Java Array Divide divide(float[][] a, float num)

Description

Computes the pointwise division of an array by num , leaving the result in a .

License

Apache License

Parameter

Parameter	Description
a	array
num	number

Declaration

public static void divide(float[][] a, float num) 

Method Source Code

//package com.java2s;
/*/*from   ww  w  .  j  a  v  a  2s.  com*/
 * Copyright 2016 Universidad Nacional de Colombia
 * 
 * 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 {
    /**
     * Computes the pointwise division of an array by {@code num}, leaving the
     * result in {@code a}.
     *
     * @param a array
     * @param num number
     *
     * @since JDiffraction 1.2
     */
    public static void divide(float[][] a, float num) {
        checkDimension(a);
        int M = a.length;
        int N = a[0].length;

        for (int i = 0; i < M; i++) {
            for (int j = 0; j < N; j++) {
                a[i][j] = a[i][j] / num;
            }
        }
    }

    /**
     * Computes the pointwise division of an array by {@code num}, leaving the
     * result in {@code a}.
     *
     * @param a array
     * @param num number
     *
     * @since JDiffraction 1.2
     */
    public static void divide(double[][] a, double num) {
        checkDimension(a);
        int M = a.length;
        int N = a[0].length;

        for (int i = 0; i < M; i++) {
            for (int j = 0; j < N; j++) {
                a[i][j] = a[i][j] / num;
            }
        }
    }

    private static void checkDimension(float[][] a) {
        if (a.length == 0) {
            throw new IllegalArgumentException("Arrays dimension must be greater than 0.");
        } else if (a[0].length == 0) {
            throw new IllegalArgumentException("Arrays dimension must be greater than 0.");
        }
    }

    private static void checkDimension(double[][] a) {
        if (a.length == 0) {
            throw new IllegalArgumentException("Arrays dimension must be greater than 0.");
        } else if (a[0].length == 0) {
            throw new IllegalArgumentException("Arrays dimension must be greater than 0.");
        }
    }
}

Related

1. divide(double[][] arr1, double[][] arr2)
2. divide(double[][] numerator, double[][] denominator)
3. divide(final double[] numerators, final double[] denominators)
4. divide(final double[] v1, final double[] v2)
5. divide(float[] array, float divident)
6. divide(float[][][][] img, float val)
7. divide(int[] array1, int[] array2)
8. divide(long[] array, double value)
9. divideAbsolute(double[] one, double[] two)