Message Flood Time Limit:1500MS     Memory Limit:65536KB     64bit IO Format:%lld & %llu     Description Well, how do you feel about mobile phone? Your answer would pro…

转载请注明出处:http://blog.csdn.net/mxway/article/details/21321541 在搜索引擎在通常会对关键字出现的次数进行统计,这篇文章分析下使用C++ STL中的map进行统计,及使用字典树进行统计在运行速度,空间及适用场合进行分析.首先随机生成100万个3-6长度的字符串.为了简化问题,字符串中仅由小写字母组成.另外随机生成10万个长度3-8的字符串用于测试map和字典树在查询方面的效率. 下面是使用map和字典树实现的C++代码: STL map实现统…

题目链接:http://poj.org/bbs?problem_id=2503 思路分析: 题目数据数据量为10^5, 为查找问题,使用Hash或Map等查找树可以解决,也可以使用字典树查找. 代码(Map实现): #include <iostream> #include <sstream> #include <string> #include <map> using namespace std; int main() { ], foreignWord[],…

一. 题目 487-3279 Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 274040   Accepted: 48891 Description Businesses like to have memorable telephone numbers. One way to make a telephone number memorable is to have it spell a memorable word or…

字典树应用 - poj 1002 Description Businesses like to have memorable telephone numbers. One way to make a telephone number memorable is to have it spell a memorable word or phrase. For example, you can call the University of Waterloo by dialing the memorab…

题目链接:http://poj.org/problem?id=2418 题意:给定一堆树的名字,现在问你每一棵树[无重复]的出现的百分比,并按树名的字典序输出 思路:最简单的就是用map来写,关于字典树的解法,因为字典序的先序遍历是排序的,所以只需建好树后先序遍历一下树就可以满足题目要求的输出方式了. 坑点:树名会出现空格,而且题目也没说明可能出现的字符集合,所以树的孩子结点要有128个. G++无限WA换C++就能AC,这个无解... map: #define _CRT_SECURE_NO_D…

// trie 字典树实现 package Algorithm // 字典树节点 type TrieNode struct { children map[interface{}]*TrieNode isEnd bool } // 构造字典树节点 func newTrieNode() *TrieNode { return &TrieNode{children: make(map[interface{}]*TrieNode), isEnd: false} } // 字典树 type Trie str…

用字典树没过,学习了一下map; 参考博客:http://blog.csdn.net/zhengnanlee/article/details/8962432 AC代码 #include<iostream> #include<map> #include<algorithm> using namespace std; int main() { int n,m,i; while(cin>>n&&n) { cin>>m; map<s…

http://acm.sdut.edu.cn:8080/vjudge/contest/view.action?cid=203#problem/D 以前用字典树做过 #include <string.h> #include <stdio.h> #include <string> #include <map> using namespace std; int main() { ]; int n,m,sum,l; ) { sum=; scanf("%d&…

M - Violet Snow Gym - 101350M Every year, an elephant qualifies to the Arab Collegiate Programming Competition. He graduated this year, but that’s irrelephant. What’s important is that the location of the competition might not have been the same ever…