天天向上

   1: int[][] x = new int[3][];

   2: Random r = new Random();

   3: for (int i = 0; i < x.Length; i++)

   4: {

   5:     int len = r.Next() % 5 + 1;

   6:     x[i] = new int[len];

   7:     Console.WriteLine("i = {0}, len = {1}", i, len);

   8:     for (int j = 0; j < x[i].Length; j++)

   9:     {

  10:         x[i][j] = r.Next() % 10;

  11:         Console.WriteLine("x[{0}][{1}] = {2}", i, j, x[i][j]);

  12:     }

  13: }

   1: Console.WriteLine(" ========== After sorting =============== ");

   2: for (int i = 0; i < x.Length; i++)

   3: {

   4:     Array.Sort(x[i]);

   5:     for (int j = 0; j < x[i].Length; j++)

   6:     {                   

   7:        Console.WriteLine("x[{0}][{1}] = {2}", i, j, x[i][j]);

   8:     }

   9:     Console.WriteLine(" ======================= ");

  10: }

   1: static void reverse(ref int[] num)

   2: {

   3:     int i, t, j = 0;

   4:     for (i = 0; i < num.GetUpperBound(0) / 2; i++)

   5:     {

   6:         t = num[i];

   7:         num[i] = num[num.GetUpperBound(0) - j];

   8:         num[num.GetUpperBound(0) - j] = t;

   9:         j++;

  10:     }

  11: }

   1: Console.WriteLine(" ========== After reversing =============== ");

   2: for (int i = 0; i < x.Length; i++)

   3: {

   4:     reverse(ref x[i]);

   5:     for (int j = 0; j < x[i].Length; j++)

   6:     {

   7:         Console.WriteLine("x[{0}][{1}] = {2}", i, j, x[i][j]);

   8:     }

   9:     Console.WriteLine(" ======================= ");

  10: }