배열 swap 그리기 연습

using System;
using System.IO;
using Newtonsoft.Json;
using System.Collections.Generic;
using System.Threading.Tasks;
using System.Threading;

namespace Helloworld1
{
    
    class App
    {
        public App()
        {
            int[] arr = new int[3];
            arr[0] = 5;
            arr[1] = 3;
            arr[2] = 6;

            int temp = arr[1];
            arr[1] = arr[0];
            arr[0] = temp;

            foreach(int num in arr)
            {
                Console.WriteLine(num);
            }
        }
    }
}