public override string ToString()
{
var result = new List <string>();
if (!Coefficient.Equals(NumberDecimal.One))
{
result.Add(Coefficient.ToString());
}
result.AddRange(Variables.Select(a => a.ToString()));
result.AddRange(Others.Select(a => "(" + a.ToString() + ")"));
return(string.Join("*", result));
}
public TermExpression(IValue coefficient, VariablePowExpression[] variablePows, VariableExpression[] variables, params IExpression[] others)
{
Coefficient = coefficient ?? new NumberDecimal(1, 0);
if (Coefficient.Equals(NumberDecimal.Zero))
{
return;
}
var variablesR = TermExpression.Multiply(variablePows, variables?.Select(a => (VariablePowExpression)a))?.ToList();
var othersR = new List <IExpression>();
if (others != null)
{
var result = new TermExpression(others);
Coefficient = Coefficient.Multiply(result.Coefficient);
variablesR.AddRange(result.Variables);
othersR.AddRange(result.Others);
}
Variables = Unify(variablesR);
Others = othersR.ToArray();
}