Question

How to sum 2D array (matrix) rows in C#

Answer 1

using System;

namespace ConsoleApplication_C_Sharp
{
    class Program
    {
        static void Main(string[] args)
        {
            int[,] matrix = new int[3, 5] { { 1, 1, 1, 1, 1 },
                                            { 2, 2, 2, 2, 2 },
                                            { 3, 3, 3, 3, 3 } };
            int[] rows_sum = new int[3] { 0, 0, 0 };

            sum_matrix_rows(matrix, rows_sum);

            for (int i = 0; i < 3; i++)
                Console.WriteLine(rows_sum[i]);
        }

        public static void sum_matrix_rows(int[,] matrix, int[] rows_sum)
        {
            for (int i = 0; i < matrix.GetLength(0); i++)
            {
                for (int j = 0; j < matrix.GetLength(1); j++)
                    rows_sum[i] += matrix[i,j];
            }
        }
    }
}


/*
run:
       
5
10
15
   
*/

 

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