public static void CopyRow(SparseRowMatrixList to, int row, SparseRowMatrixList from, int fromRow)
{
int frl = from.rowLength(fromRow);
if (frl == 0)
{
return;
}
//Console.WriteLine("Copyrow - "+ to.NonZeroValueCount+ " ," + to.val.Length +" ,"+ frl+" ,"+ (frl/ARRAYINCREMENT) );
if (!to.val.ContainsKey(row))
{
to.val.Add(row, new SparseRowValue[from.val[fromRow].Length]);
}
else if (to.val[row].Length < from.val[fromRow].Length)
{
SparseRowValue[] rowArr = to.val[row];
Array.Resize(ref rowArr, from.val[fromRow].Length);
to.val[row] = rowArr;
}
Array.Copy(from.val[fromRow], to.val[row], from.val[fromRow].Length);
}
public SparseMatrix Transpose()
{
SparseRowMatrixList trans = new SparseRowMatrixList(colCount, rowCount);
int[] rowCounts = new int[colCount];
rowCounts.Initialize();
for (int i = 0; i < rowCount; i++)
{
int len = (val.ContainsKey(i)) ? val[i].Length : 0;
for (int j = 0; j < len; j++)
{
rowCounts[val[i][j].index]++;
}
}
for (int i = 0; i < colCount; i++)
{
trans.val[i] = new SparseRowValue[rowCounts[i]];
rowCounts[i] = 0;
}
for (int i = 0; i < rowCount; i++)
{
int len = (val.ContainsKey(i)) ? val[i].Length : 0;
for (int j = 0; j < len; j++)
{
int col = val[i][j].index;
trans.val[col][rowCounts[col]].index = i;
trans.val[col][rowCounts[col]].value = val[i][j].value;
rowCounts[col]++;
}
}
return(trans);
}
public void CopyRow(int toRow, SparseMatrix from, int fromRow)
{
SparseRowMatrixList.CopyRow(this, toRow, (SparseRowMatrixList)from, fromRow);
}
