public static SparseMatrix ReadSparseMatrix(string path)
{
var result = new SparseMatrix();
var reader = new StreamReader(path);
var line = reader.ReadLine();
result.Size = int.Parse(line);
reader.ReadLine();
while (null != (line = reader.ReadLine()))
{
var tokens = line.Split(", ".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
var elem = new SparseElement()
{
Val = double.Parse(tokens[0]),
Row = int.Parse(tokens[1]),
Col = int.Parse(tokens[2]),
};
if (result[elem.Row, elem.Col] == null)
{
result.Push(elem);
}
else
{
result[elem.Row, elem.Col] = new SparseElement()
{
Row = elem.Row,
Col = elem.Col,
Val = result[elem.Row, elem.Col] !.Val + elem.Val
};
}
}
return(result);
}
private void Push(SparseElement e) => _matrix.Add(e);
public static SparseMatrix ReadTriDiagonal(string path)
{
int lineIndex = 1;
var result = new SparseMatrix();
var reader = new StreamReader(path);
result.Size = int.Parse(reader.ReadLine());
var p = int.Parse(reader.ReadLine());
var q = int.Parse(reader.ReadLine());
reader.ReadLine();
lineIndex += 4;
var line = string.Empty;
int counter = 0;
while (counter < result.Size)
{
line = reader.ReadLine();
lineIndex++;
var tokens = line.Split(", ".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
if (tokens.Length == 0)
{
Console.WriteLine($"###{line}###");
}
var elem = new SparseElement()
{
Val = double.Parse(tokens[0]),
Row = counter,
Col = counter,
};
if (result[elem.Row, elem.Col] == null)
{
result.Push(elem);
}
else
{
result[elem.Row, elem.Col] = new SparseElement()
{
Row = elem.Row,
Col = elem.Col,
Val = result[elem.Row, elem.Col] !.Val + elem.Val
};
}
counter++;
}
reader.ReadLine();
int counter2 = 0;
while (counter2 < result.Size - p)
{
line = reader.ReadLine();
lineIndex++;
var tokens = line.Split(", ".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
if (tokens.Length == 0)
{
Console.WriteLine($"%%%{lineIndex}%%%");
}
var elem = new SparseElement()
{
Val = double.Parse(tokens[0]),
Row = counter2,
Col = counter2 + p,
};
if (result[elem.Row, elem.Col] == null)
{
result.Push(elem);
}
else
{
result[elem.Row, elem.Col] = new SparseElement()
{
Row = elem.Row,
Col = elem.Col,
Val = result[elem.Row, elem.Col] !.Val + elem.Val
};
}
counter2++;
}
reader.ReadLine();
var counter3 = 0;
while (counter3 < result.Size - q)
{
line = reader.ReadLine();
var tokens = line.Split(", ".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
var elem = new SparseElement()
{
Val = double.Parse(tokens[0]),
Row = counter3 + q,
Col = counter3,
};
if (result[elem.Row, elem.Col] == null)
{
result.Push(elem);
}
else
{
result[elem.Row, elem.Col] = new SparseElement()
{
Row = elem.Row,
Col = elem.Col,
Val = result[elem.Row, elem.Col] !.Val + elem.Val
};
}
counter3++;
}
return(result);
}
