386

using System;
using System.Text;
namespace ExamTasks
{
    class Program
    {
        static void Main(string[] args)
        {
            Random rnd = new Random();
            const int m = 6;
            const int n = 9;
            double temp = 0;
            double[,] matrix = new double[6, 9];
            for (int i = 0; i < m; i++)
            {
                for (int j = 0; j < n; j++)
                {
                    matrix[i, j] = rnd.Next(0, 10);
                    Console.Write(matrix[i, j] + "\t");
                }
                Console.WriteLine("");
            }
            double maxElement = matrix[0, 0];
            int stringNumberWithMaxElement = 1;
            double minElement = maxElement;
            int stringNumberWithMinElement = 1;
            for (int i = 0; i < m; i++)
                for (int j = 0; j < n; j++)
                {
                    if (matrix[i, j] > maxElement)
                    {
                        maxElement = matrix[i, j];
                        stringNumberWithMaxElement = i;
                    }
                    if (matrix[i, j] < minElement)
                    {
                        minElement = matrix[i, j];
                        stringNumberWithMinElement = i;
                    }

                }
            for (int i = 0; i < n; i++)
            {
                temp = matrix[stringNumberWithMaxElement, i];
                matrix[stringNumberWithMaxElement, i] = matrix[stringNumberWithMinElement, i];
                matrix[stringNumberWithMinElement, i] = temp;
            }
            Console.WriteLine("");
            for (int i = 0; i < m; i++)
            {
                for (int j = 0; j < n; j++)
                    Console.Write(matrix[i, j] + "\t");
                Console.WriteLine("");
            }
        }
    }
}