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

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            int[] arr = new int[] { 1, 5, 3, 7, 4, 9, 2 };
            int max_element, min_element, max_index, min_index;
            max_element = arr[1];
            min_element = arr[1];
            max_index = 0;
            min_index = 0;
            for(int i = 0; i < arr.Length; i++)
            {
                if(arr[i] > max_element)
                {
                    max_element = arr[i];
                    max_index = i;
                }

                if(arr[i] < min_element)
                {
                    min_element = arr[i];
                    min_index = i;
                }
            }
            foreach (int i in arr)
            {
                System.Console.Write("{0} ", i);
            }

            System.Console.WriteLine("\nМинимальное значение:" + min_element);
            System.Console.WriteLine("Индекс:" + min_index);
            System.Console.WriteLine("Максимальное значение:" + max_element);
            System.Console.WriteLine("Индекс:" + max_index);

            arr[min_index] = max_element;
            arr[max_index] = min_element;

            foreach (int i in arr)
            {
                System.Console.Write("{0} ", i);
            }

            while (true) ;
        }
    }
}