using System;

public class Program

{

    public static void Main()

    {

        int[] arr = { 1, 2, 3, 4, 5 };

        int[] newArr = new int[arr.Length];

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

        {

            newArr[(i + 1) % newArr.Length] = arr[i];

        }

        Console.WriteLine(string.Join(",",newArr));

    }

}