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回文树【Palindromic
【python学习记录5】Longest
Palindromic
Substring
问题描述GivenastringS,findthelongestpalindromicsubstringinS.YoumayassumethatthemaximumlengthofSis1000,andthereexistsoneuniquelongestpalindromicsubstring.详细问题代码实现classSolution(object):deflongestPalindrome(
hitsunbo
·
2020-03-22 05:58
模板 - 字符串 - 回文自动机
节点:表示一个回文串,这个回文串在\(s\)中出现过,这个回文串的一半为这个节点所在的
回文树
的树根不断走ch到达这个节点时途径的边依次连起来,注意有奇数长度和偶数长度的区
KisekiPurin2019
·
2020-03-21 13:00
Longest
Palindromic
Substring
DescriptionGivenastrings,findthelongestpalindromicsubstringins.Youmayassumethatthemaximumlengthofsis1000.Example:Input:"babad"Output:"bab"Note:"aba"isalsoavalidanswer.Example:Input:"cbbd"Output:"bb"So
Nancyberry
·
2020-03-21 02:22
Longest
Palindromic
Substring
/**中心扩散法:如果中心字符串s是回文,那么以中心对称的字符串向左右两边扩展s1,如果左右两边字符关于中心对称,那么s1也是回文,遍历所有中心点,重复上述过程,找到最长回文子串。中心对称分两种情况,奇数个字符以某个字母对称;偶数个字符以中间两个字符对称时间复杂度:O(n^2)空间复杂度:O(1)http://blog.csdn.net/qustdrjhj/article/details/7542
larrymusk
·
2020-03-20 16:14
[LeetCode OJ]- Longest
Palindromic
Substring
题目:https://leetcode.com/problems/longest-
palindromic
-substring/description/给一个字符串,求最长回文串。
其中一个cc
·
2020-03-16 13:04
LeetCode每日一题:longest
palindromic
substring
问题描述GivenastringS,findthelongestpalindromicsubstringinS.YoumayassumethatthemaximumlengthofSis1000,andthereexistsoneuniquelongestpalindromicsubstring.问题分析我们可以采用递归的方式,找每个字符为中心的最长回文子串,用一个全局变量(写代码应该尽量避免全局
yoshino
·
2020-03-15 06:12
Longest
Palindromic
Substring
题目Givenastrings,findthelongestpalindromicsubstringins.Youmayassumethatthemaximumlengthofsis1000.Example:Input:"babad"Output:"bab"Note:"aba"isalsoavalidanswer.Example:Input:"cbbd"Output:"bb"要找一个字符串中的最长
persistent100
·
2020-03-14 13:35
Longest
Palindromic
Substring解题报告
Description:Givenastrings,findthelongestpalindromicsubstringins.Youmayassumethatthemaximumlengthofsis1000.Example:Input:"babad"Output:"bab"Note:"aba"isalsoavalidanswer.Input:"cbbd"Output:"bb"Link:http
黑山老水
·
2020-03-10 04:49
Longest
Palindromic
Substring
medium,Array/StringQuestion:给定字符串s,返回最长回文子字符串ForexampleInput:"babad"Output:"bab"Note:"aba"isalsoavalidanswer.Input:"cbbd"Output:"bb"Solution抓住回文关于中心对称的特点(中心可能在两个字母之间)classSolution(object):deflongestPa
穿越那片海
·
2020-03-10 00:51
Longest
Palindromic
Substring
Givenastrings,findthelongestpalindromicsubstringins.Youmayassumethatthemaximumlengthofsis1000.Example:Input:"babad"Output:"bab"Note:"aba"isalsoavalidanswer.一刷Manacher'sAlgorithmJava:Manacher:TimeCompl
Jeanz
·
2020-03-08 07:52
Leetcode--Longest
Palindromic
Substring
5.LongestPalindromicSubstringclassSolution{public:stringlongestPalindrome(strings){intn=s.size();boolf[n][n];fill_n(&f[0][0],n*n,false);//用vector会超时//vector>f(n,vector(n,false));intmax_len=1,start_ind
zthh
·
2020-03-07 18:49
【力扣-每日小练】5. 最长回文子串 (python)
5.最长回文子串题目链接:https://leetcode-cn.com/problems/longest-
palindromic
-substring/难度:中等题目描述给定一个字符串s,找到s中最长的回文子串
正午12:00
·
2020-03-07 14:40
力扣练习-中等
最长回文子串(Longest
Palindromic
Substring)
LeetCode.jpg5.最长回文子串5.最长回文子串给定一个字符串s,找到s中最长的回文子串。你可以假设s的最大长度为1000。示例1:输入:"babad"输出:"bab"注意:"aba"也是一个有效答案。示例2:输入:"cbbd"输出:"bb"切题一、Clarification求最长回文子串,这里有几个特殊情况需要考虑1、空字符串,"",最长回文子串""2、单个字符,"a",最长回文子串"a
