完成mynspace的定义，并在main函数中写出完整程序，演示函数功能,先将用户输入的数组进行从大到小的排序，然后利用指针对重复出现的数组元素进行次数计算，然后再比较把众数的次数找出，然后输出结果

-Complete definition of mynspace , and write a complete program in the main function , demo function function , the first user input array to sort from largest to smallest , and then use the recurring elements of an array , the number of calculation , and then compare the plural number of times to find out , and then output the result