int[] numbers = new int[]{3,34,12,33,1,23,12};
            for(int i = 0; i < numbers.Length; i++)
            {
                for(int j = 0; j < numbers.Length;j++)
                {
                    if(numbers[i] < numbers[j])
                    {
                        numbers[i] = numbers[i] + numbers[j];
                        numbers[j] = numbers[i] - numbers[j];
                        numbers[i] = numbers[i] - numbers[j];
                    }
                            
                }
            }

------解决方案--------------------
public static void ExecuteSortedMethod(int[] num, int sortedMethod)
       {
           if (sortedMethod == 1)      //升序排列
           {
               for (int i = 0; i < num.Length -1; i++)
               {
                   for (int j = 0; j < num.Length - 1 - i; j++)
                   {
                       if (num[j] > num[j + 1])
                       {
                           int temp = num[j];
                           num[j] = num[j + 1];
                           num[j + 1] = temp;
                       }
                   }
               }
           }
           if (sortedMethod == 2)      //降序排列
           {
               for (int i = 0; i < num.Length - 1; i++)
               {
                   for (int j = 0; j < num.Length - 1 - i; j++)
                   {
                       if (num[j] < num[j + 1])
                       {
                           int temp = num[j];
                           num[j] = num[j + 1];
                           num[j + 1] = temp;
                       }
                   }
               }
           }
       }

   }



------解决方案--------------------
楼上把sortedMethod变成一个枚举会更好。