Here you can find the source of sum(double a[], int begin, int end)
public final static double sum(double a[], int begin, int end)
//package com.java2s; /*/*from w ww. ja va 2 s .c o m*/ * 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 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; } }