private IEnumerable <IList <char> > FindPeptides(double mass, char[] ignoreAA)
{
int index = (int)(mass / Precision);
string[] combinations = emptyArray;
if (Dictionary.ContainsKey(index))
{
combinations = Dictionary[index].Split(',');
}
foreach (string comb in combinations)
{
bool keepIt = true;
foreach (char c in comb)
{
if (ignoreAA.Contains(c))
{
keepIt = false;
}
}
if (keepIt)
{
double SeqMass = AminoAcidMasses.GetMass(comb);
if (Math.Abs(SeqMass - mass) < Precision)
{
foreach (IList <char> str in new Permutations <char>(new List <char>(comb), GenerateOption.WithoutRepetition))
{
yield return(str);
}
}
}
}
}
public List <string> GetPermutations(double mass)
{
List <string> results = new List <string>();
int index = (int)(mass / Precision);
string[] combinations = emptyArray;
if (Dictionary.ContainsKey(index))
{
combinations = Dictionary[index].Split(',');
}
foreach (string comb in combinations)
{
double SeqMass = AminoAcidMasses.GetMass(comb);
if (Math.Abs(SeqMass - mass) < Precision)
{
foreach (IList <char> str in new Permutations <char>(new List <char>(comb), GenerateOption.WithoutRepetition))
{
results.Add(string.Concat(str));
}
}
}
return(results);
}
