Calculates the sum of all the elements in the matrix - Java java.lang

Description

Calculates the sum of all the elements in the matrix

Demo Code

//package com.java2s;

public class Main {
    /** /*from  w w w  .  ja v a 2 s . c o m*/
     * Calculates the sum of all the elements in the matrix
     * @param matrix Matrix whose sum is to be calculated
     * @return Double containing the sum of the given matrix
     */
    public static <T> double getMatrixSum(T[][] matrix) {

        double sum = 0.0;

        for (int i = 0; i < matrix.length; i++) {

            for (int j = 0; j < matrix[i].length; j++) {

                sum = sum + (Double) matrix[i][j];
            }
        }

        return sum;
    }
}

• Previous
• Next

Related Tutorials

• Calculate the inner product of 2 vectors, where the first vector is a row in the first matrix, and the second vector is a column in the second matrix.
• Returns the sum of a given column of the matrix (the numbering starts from 1)
• Calculates the sum of the principal diagonal of a square matrix
• Returns the sum of a given row of the matrix (the numbering starts from 1)
• Make the Cholesky decomposition L of a given input matrix A, where: A is symmetric and positive definite (has full rank) A = L L^T (L^T is the transpose of L - here A has real entries only, though a Cholesky decomposition is possible with complex entries) L is a lower triangular matrix We perform the decomposition using the Cholesky?Banachiewicz algorithm, computing L from the top left, row by row (see wikipedia) This method has been adapted from the JAMA project (public domain software)