(java)Word Pattern
来源:互联网 发布:彩虹易支付源码 编辑:程序博客网 时间:2024/06/16 10:56
Given a pattern
and a string str
, find if str
follows the same pattern.
Here follow means a full match, such that there is a bijection between a letter in pattern
and a non-empty word in str
.
Examples:
- pattern =
"abba"
, str ="dog cat cat dog"
should return true. - pattern =
"abba"
, str ="dog cat cat fish"
should return false. - pattern =
"aaaa"
, str ="dog cat cat dog"
should return false. - pattern =
"abba"
, str ="dog dog dog dog"
should return false.
Notes:
You may assume pattern
contains only lowercase letters, and str
contains lowercase letters separated by a single space.
思路:本题就是实时维护一个数据字典,现有字典里如果有pattern中对应的元素,则判断str中对应位置的子串是否与字典中的一样,如果没有,则将此匹配规则加入到字典中。
注意:在字典中的索引项没有pattern中对应的位置的字母时,还要判断此字母在str中对应的子串是否在字典有含有
代码如下(已通过leetcode)
public class Solution {
public boolean wordPattern(String pattern, String str) {
String[] strs=str.split(" ");
if(pattern.length()!=strs.length) return false;
String temp="";
Map<Character,String>map=new HashMap<Character,String>();
for(int i=0;i<strs.length;i++) {
if(map.containsKey(pattern.charAt(i)))
{
if(map.get(pattern.charAt(i)).equals(strs[i])) temp+=strs[i];
else return false;
}
else {
if(map.containsValue(strs[i])) return false;
else {
map.put(pattern.charAt(i), strs[i]);
temp+=strs[i];
}
}
temp+=" ";
}
temp=temp.substring(0, temp.length()-1);
System.out.println(temp);
if(str.equals(temp)) return true;
else return false;
}
}
- (java)Word Pattern
- [leetcode-290]Word Pattern(java)
- LeetCode 290 : Word Pattern (Java)
- Leetcode:290. Word Pattern(JAVA)
- Word Pattern
- Word Pattern
- Word Pattern
- Word Pattern
- Word Pattern
- Word Pattern
- Word Pattern
- Word Pattern
- Word Pattern
- Word Pattern
- Word Pattern
- Word Pattern
- word pattern
- Word Pattern
- 电话一点通:基础电话用语(2)
- Error:Cause: peer not authenticated 异常
- C++回调机制实现(转)
- ROS学习小结(一):ROS安装
- 2015年十大热门Android开源新项目
- (java)Word Pattern
- 【代码笔记】iOS-淡出淡入效果
- iOS适配流程规范
- Windows下LuaJIT的编译和使用,将Lua脚本编译为bytecode
- 定时器倒计时功能
- 18-《电子入门趣谈》第三章_电子世界中的五官---传感器-3.2.3霍尔传感器
- lynx
- Apache Shiro 角色和权限
- UINavigationController push到第二界面,平移手势右滑可退回到第一界面