Java Matrix Max Value max_abs(double[][] matrix)

Description

Returns the absolute maximum of the elements in the two dimensional array matrix.

License

Apache License

Declaration

public static double max_abs(double[][] matrix) 

Method Source Code

//package com.java2s;
/*  //from w ww.  j av  a 2  s. co  m
 * Copyright 2013 University of Southern California 
 *  
 * 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 {
    /**
     * Returns the absolute maximum of the elements in the two dimensional
     * array matrix.
     */
    public static double max_abs(double[][] matrix) {
        int i, j;
        boolean set = false;
        double max = 0;

        // iterate through matrix
        for (i = 0; i < matrix.length; i++) {
            for (j = 0; j < matrix[i].length; j++) {
                // maintain absolute max number found
                if (!set) {
                    max = Math.abs(matrix[i][j]);
                    set = true;
                } else if (Math.abs(matrix[i][j]) > max) {
                    max = Math.abs(matrix[i][j]);
                }
            }
        }
        return max;
    }
}

Related

1. max(double[][] x)
2. max(float a[][][])
3. max(float[][] a)
4. max(float[][] originalValues, float[][] newValues, int[] indexArray, float value)
5. maxDifffer(double[][] pos)
6. maxDistance(double[][] _values)
7. maxIndices(double M[][])
8. maxInRowIndex(double[][] M, int row)