mapStudent.end()){ Cout”Find,the value is”<<iter->second;} Else { Cout”Do not Find”;}}第三种：这个方法用来判定数据是否出现Lower_bound函数用法，这个函数用来返回要查找关键字的下界(是一个迭代器)Upper_bound函数用法，这个...
coding=utf-8 book_list_in_library=[]ready_borrow_book_list=[]borrowed_book_list=[]menu_info="""input 1:add new book to library input 2:borrow book from library input 3:list all books in library input 4:list all borrowed ...
public class SortTest { public static void main(String[]args){/构造ListList<Info>list=new ArrayList();initList(list);构造结果Map，并遍历List得出结果 Map,Integer>groupList=new HashMap,Integer>();for(Info info:list){ String...