leacoder
·
2020-03-06 11:36
Longest
Palindromic
Substring
题目:GivenastringS,findthelongestpalindromicsubstringinS.YoumayassumethatthemaximumlengthofSis1000,andthereexistsoneuniquelongestpalindromicsubstring.publicclassSolution{publicStringlongestPalindrome(St
juexin
·
2020-03-05 00:22
Longest
Palindromic
Subsequence
MediumGivenastrings,findthelongestpalindromicsubsequence'slengthins.Youmayassumethatthemaximumlengthofsis1000.Example1:Input:"bbbab"Output:4Onepossiblelongestpalindromicsubsequenceis"bbbb".Example2:In
greatfulltime
·
2020-03-04 17:39
Palindromic
Substrings
Givenastring,yourtaskistocounthowmanypalindromicsubstringsinthisstring.Thesubstringswithdifferentstartindexesorendindexesarecountedasdifferentsubstringseventheyconsistofsamecharacters.Example1:Input:"
persistent100
·
2020-03-03 07:44
Palindromic
Substrings 回文子串
Givenastring,yourtaskistocounthowmanypalindromicsubstringsinthisstring.Thesubstringswithdifferentstartindexesorendindexesarecountedasdifferentsubstringseventheyconsistofsamecharacters.给定一字符串,统计其含有的回文子
这就是一个随意的名字
·
2020-03-03 04:01
【算法】Longest
Palindromic
Substring
最近刷LeetCode遇到一个比较有意思的题目(LongestPalindromicSubstring),求一个字符串的最大回文子串。题目本身并不难,但需要理清思路才好理解,借此文记录下。题目Givenastrings,findthelongestpalindromicsubstringins.Youmayassumethatthemaximumlengthofsis1000.给定一个字符串,找出
jiantao88
·
2020-03-01 16:32
Palindromic
Substrings
Givenastring,yourtaskistocounthowmanypalindromicsubstringsinthisstring.Thesubstringswithdifferentstartindexesorendindexesarecountedasdifferentsubstringseventheyconsistofsamecharacters.Example1:Input:"
Jeanz
·
2020-03-01 06:08
Longest
Palindromic
Substring
对hard类型的题,表示目前实在是hold不住,暂时先不刷啊。等我刷完easy和medium回头再战!2016/10/10编程语言是Java,代码托管在我的GitHub上,包括测试用例。欢迎各种批评指正!题目——LongestPalindromicSubstringGivenastringS,findthelongestpalindromicsubstringinS.Youmayassumetha
秋名山菜车手
·
2020-02-29 01:09
Longest
Palindromic
Substring
这道题常规做法,从任意位置向两边扫描,http://www.programcreek.com/2013/12/leetcode-solution-of-longest-
palindromic
-substring-java
DrunkPian0
·
2020-02-28 08:11
Leetcode - Longest
Palindromic
Substring
Question:Paste_Image.pngMycode:publicclassSolution{publicStringlongestPalindrome(Strings){if(s==null||s.length()==0)returnnull;intmax=1;//assumethateverysinglecharacterispalindromeStringlongestStr=""+
Richardo92
·
2020-02-27 06:15
Longest
Palindromic
Substring
Givenastrings,findthelongestpalindromicsubstringins.Youmayassumethatthemaximumlengthofsis1000.Input:"babad"Output:"bab"Note:"aba"isalsoavalidanswer.Input:"cbbd"Output:"bb"答案:funclongestPalindrome(_s:S
小伙鸡
·
2020-02-26 11:37
Longest
Palindromic
Subsequence
Givenastrings,findthelongestpalindromicsubsequence'slengthins.Youmayassumethatthemaximumlengthofsis1000.Example1:Input:"bbbab"Output:4Onepossiblelongestpalindromicsubsequenceis"bbbb".第一感觉就是DP,可惜写不出来,只
DrunkPian0
·
2020-02-24 23:45
Longest
Palindromic
Substring
链接classSolution{publicStringlongestPalindrome(Strings){//字符串转数组char[]chars=s.toCharArray();intlen=s.length();//记录回文数组长度,而不是开头和结尾,从外圈向内圈包围,不断缩小范围while(len>=0){for(inti=0;i+len-1
Wenyue_offer
·
2020-02-23 04:56
【PAT A1024】
Palindromic
