public void setRow(int index, Vector vector) { validateColumnIndex(index); if (isInsideRow(vector.getSize())) { for (int i = 0; i < rows.length; ++i) { Vector tmp = new Vector(rows[i]); this.rows[i] = new Vector(vector.getSize()); this.rows[i].sum(tmp); } } for (int i = 0; i < vector.getLength(); ++i) { rows[index].setValue(i, vector.getValue(i)); } }
public Vector multiplicationOnVector(Vector vector) { try { if (vector.getSize() != rows[0].getSize()) { throw new Exception("Длинна вектора не совпадает с колличеством столбцов в матрице"); } } catch (Exception e) { e.printStackTrace(); } Vector resultVector = new Vector(vector.getSize()); for (int i = 0; i < rows.length; ++i) { double result = 0; for (int j = 0; j < rows[i].getSize(); ++j) { result += rows[i].getValue(j) * vector.getValue(j); } resultVector.setValue(i, result); } return resultVector; }