Java Array Max Value maxIndex(int[] shape)

Description

max Index

License

Open Source License

Declaration

public static int maxIndex(int[] shape) 

Method Source Code

//package com.java2s;
/* ---------------------------------------------------------------------
 * Numenta Platform for Intelligent Computing (NuPIC)
 * Copyright (C) 2014, Numenta, Inc.  Unless you have an agreement
 * with Numenta, Inc., for a separate license for this software code, the
 * following terms and conditions apply:
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero Public License version 3 as
 * published by the Free Software Foundation.
 *
 * 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 Affero Public License for more details.
 *
 * You should have received a copy of the GNU Affero Public License
 * along with this program.  If not, see http://www.gnu.org/licenses.
 *
 * http://numenta.org/licenses///from   w  ww. j a v a 2s.c  o m
 * ---------------------------------------------------------------------
 */

public class Main {
    public static int maxIndex(int[] shape) {
        return shape[0] * Math.max(1, initDimensionMultiples(shape)[0]) - 1;
    }

    /**
     * Returns the maximum value in the specified array
     * @param array
     * @return
     */
    public static int max(int[] array) {
        int max = Integer.MIN_VALUE;
        for (int i = 0; i < array.length; i++) {
            if (array[i] > max) {
                max = array[i];
            }
        }
        return max;
    }

    /**
     * Returns the maximum value in the specified array
     * @param array
     * @return
     */
    public static double max(double[] array) {
        double max = Double.MIN_VALUE;
        for (int i = 0; i < array.length; i++) {
            if (array[i] > max) {
                max = array[i];
            }
        }
        return max;
    }

    /**
     * Initializes internal helper array which is used for multidimensional
     * index computation.
     *
     * @param shape     an array specifying sizes of each dimension
     * @return
     */
    public static int[] initDimensionMultiples(int[] shape) {
        int holder = 1;
        int len = shape.length;
        int[] dimensionMultiples = new int[shape.length];
        for (int i = 0; i < len; i++) {
            holder *= (i == 0 ? 1 : shape[len - i]);
            dimensionMultiples[len - 1 - i] = holder;
        }
        return dimensionMultiples;
    }
}

Related

1. maxIndex(float[] x)
2. maxIndex(int[] a)
3. maxIndex(int[] array)
4. maxIndex(int[] from)
5. maxIndex(int[] list)
6. maxIndex(int[] values, int begin, int end)
7. maxIndex(Number[] array)
8. maxIndex(T[] array)
9. maxIndices(double[] aArray, Integer[] indices)