public static CoFactorInfo GetCoFactor(SymbolMatrix symIn, int Column)
{
CoFactorInfo cfi = new CoFactorInfo();
cfi.Sign = (int)Math.Pow(-1, Column + 1);
SymbolVector col = symIn[Column - 1];
cfi.CoFactor = col[0];
List <Symbol> symList = new List <Symbol>();
for (int rowCount = 1; rowCount < symIn.Rows; rowCount++)
{
for (int colCount = 0; colCount < symIn.Columns; colCount++)
{
if (colCount + 1 != Column)
{
symList.Add(symIn[rowCount, colCount]);
}
}
}
cfi.Minor = new SymbolMatrix(symIn.Rows - 1, symIn.Columns - 1, symList);
return(cfi);
}
public static List <CoFactorInfo> GetAllMatrixCoFactors(SymbolMatrix ParentMatrix)
{
List <CoFactorInfo> cfList = SymbolMatrix.GetCoFactors(ParentMatrix);
if (cfList[0].Minor.Rows == 2) //At two go back
{
return(cfList);
}
int inc = 0;
CoFactorInfo cfi = null;
CoFactorInfo cfiChild = null;
List <CoFactorInfo> cfListChild = null;
while (inc < cfList.Count)
{
if (cfi == null)
{
cfi = cfList[inc];
}
else if (cfi != null && cfi.ListOfLists.Count == 0) //init value
{
List <CoFactorInfo> cfListTmp = SymbolMatrix.GetCoFactors(cfi.Minor);
cfi.ListOfLists.Add(cfListTmp);
cfListChild = new List <CoFactorInfo>(cfListTmp);
if (cfListChild[0].Minor.Rows == 2) //end of line
{
cfList[inc] = cfi;
cfi = null;
inc++;
}
}
else if (cfi != null && cfi.ListOfLists.Count > 0) //have value
{
List <CoFactorInfo> cfListTmp = null;
cfiChild = new CoFactorInfo();
foreach (CoFactorInfo cfiC in cfListChild)
{
cfListTmp = SymbolMatrix.GetCoFactors(cfiC.Minor);
cfi.ListOfLists.Add(cfListTmp);
cfiChild.ListOfLists.Add(cfListTmp);
}
cfListChild = new List <CoFactorInfo>();
foreach (List <CoFactorInfo> cfl in cfiChild.ListOfLists)
{
foreach (CoFactorInfo cfiC in cfl)
{
cfListChild.Add(cfiC);
}
}
cfiChild = null;
if (cfListChild[0].Minor.Rows == 2) //end of line
{
cfList[inc] = cfi;
cfi = null;
inc++;
}
}
}
return(cfList);
}
