课堂随笔05--冒泡排序

           //定义一个八位数组并赋值
            int[] arr1 = new int[8];
            Console.WriteLine("数组值依次为:");
            for (int i = 0;i < arr1.Length;i++)
            {
                Random ra = new Random();
                int j = ra.Next(100);//出一个随机数
                arr1[i] = j;//将随机数赋给数组值
                Console.Write(arr1[i] + " ");
                Thread.Sleep(500);
            }
            Console.Write("\n从大到小排列为:");
            for (int i = 7; i >= 0; i-- )//循环8次 每次循环结束 取出一个最大值
            {
                for (int j = 0;j < i;j++)//循环7次 每次循环结束 相对大值往后挪一位
                {
                    if (arr1[j] > arr1[j + 1])
                    {
                        int k  = arr1[j + 1];//中间变量暂存相对小值
                        arr1[j + 1] = arr1[j];
                        arr1[j] = k;
                    }
                   
                }
                Console.Write(arr1[i] + " ");
            }
            Console.Write("\n从小到大排列:");
            for (int i = 0; i < 8; i++)
                Console.Write(arr1[i] + " ");
            Console.ReadLine();