LC 890. Find and Replace Pattern
You have a list of words
and a pattern
, and you want to know which words in words
matches the pattern.
A word matches the pattern if there exists a permutation of letters p
so that after replacing every letter x
in the pattern with p(x)
, we get the desired word.
(Recall that a permutation of letters is a bijection from letters to letters: every letter maps to another letter, and no two letters map to the same letter.)
Return a list of the words in words
that match the given pattern.
You may return the answer in any order.
Example 1:
Input: words = ["abc","deq","mee","aqq","dkd","ccc"], pattern = "abb"
Output: ["mee","aqq"]
Explanation: "mee" matches the pattern because there is a permutation {a -> m, b -> e, ...}.
"ccc" does not match the pattern because {a -> c, b -> c, ...} is not a permutation,
since a and b map to the same letter.
Note:
1 <= words.length <= 50
1 <= pattern.length = words[i].length <= 20
Runtime: 4 ms, faster than 62.45% of C++ online submissions for Find and Replace Pattern.
注意一一对应要用两个字典。
class Solution {
public:
vector<string> findAndReplacePattern(vector<string>& words, string pattern) {
vector<string> ret;
for(auto word : words){
if(word.size() != pattern.size()) continue;
unordered_map<char,char> mp_w2p;
unordered_map<char,char> mp_p2w;
bool shouldput = true;
for(int i=; i<word.size(); i++){
if(!mp_w2p.count(word[i]) && !mp_p2w.count(pattern[i])){
mp_w2p[word[i]] = pattern[i];
mp_p2w[pattern[i]] = word[i];
} else if(!mp_w2p.count(word[i]) || !mp_p2w.count(pattern[i])) {
shouldput = false;
break;
}else if(mp_w2p[word[i]] != pattern[i] || mp_p2w[pattern[i]] != word[i]){
shouldput = false;
break;
}
}
if(shouldput) ret.push_back(word);
}
return ret;
}
};
LC 890. Find and Replace Pattern的更多相关文章
- 890. Find and Replace Pattern - LeetCode
Question 890. Find and Replace Pattern Solution 题目大意:从字符串数组中找到类型匹配的如xyy,xxx 思路: 举例:words = ["ab ...
- 890. Find and Replace Pattern找出匹配形式的单词
[抄题]: You have a list of words and a pattern, and you want to know which words in words matches the ...
- [LeetCode] 890. Find and Replace Pattern 查找和替换模式
You have a list of words and a pattern, and you want to know which words in words matches the patter ...
- Leetcode 890. Find and Replace Pattern
把pattern映射到数字,也就是把pattern标准化. 比如abb和cdd如果都能标准化为011,那么就是同构的. class Solution: def findAndReplacePatter ...
- 【LeetCode】890. Find and Replace Pattern 解题报告(Python & C++)
作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 字典+set 单字典 日期 题目地址:https:/ ...
- [Swift]LeetCode890. 查找和替换模式 | Find and Replace Pattern
You have a list of words and a pattern, and you want to know which words in words matches the patter ...
- LC 833. Find And Replace in String
To some string S, we will perform some replacement operations that replace groups of letters with ne ...
- 【ARTS】01_16_左耳听风-20190225~20190303
ARTS: Algrothm: leetcode算法题目 Review: 阅读并且点评一篇英文技术文章 Tip/Techni: 学习一个技术技巧 Share: 分享一篇有观点和思考的技术文章 Algo ...
- All LeetCode Questions List 题目汇总
All LeetCode Questions List(Part of Answers, still updating) 题目汇总及部分答案(持续更新中) Leetcode problems clas ...
随机推荐
- SpringMVC----视图层框架
Spring Web模型-视图-控制器(MVC)框架是围绕DispatcherServlet设计的,DispatcherServlet将接收的请求分派给应用程序.SpringMVC具有配置处理程序映射 ...
- fastadmin tp等模板变量在html中的js中如何使用?
<script> var a = {$b} </script>
- 第八章· Redis API 开发
Redis 开发 1.源码安装Python环境 Python官网:https://www.python.org/ #下载Python3.6.4安装包 [root@db03 ~]# wget https ...
- 第十五章·Kibana深入-Dev Tools及Lucene语法
Dev Tools介绍 Dev Tools 页面包含开发工具,您可以使用这些Dev Tools与Kibana中的数据进行交互. 原先的交互式控制台Sense,使用户方便的通过浏览器直接与Elastic ...
- Linux用户组管理及用户权限4
权限管理: ls -l rwxrwxrwx: 左三位:定义user(owner)的权限 中三位:定义group的权限 ...
- CNN for NLP
卷积神经网络在自然语言处理任务中的应用.参考链接:Understanding Convolutional Neural Networks for NLP(2015.11) Instead of ima ...
- Django :执行 python manage.py makemigrations 时报错 TypeError: __init__() missing 1 required positional argument: 'on_delete'
原因 执行命令 python manage.py makemigrations 报错 TypeError: __init__() missing 1 required positional argum ...
- strace分析启动流程
strace -ttt /usr/local/mysql/bin/mysqld 2>&1 |tee 1.log vi 1.log 1 1530183737.761709 execve(& ...
- Ribbon整合Consul,出现No instances available for XXX 异常
先贴代码: @RestController public class CallHelloController { @Autowired private LoadBalancerClient loadB ...
- 浏览器表单自动填充默认样式 - autofill问题解决
这不知道是个什么神仙网站,解决办法写的这么清楚,页面有这么让人舒服 https://lhajh.github.io/css/chrome/2018/04/17/The-chrome-browser-f ...