hdoj 1247 Hat’s Words(字典树)

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hdoj 1247 Hat’s Words(字典树)

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1247 思路分析:题目要求找出在输入字符串中的满足要求(该字符串由输入的字符串中的两个字符串拼接而成)的字符串. 对于长度为LEN的字符串,其可能由LEN种可能的拼接可能:现在问题转化为查找能够拼接成该字符串的可能的两个字符串是否都在输入的字符串中,使用字典树可以实现快速的字符串查找,算法复杂度为O(N*M),N为输入字符串的个数,M为字符串长度. 代码如下: #include <cstdio>…

HDU 1247 - Hat’s Words - [字典树水题]

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1247 Problem DescriptionA hat’s word is a word in the dictionary that is the concatenation of exactly two other words in the dictionary.You are to find all the hat’s words in a dictionary. InputStandard…

hdu 1247 Hat’s Words(字典树)

Hat's Words Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 9574 Accepted Submission(s): 3421 Problem Description A hat's word is a word in the dictionary that is the concatenation of exactl…

Hat’s Words(字典树)

Problem Description A hat's word is a word in the dictionary that is the concatenation of exactly two other words in the dictionary. You are to find all the hat's words in a dictionary. Input Standard input consists of a number of lowercase words,…

HDOJ/HDU 1251 统计难题(字典树啥的~Map水过)

Problem Description Ignatius最近遇到一个难题,老师交给他很多单词(只有小写字母组成,不会有重复的单词出现),现在老师要他统计出以某个字符串为前缀的单词数量(单词本身也是自己的前缀). Input 输入数据的第一部分是一张单词表,每行一个单词,单词的长度不超过10,它们代表的是老师交给Ignatius统计的单词,一个空行代表单词表的结束.第二部分是一连串的提问,每行一个提问,每个提问都是一个字符串. 注意:本题只有一组测试数据,处理到文件结束. Output 对于每个提…

Hdu 1247 Hat's Words(Trie树)

Hat's Words Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 14083 Accepted Submission(s): 5049 Problem Description A hat's word is a word in the dictionary that is the concatenation of exactly two…