public bool SmallerThan(string compare)
{
StringInt reversed = new StringInt(compare);
return(reversed.GreaterThan(this.value));
}
public void Subtract(string reducer)
{
//Console.WriteLine("Called subtract with argument " + reducer + " and value " + this.GetValue());
if (!this.isNegative)
{
if (reducer[0] != '-')
{
//(+) - (+)
//Don't change anything
}
else
{
//(+) - (-)
reducer = reducer.TrimStart('-');
this.Add(reducer);
return;
}
}
else
{
if (reducer[0] != '-')
{
//(-) - (+)
this.isNegative = false;
this.Add(reducer);
this.isNegative = true;
return;
}
else
{
//(-) - (-)
//Don't change anything
}
}
//Make sure the first number is greater than the reducer
StringInt temp = new StringInt(reducer.TrimStart('-'));
if (temp.GreaterThan(this.value.TrimStart('-')))
{
string tempVal = this.GetValue();
this.Set(reducer);
reducer = tempVal;
this.isNegative = !this.isNegative;
}
reducer = reducer.TrimStart('-');
int numLength = (reducer.Length > this.value.Length) ? reducer.Length : this.value.Length;
numLength++;
string num = this.value;
short c = 0;
string revertedResult = String.Empty;
for (int i = 1; i <= numLength; i++)
{
short a = 0, b = 0;
try
{
a = Convert.ToInt16(num[num.Length - i].ToString());
}
catch (IndexOutOfRangeException) { }
try
{
b = Convert.ToInt16(reducer[reducer.Length - i].ToString());
}
catch (IndexOutOfRangeException) { }
int result = Convert.ToInt16(a) - (Convert.ToInt16(b) + c);
c = 0;
if (result < 0)
{
c++;
result += 10;
}
revertedResult += result.ToString();
}
//Revert string
char[] resultCharArr = revertedResult.ToCharArray();
Array.Reverse(resultCharArr);
this.value = new string(resultCharArr).TrimStart('0');
if (this.value.Length == 0)
{
this.Set("0");
}
}