在程序中输入数组大小n，通过动态分配内存函数malloc产生一个整型数组，接着输入该数组的n个元数，并使用一个函数对组数进行排序（从小到大，要求用选择法实现）-In the procedure input array size n, through dynamic allocation of memory function malloc generate an integer array, and then enter the array of n-ary number, and use a function to sort a few of the groups (from small to large, requires selection method implementation)