编程介的小学生 2020-05-26 21:27 采纳率: 20.5%
浏览 55
已结题

Frugal Search 关于搜索算法

Problem Description
For this problem you will write a search engine that takes a query, searches a collection of words, and finds the lexicographically smallest word that matches the query (i.e., the matching word that would appear first in an English dictionary). A query is a sequence of one or more terms separated by single vertical bars ("|"). A term is one or more letters followed by zero or more signed letters. A signed letter is either +s ("positive" s) or -s ("negative" s), where s is a single letter. All letters are lowercase, and no letter will appear more than once within a term. A query will not contain spaces. A term matches a word if the word contains at least one of the unsigned letters, all of the positive letters, and none of the negative letters; a query matches a word if at least one of its terms matches the word.

Input
The input consists of one or more test cases followed by a line containing only "#" that signals the end of the input. Each test case consists of 1–100 words, each on a line by itself, followed by a line containing only "*" that marks the end of the word list, followed by one or more queries, each on a line by itself, followed by a line containing only "**" that marks the end of the test case. Each word will consist of 1–20 lowercase letters. All words within a test case will be unique. Each query will be as defined above and will be 1–79 characters long.

Output
For each query, output a single line containing the lexicographically smallest word within that test case that matches the query, or the word NONE if there is no matching word. At the end of each test case, output a dollar sign on a line by itself.

Sample Input
elk
cow
bat
*
ea
acm+e
nm+o|jk+l
**
debian
slackware
gentoo
ubuntu
suse
fedora
mepis
*
yts
cab-e+n
r-e|zjq|i+t|vs-p+e-u-c
**
#

Sample Output
bat
NONE
elk
$
gentoo
ubuntu
NONE
$

  • 写回答

0条回答 默认 最新

    报告相同问题?

    悬赏问题

    • ¥15 基于卷积神经网络的声纹识别
    • ¥15 Python中的request,如何使用ssr节点,通过代理requests网页。本人在泰国,需要用大陆ip才能玩网页游戏,合法合规。
    • ¥100 为什么这个恒流源电路不能恒流?
    • ¥15 有偿求跨组件数据流路径图
    • ¥15 写一个方法checkPerson,入参实体类Person,出参布尔值
    • ¥15 我想咨询一下路面纹理三维点云数据处理的一些问题,上传的坐标文件里是怎么对无序点进行编号的,以及xy坐标在处理的时候是进行整体模型分片处理的吗
    • ¥15 CSAPPattacklab
    • ¥15 一直显示正在等待HID—ISP
    • ¥15 Python turtle 画图
    • ¥15 stm32开发clion时遇到的编译问题