List <Expression> GetSummandExpressionsAll(string aExpression)
{
string _pattern = @"(?<VarName>[a-z])(\^(?<VarPow>\d+))?";
string _patternVar = String.Format(@"(?<Coeff>([-]?\d+(,\d+)?))?(?<Var>({0})*)", _pattern);
Regex _regexVar = new Regex(_patternVar);
MatchCollection _mcVar = _regexVar.Matches(aExpression);
List <Expression> _res = new List <Expression>();
for (int i = 0; i < _mcVar.Count; i++)
{
Match _m = _mcVar[i];
string _summ = _m.Value;
if (_summ != String.Empty)
{
GroupCollection _groups = _mcVar[i].Groups;
string _coeff = _groups["Coeff"].Value != String.Empty ? _groups["Coeff"].Value : "1";
Summand _summand = new Summand(Double.Parse(_coeff.Replace(" ", "")));
string _varsCapture = _groups["Var"].Value;
List <Variable> _vars = GetVariable(_varsCapture, _pattern);
_summand.AddVariableRange(_vars);
_summand.ToCanonical();
SummandExpression _exp = new SummandExpression(_m.Index, _m.Index + _m.Length - 1, _summand);
_res.Add(_exp);
}
}
return(_res);
}
public static Summand operator *(Summand a, Summand b)
{
Summand _res = new Summand(a.FCoeff * b.FCoeff);
List <Variable> _variablesMult = new List <Variable>(a.FVariables);
_variablesMult.AddRange(b.FVariables);
_res.FVariables = _variablesMult;
_res.ToCanonical();
return(_res);
}
public bool IsSimilarTo(Summand aVar)
{
this.ToCanonical();
aVar.ToCanonical();
if (this.FVariables.Count != aVar.FVariables.Count)
{
return(false);
}
for (int i = 0; i < this.FVariables.Count; i++)
{
if (this.FVariables[i] != aVar.FVariables[i])
{
return(false);
}
}
return(true);
}
public void AddSummand(Summand aSummand)
{
this.FSummands.Add(aSummand);
}
public SummandExpression(int aStart, int aEnd, Summand aSummand) :
base(aStart)
{
this.FEnd = aEnd;
this.FSummand = aSummand;
}