Number (25)(25 分)
AnumberthatwillbethesamewhenitiswrittenforwardsorbackwardsisknownasaPalindromicNumber.Forexample,1234321isapalindromicnumber.Allsingledigitnumbersarepalindromicnumbers.Non-palindromicnumberscanbepaire
AdmondGuo
·
2020-02-21 16:01
Longest
Palindromic
Substring
题目GivenastringS,findthelongestpalindromicsubstringinS.YoumayassumethatthemaximumlengthofSis1000,andthereexistsoneuniquelongestpalindromicsubstring.解题之法//TimecomplexityO(n*n)classSolution{public:string
时光杂货店
·
2020-02-21 04:13
LeetCode 05 Longest
Palindromic
Substring
题目要求GivenastringS,findthelongestpalindromicsubstringinS.YoumayassumethatthemaximumlengthofSis1000,andthereexistsoneuniquelongestpalindromicsubstring. 题目翻译:给定一个字符串,找到最长的回文字串,假定字符串长度最大为1000,并存在唯一的最大回文子
SiyueLin
·
2020-02-20 15:37
Longest
Palindromic
Subsequence
题目Givenastrings,findthelongestpalindromicsubsequence'slengthins.Youmayassumethatthemaximumlengthofsis1000.Example1:Input:"bbbab"Output:4Onepossiblelongestpalindromicsubsequenceis"bbbb".Example2:Input:
BLUE_fdf9
·
2020-02-20 13:44
Longest
Palindromic
Subsequence
Givenastrings,findthelongestpalindromicsubsequence'slengthins.Youmayassumethatthemaximumlengthofsis1000.Example1:Input:"bbbab"Output:4Onepossiblelongestpalindromicsubsequenceis"bbbb".Example2:Input:"c
sherwin29
·
2020-02-19 21:35
LeetCode 最长回文子串 | 解二
最长回文子串题目来源:https://leetcode-cn.com/problems/longest-
palindromic
-substring/题目给定一个字符串s,找到s中最长的回文子串。
大梦三千秋
·
2020-02-19 18:03
python
LeetCode 最长回文子串
最长回文子串题目来源:https://leetcode-cn.com/problems/longest-
palindromic
-substring/题目给定一个字符串s,找到s中最长的回文子串。
大梦三千秋
·
2020-02-18 06:24
python
Palindromic
Substrings
MediumGivenastring,yourtaskistocounthowmanypalindromicsubstringsinthisstring.Thesubstringswithdifferentstartindexesorendindexesarecountedasdifferentsubstringseventheyconsistofsamecharacters.Example1:I
greatfulltime
·
2020-02-17 19:32
Palindromic
Substrings
最大回文串正好让我回顾一下DP,动态规划比较经典的题目Output:3Explanation:Threepalindromicstrings:"a","b","c".Input:"aaa"Output:6Explanation:Sixpalindromicstrings:"a","a","a","aa","aa","aaa".总之就是一个线性规划的问题,注意递归条件:if(s[start]=s[e
腹黑君
·
2020-02-16 11:51
Longest
Palindromic
Substring(最长的回文子串)
Givenastrings,findthelongestpalindromicsubstringins.Youmayassumethatthemaximumlengthofsis1000.给定一个字符串s,找到s中最长的回文子字符串。您可以假设s的最大长度为1000Example:Input:"babad"Output:"bab"Note:"aba"isalsoavalidanswer.Examp
安东可
·
2020-02-10 11:40
General
Palindromic
Number (20) (C语言实现)
我的PAT系列文章更新重心已移至Github,欢迎来看PAT题解的小伙伴请到GithubPages浏览最新内容(本篇文章链接)。此处文章目前已更新至与GithubPages同步。欢迎star我的repo。题目AnumberthatwillbethesamewhenitiswrittenforwardsorbackwardsisknownasaPalindromicNumber.Forexample
OliverLew
·
2020-02-07 18:11
[LeetCode 5] Longest
Palindromic
Substring (Medium)
GivenastringS,findthelongestpalindromicsubstringinS.YoumayassumethatthemaximumlengthofSis1000,andthereexistsoneuniquelongestpalindromicsubstring.ExampleGiventhestring="abcdzdcab",return"cdxdc".思路1因为有S
蓝眼睛灰
·
2020-02-07 08:24
Palindromic
Number (25) (C语言实现)
我的PAT系列文章更新重心已移至Github,欢迎来看PAT题解的小伙伴请到GithubPages浏览最新内容(本篇文章链接)。此处文章目前已更新至与GithubPages同步。欢迎star我的repo。题目AnumberthatwillbethesamewhenitiswrittenforwardsorbackwardsisknownasaPalindromicNumber.Forexample
