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Problem Distinct Subsequence
Problem Desciption : Given a stringSand a stringT, count the number of distinct subsequences ofTinS.A subsequence of a string is a new string which is...
分类:其他好文   时间:2014-07-07 19:39:07    阅读次数:206
算法——动态规划篇——最长公共子序列
问题描写叙述 最长公共子序列,英文缩写为LCS(Longest Common Subsequence)。其定义是,一个序列 S ,假设各自是两个或多个已知序列的子序列,且是全部符合此条件序列中最长的,则 S 称为已知序列的最长公共子序列。 解决最长公共子序列,一种经常使用的办法,就是穷举法,组...
分类:其他好文   时间:2014-07-03 07:09:44    阅读次数:255
Distinct Subsequences
题目 Given a string S and a string T, count the number of distinct subsequences of T in S. A subsequence of a string is a new string which is formed from the original string by deleting some...
分类:其他好文   时间:2014-06-30 09:36:18    阅读次数:192
LeetCode: Distinct Subsequences [115]
【题目】 Given a string S and a string T, count the number of distinct subsequences of T in S. A subsequence of a string is a new string which is formed from the original string by deleting some (can be none) of the characters without disturbing the relati...
分类:其他好文   时间:2014-06-29 07:27:17    阅读次数:210
最优子序列双射算法(optimal subsequence bijection OSB)
introduction 最近在做关于骨架匹配的东西,在骨架匹配中很重要的一点就是将相同类型的骨架点匹配在一起: 如上图所示,骨架匹配的关键就是将图中 1 2 3 .... A B C D ... a b c d ......
分类:其他好文   时间:2014-06-20 16:00:54    阅读次数:995
[LeetCode]Distinct Subsequences,解题报告
题目 Given a string S and a string T, count the number of distinct subsequences of T in S. A subsequence of a string is a new string which is formed from the original string by deleting some (can be...
分类:其他好文   时间:2014-06-08 14:49:14    阅读次数:347
ZOJ 2672 Fibonacci Subsequence(动态规划+hash)
题意:在给定的数组里,寻找一个最长的序列,满足ai-2+ai-1=ai。并输出这个序列。很容易想到一个DP方程dp[i][j]=max(dp[k][i])+1. (a[k]+a[i]==a[j],1=dp[1][5]。这样我们只需要在遍历数组的时候维护数组每个数的最大的下标即可。这里使用hash来做...
分类:其他好文   时间:2014-06-02 00:39:39    阅读次数:379
poj_1458_二维DP(LCS)
Common SubsequenceTime Limit: 1000MSMemory Limit: 10000KTotal Submissions: 36542Accepted: 14596DescriptionA subsequence of a given...
分类:其他好文   时间:2014-06-02 00:29:28    阅读次数:247
Distinct Subsequences
Given a stringSand a stringT, count the number of distinct subsequences ofTinS.A subsequence of a string is a new string which is formed from the orig...
分类:其他好文   时间:2014-05-30 15:58:40    阅读次数:187
HDU 2253 Longest Common Subsequence Again
其实这个题我还不会,学长给了一个代码交上去过了,据说用到了一种叫做位压缩的技术,先贴代码吧,以后看懂了再来写#include #include #define M 30005#define SIZE 128#define WORDMAX 3200#define BIT 32char s1[M], s...
分类:其他好文   时间:2014-05-29 18:07:53    阅读次数:549
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