using System;

using System.Linq;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

int[] array = new int[] { 12,21,66,16,99 }; 

for (int i = 0; i < array.Length - 1; i++) 

{

for (int j = 0; j < array.Length - 1; j++) 

{

​

if (array[j] > array[j + 1]) 

{

int tmp = array[j];

​

array[j] = array[j + 1];

​

array[j + 1] = tmp;

}

}

}

for (int i = 0; i < array.Length; i++)

{

if(i % 2 == 1)

{

    Console.WriteLine("const: " + array[i]);

}

else

{

    Console.WriteLine(array[i]);

}

}

    }

}