给一字符串,问最少加几个字符可以让它成为回文串
比如 Ab3bd 最少需要两个字符可以成为回文串 dAb3bAd
思路:
动态规划 DP[i][j] 意味着从 i 到 j 这段字符变为回文串最少要几个字符,枚举子串长。
if str[i] == str[j]:
DP[i][j] = DP[i + 1][j - 1]
else:
DP[i][j] = min( DP[i +...
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其他好文 时间:
2014-07-19 02:35:45
阅读次数:
198
边吃边敲,效率就是高
代码如下:
#include
#include
#define MAX 1000050
char s[MAX],ss[MAX*2];
int p[MAX*2];
int min(int a,int b){return a>b?b:a;}
int main()
{
int i,id,mx,max,n,j;
j=1;
while(scanf("%s",s...
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其他好文 时间:
2014-07-19 02:31:25
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166
Given a strings, partitionssuch that every substring of the partition is a palindrome.Return the minimum cuts needed for a palindrome partitioning ofs...
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其他好文 时间:
2014-07-19 00:05:43
阅读次数:
200
/*
H - 简单dp 例题扩展
Time Limit:3000MS Memory Limit:65536KB 64bit IO Format:%I64d & %I64u
Submit
Status
Description
A palindrome is a symmetrical string, that is, a string read identically from ...
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其他好文 时间:
2014-07-18 22:23:07
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235
Palindrome NumberDetermine whether an integer is a palindrome. Do this without extra space.click to show spoilers.Some hints:Could negative integers b...
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其他好文 时间:
2014-07-18 15:17:26
阅读次数:
201
??
Description
Problem H: Partitioning by Palindromes
We say a sequence of characters is a palindrome if it is the same written forwards and backwards. For example, 'racecar' is a palindrome,...
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其他好文 时间:
2014-07-18 15:13:10
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266
Palindrome
Time Limit: 3000MS
Memory Limit: 65536K
Total Submissions: 51913
Accepted: 17877
Description
A palindrome is a symmetrical string, that is, a string read ide...
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其他好文 时间:
2014-07-18 12:21:25
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207
Given a strings, partitionssuch that every substring of the partition is a palindrome.Return all possible palindrome partitioning ofs.For example, giv...
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其他好文 时间:
2014-07-18 12:12:12
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222
Problem: Implement a function to check if a singly linked list is a palindrome.思路:最简单的方法是 Reverse and compare.另外一种非常经典的办法是用 Recursive 的思路,把一个list看成这种形...
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其他好文 时间:
2014-07-16 17:41:23
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188
Palindrome PartitioningGiven a strings, partitionssuch that every substring of the partition is a palindrome.Return all possible palindrome partitioni...
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其他好文 时间:
2014-07-16 17:41:15
阅读次数:
173