@Override
public AbstractMatrix multiply(AbstractMatrix aMatrix) throws MatrixException {
if (getColumns() != aMatrix.getRows()) {
throw new MatrixException(
"Could not multiply matrices ["
+ getRows()
+ ","
+ getColumns()
+ "] x ["
+ aMatrix.getRows()
+ ","
+ aMatrix.getColumns()
+ "]");
}
Matrix2 theMatrix = new Matrix2(getRows(), aMatrix.getColumns());
double theValue = 0;
for (int theMultiplyColumn = 0; theMultiplyColumn < aMatrix.getColumns(); theMultiplyColumn++) {
for (int theMultiplyRow = 0; theMultiplyRow < getRows(); theMultiplyRow++) {
theValue = 0;
for (int thePosition = 0; thePosition < getColumns(); thePosition++) {
theValue +=
getValueAt(theMultiplyRow, thePosition)
* aMatrix.getValueAt(thePosition, theMultiplyColumn);
}
theMatrix.setValueAt(theMultiplyRow, theMultiplyColumn, theValue);
}
}
return theMatrix;
}
