Java Matrix Sum sumLines(double a[][])

Description

sum Lines

License

Open Source License

Declaration

public final static double[] sumLines(double a[][]) 

Method Source Code

//package com.java2s;
/*//from   w  w  w  .jav a 2  s. com
 *  Util.java
 *  This file is part of AcMus.
 *  
 *  AcMus: Tools for Measurement, Analysis, and Simulation of Room Acoustics
 *  
 *  Copyright (C) 2006 Leo Ueda, Bruno Masiero
 *  
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU General Public License
 *  as published by the Free Software Foundation; either version 2
 *  of the License, or (at your option) any later version.
 *  
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *  
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 */

public class Main {
    public final static double[] sumLines(double a[][]) {
        double[] res = new double[a.length];
        for (int i = 0; i < a.length; i++) {
            res[i] = sum(a[i]);
        }
        return res;
    }

    public final static double sum(double a[]) {
        return sum(a, 0, a.length);
    }

    public final static double sum(double a[], int begin, int end) {
        double res = 0;
        for (int i = begin; i < end; i++) {
            res += a[i];
        }
        return res;
    }

    public final static double[] sum(double a[], int aBegin, double b[], int bBegin, int len, double[] res) {
        for (int i = 0; i < len; i++) {
            res[i] = a[i + aBegin] + b[i + bBegin];
        }
        return res;
    }
}

Related

1. sumArrays(double a[][], double b[][], String sign)
2. sumAxis1(double[][] X)
3. sumCols(boolean[][] inputMatrix)
4. sumDimension(double[][] matrix, int dim)
5. SumIntegrateHistogram_25(float[][][] histo_array)
6. sumMetrix(double[][] total, double[][] element)
7. sumOfMatrixElements(double[][] m)
8. sumRow(int[][] matrix, int u)
9. sumRow(int[][] table, int column)