要求随机关生一个序列，任意查找其中一个元素时，采用二分搜索法实现，并且还能显示查找次数。使用二分法首先要使序列列按从小到大排序，因此程序中还要有排序功能。- there is a random series ,when looking for any an element in this series,we can achieve this by the method of bisectional searching,also the number of search times will be