Java Matrix Max Value max(float[][] a)

Description

Gets the max value of a real array.

License

Apache License

Parameter

Parameter	Description
a	array

Return

max

Declaration

public static float max(float[][] a) 

Method Source Code

//package com.java2s;
/*/*from  w w w .  j  av a2s.  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 {
    /**
     * Gets the max value of a real array.
     *
     * @param a array
     * @return max
     */
    public static float max(float[][] a) {
        checkDimension(a);
        int M = a.length;
        int N = a[0].length;

        float max = a[0][0];

        for (int i = 0; i < M; i++) {
            for (int j = 0; j < N; j++) {
                max = Math.max(max, a[i][j]);
            }
        }
        return max;
    }

    /**
     * Gets the max value of a real array.
     *
     * @param a array
     * @return max
     */
    public static double max(double[][] a) {
        checkDimension(a);
        int M = a.length;
        int N = a[0].length;

        double max = a[0][0];

        for (int i = 0; i < M; i++) {
            for (int j = 0; j < N; j++) {
                max = Math.max(max, a[i][j]);
            }
        }
        return max;
    }

    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. max(double[][] x)
2. max(float a[][][])
3. max(float[][] originalValues, float[][] newValues, int[] indexArray, float value)
4. max_abs(double[][] matrix)
5. maxDifffer(double[][] pos)
6. maxDistance(double[][] _values)