Java Array Subtract subtract(double[] first, double[] second)

Description

Subtracts second array from the first

License

Apache License

Parameter

Parameter	Description
first	a parameter
second	a parameter

Return

first - second

Declaration

public static double[] subtract(double[] first, double[] second) throws Exception 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright 2013 Karlsruhe Institute of Technology. This Work has been partially supported by the EIT ICT Labs funded research project Towards a Mobile Cloud (activity CLD 12206).
 * /*from   w w  w  .ja v a  2 s. co m*/
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/

public class Main {
    /**
     * Subtracts second array from the first
     * 
     * @param first
     * @param second
     * @return first - second
     */
    public static double[] subtract(double[] first, double[] second) throws Exception {
        if (first.length != second.length) {
            throw new Exception("Lengths of arrays are not equal");
        }
        double[] returnValues = new double[first.length];
        for (int i = 0; i < returnValues.length; i++) {
            returnValues[i] = first[i] - second[i];
        }
        return returnValues;
    }

    /**
     * Subtract one matrix from another
     * 
     * @param input1
     * @param input2
     * @return input1 - input2
     * @throws Exception
     */
    public static int[][] subtract(int[][] input1, int[][] input2) throws Exception {
        int rows = input1.length;
        int columns = input1[0].length;
        if (input2.length != rows) {
            throw new Exception("Row length of arrays are not equal");
        }
        if (input2[0].length != columns) {
            throw new Exception("Column length of arrays are not equal");
        }
        int[][] returnValues = new int[rows][columns];
        for (int r = 0; r < rows; r++) {
            for (int c = 0; c < columns; c++) {
                returnValues[r][c] = input1[r][c] - input2[r][c];
            }
        }
        return returnValues;
    }
}

Related

1. subtract(double[] a, double[] b)
2. subtract(double[] a, double[] b)
3. subtract(double[] accumulator, double[] values)
4. subtract(double[] array, double a)
5. subtract(double[] array, double value)
6. subtract(double[] first, double[] second, double[] out)
7. subtract(double[] flowFrom, double[] flowTo)
8. subtract(double[] p1, double[] p2)
9. subtract(double[] res, double[] subtractor)