调用系统的rand函数，随机产生一个数组（数组的大小可由键盘输入）可选择排列方式（升序或降序），显示产生的数组和排列成功的数组；-Call the system s rand function generates a random array (the array size by keyboard input) option arrangement (ascending or descending), showing the success of the resulting array and the arrangement of the array