OliverLew
·
2020-02-06 13:27
Longest
Palindromic
Substring
Givenastrings,findthelongestpalindromicsubstringins.Youmayassumethatthemaximumlengthofsis1000.Example1:Input:"babad"Output:"bab"Note:"aba"isalsoavalidanswer.Example2:Input:"cbbd"Output:"bb"//非dp方法clas
强威
·
2020-02-04 20:00
PAT甲级真题 1019 General
Palindromic
Number (20分) C++实现(注意测试点2、4)
题目AnumberthatwillbethesamewhenitiswrittenforwardsorbackwardsisknownasaPalindromicNumber.Forexample,1234321isapalindromicnumber.Allsingledigitnumbersarepalindromicnumbers.Althoughpalindromicnumbersarem
zhang35
·
2020-02-04 09:45
PAT
算法
Longest
Palindromic
Substring
问题Givenastrings,findthelongestpalindromicsubstringins.Youmayassumethatthemaximumlengthofsis1000.例子**Input:**"babad"**Output:**"bab"**Note:**"aba"isalsoavalidanswer.Input:"cbbd"**Output:**"bb"分析遍历字符串。从
RobotBerry
·
2020-02-02 07:24
PAT Advanced 1024
Palindromic
Number (25分)
AnumberthatwillbethesamewhenitiswrittenforwardsorbackwardsisknownasaPalindromicNumber.Forexample,1234321isapalindromicnumber.Allsingledigitnumbersarepalindromicnumbers.Non-palindromicnumberscanbepaire
LittlePage
·
2020-02-01 01:00
Longest
Palindromic
Substring
一、题目说明LongestPalindromicSubstring,求字符串中的最长的回文。Difficuty是Medium二、我的实现经过前面4个题目,我对边界考虑越来越“完善”了。总共提交了5次:第1、2次:WrongAnswer主要是"cbbd"错误了,重复的判断逻辑上出了点小问题第3、4次:TimeLimitExceeded我本地代码运行没问题的,但是提交后,报错。给了一个超长的用例:32
siwei718
·
2020-01-26 11:00
Longest
Palindromic
Substring
最长的回文子串。题意是给一个字符串,请输出其中最长的回文子串。例子Example1:Input:"babad"Output:"bab"Note:"aba"isalsoavalidanswer.Example2:Input:"cbbd"Output:"bb"这个题有两种做法,一个是中心扩散法,一个是DP。我暂时只给出中心扩散法怎么做,DP我自己没做明白。无论是DP还是中心扩散法,都需要注意两种不同的
朝鲜冷面杀手
·
2020-01-15 02:00
LeetCode 5 迅速判断回文串的曼切斯特算法
findthelongestpalindromicsubstringins.Youmayassumethatthemaximumlengthofsis1000.Link:https://leetcode.com/problems/longest-
palindromic
-substring
TechFlow2019
·
2020-01-12 10:00
最长回文子串(python)
最长回文子串来源:力扣(LeetCode)链接:https://leetcode-cn.com/problems/longest-
palindromic
-substring难度:中等(我觉得这题完全配得上困难
luozx207
·
2020-01-10 19:00
Longest
Palindromic
Substring
题目给定一个字符串s,在s中找到最长的回文子串,s的最大长度是1000。题目难度:中等描述MediumGivenastrings,findthelongestpalindromicsubstringins.Youmayassumethatthemaximumlengthofsis1000.Example1:Input:"babad"Output:"bab"Note:"aba"isalsoavali
随时学丫
·
2020-01-08 20:56
Longest
Palindromic
Substring
LongestPalindromicSubstring英文原文Givenastrings,findthelongestpalindromicsubstringins.Youmayassumethatthemaximumlengthofsis1000.Example1:Input:"babad"Output:"bab"Note:"aba"isalsoavalidanswer.Example2:Inp
Kong_Mt
·
2020-01-08 15:09
Longest
Palindromic
Substring
最长回文子串Givenastrings,findthelongestpalindromicsubstringins.Youmayassumethatthemaximumlengthofsis1000.Example:Input:"babad"Output:"bab"Note:"aba"isalsoavalidanswer.Example:Input:"cbbd"Output:"bb"大致意思:给定
YoungDayo
·
2020-01-07 04:11
2019-08-21 A1019 General
Palindromic
Number
这道题思路是非常简单的,但是一些细节很容易忽视,比如Noticethattheremustbenoextraspaceattheendofoutput.这个要求,直接printf("%d",v[i]);是不可以的,必须分开来实现printf("%d",v[j]);if(j!=0)printf("");还有就是一定要注意到题目中说的0也是回文数if(index==0)printf("0");
JO炮
·
2020-01-07 01:49
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