Here you can find the source of substract(double[] a, double[] b)
public static double[] substract(double[] a, double[] b)
//package com.java2s; /**// www . j a va 2s. c o m * Copyright 2004-2006 DFKI GmbH. * All Rights Reserved. Use is subject to license terms. * * Permission is hereby granted, free of charge, to use and distribute * this software and its documentation without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of this work, and to * permit persons to whom this work is furnished to do so, subject to * the following conditions: * * 1. The code must retain the above copyright notice, this list of * conditions and the following disclaimer. * 2. Any modifications must be clearly marked as such. * 3. Original authors' names are not deleted. * 4. The authors' names are not used to endorse or promote products * derived from this software without specific prior written * permission. * * DFKI GMBH AND THE CONTRIBUTORS TO THIS WORK DISCLAIM ALL WARRANTIES WITH * REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL DFKI GMBH NOR THE * CONTRIBUTORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF * THIS SOFTWARE. */ public class Main { public static double[] substract(double[] a, double[] b) { if (a.length != b.length) { throw new IllegalArgumentException("Arrays must be equal length"); } double[] c = new double[a.length]; for (int i = 0; i < a.length; i++) { c[i] = a[i] - b[i]; } return c; } public static double[] substract(double[] a, double b) { double[] c = new double[a.length]; for (int i = 0; i < a.length; i++) { c[i] = a[i] - b; } return c; } public static double[][] substract(double[][] x, double[][] y) { double[][] z = null; if (x != null && y != null) { int i, j; assert x.length == y.length; for (i = 0; i < x.length; i++) { assert x[i].length == x[0].length; assert x[i].length == y[i].length; } z = new double[x.length][x[0].length]; for (i = 0; i < x.length; i++) { for (j = 0; j < x[i].length; j++) z[i][j] = x[i][j] - y[i][j]; } } return z; } public static float[] substract(float[] a, float[] b) { if (a.length != b.length) { throw new IllegalArgumentException("Arrays must be equal length"); } float[] c = new float[a.length]; for (int i = 0; i < a.length; i++) { c[i] = a[i] - b[i]; } return c; } public static float[] substract(float[] a, float b) { float[] c = new float[a.length]; for (int i = 0; i < a.length; i++) { c[i] = a[i] - b; } return c; } }