冒泡排序

回顾复习：

static void Main(string[] args)
        {
            int[] arr = { 2, 3, 1, 5,8, 4 };

            for (int i = 0; i < arr.Length; i++)
            {
                for (int j = 0; j < arr.Length-1-i; j++)
                {
                    if (arr[j] > arr[j+1])
                    {
                        int temp = arr[j];
                        arr[j] = arr[j+1];
                        arr[j+1] = temp;
                    }
                }
            }

            arr.ToList().ForEach(a => Console.Write(a));

            Console.ReadLine();
        }