Java tutorial
//package com.java2s; /* * Copyright Kirill Morozov 2012 * * This file is part of Mapper. Mapper is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. Mapper 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with Mapper. If not, see <http://www.gnu.org/licenses/>. * * */ public class Main { public static float vectorMagnitudeSquare(float[] vector) { float accum = 0; for (int i = 0; i < vector.length; i++) { accum += Math.pow(vector[i], 2); } return Math.abs(accum); } }