BubbleSort-Special

using java.util;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Diagnostics;

namespace SoftSvetlina
{
    class Program
    {
        static void BubbleSort(List<int> list)
        {
            for (int j = 0; j < list.Count - 1; j++)
            {
                bool flag = false;
                for (int i = 0; i < list.Count - j - 1; i++)
                {
                    if (SumDigits(list[i]) > SumDigits(list[i + 1]) ||
                        (SumDigits(list[i]) == SumDigits(list[i + 1]) && list[i] > list[i + 1]))
                    {
                        flag = true;
                        int temp = list[i];
                        list[i] = list[i + 1];
                        list[i + 1] = temp;
                    }
                }
                if (!flag)
                {
                    break;
                }
            }
        }

        static int SumDigits(int number)
        {
            int sum = 0;
            while (number != 0)
            {
                sum += number % 10;
                number /= 10;
            }
            return sum;
        }

        static void Main()
        {

            List<int> nums = new List<int>();
            using (StreamReader reader = new StreamReader("numbers.txt"))
            {
                string line;
                while ((line = reader.ReadLine()) != null)
                {
                    nums.Add(int.Parse(line));
                }
            }

            BubbleSort(nums);

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

            using (StreamWriter writer = new StreamWriter("numberssort.txt"))
            {
                foreach (var item in nums)
                {
                    writer.WriteLine(item);
                }
            }

        }
    }
}