[数据结构与算法]C#:矩阵运算为例的函数重载运用

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace 重载函数
{
    class Program
    {
        static void Matrix_Mulation(ref double[,] a, ref double[,] b,ref double [,] ab)
        {
            int m1 = a.GetLength(0);
            int n1 = a.GetLength(1);
            int m2 = b.GetLength(0);
            int n2 = b.GetLength(1);
            ab = new double[m1, n2];
            if (n1 == m2)
            {
                for (int i = 0; i < m1; i++)
                {
                    for (int j = 0; j < n2; j++)
                    {
                        for (int k = 0; k < n1; k++)
                        {
                            ab[i, j] += a[i, k] * b[k, j];

                        }
                    }
                }
            }
            else
            {
                Console.WriteLine("两数组无法相乘");
            }
        }
        static void Matrix_Mulation(ref double n, ref double[,] A, ref double[,] nA)
        {
            nA = new double[A.GetLength(0), A.GetLength(1)];
            for (int i = 0; i < A.GetLength(0); i++)
            {
                for (int j = 0; j < A.GetLength(1); j++)
                {
                    nA[i, j] = n * A[i, j];
                }
            }
 
        }
        static void OutPut(ref double[,] M)
        {
            for (int i = 0; i < M.GetLength(0); i++)
            {
                for (int j = 0; j < M.GetLength(1); j++)
                {
                    Console.Write("{0,6}", M[i, j]);
                }
                Console.WriteLine();
            }
        }
         

        static void Main(string[] args)
        {
            double[,] a = { { 1, 2, 3 }, { 4, 5, 6 }, { 7, 8, 9 } };
            double[,] b = { { 1, 2 }, { 4, 5 }, { 7, 8 } };
            double[,] ab = { };
            double [,] M={};
            double n=-1;
            double[,] A = { };
            double[,] nA = { };
            Matrix_Mulation(ref a, ref b, ref ab);
            M = ab;
            Console.WriteLine("------------两矩阵相乘结果为------------");
            Console.WriteLine();
            OutPut(ref M);
            A = a;
            Matrix_Mulation(ref n, ref A, ref nA);
            Console.WriteLine("------------两矩阵相乘结果为------------");
            Console.WriteLine();
            M = nA;
            OutPut(ref M);
        }
    }
}

运行结果如下：

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