问题的提出：编写程序对数据序列采用二分查找法和顺序查找法查找元素的下标，要求使用类模板实现（其中二分法查找算法要求用递归实现，给定数据序列有序）。-Of the problem: the preparation of procedures for the data sequence using binary search method and the order of search law search element subscr ipt, require the use of class template realize [of which the dichotomy search algorithm requires recursive realize, given data in an orderly sequence].