/// Add 2 big integer number
/// </summary>
/// <param name="_bigInteger"> Number will be added</param>
/// <returns> result </returns>
public string Add2BigInteger(BigInteger _bigInteger)
{
StringBuilder result = new StringBuilder(); // Result of addition
// Return string is most shortest
int length = (BInteger.Length > _bigInteger.BInteger.Length)
? _bigInteger.BInteger.Length
: BInteger.Length;
// Save temp for addition
int temp = 0;
for (int i = 0; i < length; ++i)
{
// sum 2 number
int sum = Int32.Parse(m_bInteger[i].ToString()) +
Int32.Parse(_bigInteger.BInteger[i].ToString()) +
temp;
temp = sum / 10; // temp of addition
result.Insert(i, (sum % 10).ToString()); // Insert sum into result string
}
// Continue insert remain of longer string
if (BInteger.Length > length)
{
for (int i = length; i < BInteger.Length; ++i)
{
int sum = Int32.Parse(m_bInteger[i].ToString()) + temp;
temp = sum / 10;
result.Insert(i, (sum % 10).ToString());
}
// Add temp into result string
if (temp > 0)
{
result.Insert(BInteger.Length, temp.ToString());
}
}
else
{
// Continue insert remain of longer string
if (_bigInteger.BInteger.Length > length)
{
for (int i = length; i < _bigInteger.BInteger.Length; ++i)
{
int sum = Int32.Parse(_bigInteger.BInteger[i].ToString()) + temp;
temp = sum / 10;
result.Insert(i, (sum % 10).ToString());
}
// Add temp into result string
if (temp > 0)
{
result.Insert(_bigInteger.BInteger.Length, temp.ToString());
}
}
else // 2 string's length equal
{
// Add temp into result string
if (temp > 0)
{
result.Insert(length, temp.ToString());
}
}
}
return result.ToString(); // return string result
}
