Description A subsequence of a given sequence is the given sequence with some elements (possible none) left out. Given a sequence X = < x1, x2, ..., xm > another sequence Z = < z1, z2, ..., zk > is a subsequence of X if there exists a strictly…

2017-08-06 15:41:04 writer:pprp 刚开始学dp,集训的讲的很难,但是还是得自己看,从简单到难,慢慢来(如果哪里有错误欢迎各位大佬指正) 题意如下: 给两个字符串,找到其中大的公共子序列,每个样例输出一个数: 最长公共子串(Longest Common Substirng)和最长公共子序列(Longest Common Subsequence,LCS)的区别为: 子串是串的一个连续的部分,子序列则是从不改变序列的顺序,而从序列中去掉任意的元素而获得新的序列: 也就是说…

重温世界杯 Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 8018    Accepted Submission(s): 2819 Problem Description 世界杯结束了,意大利人连本带利的收回了法国人6年前欠他们的债,捧起了大力神杯,成就了4星意大利.世界杯虽然结束了,但是这界世界杯给我们还是留下许多值得回忆的东西.比如…

17-单调递增最长子序列 内存限制:64MB 时间限制:3000ms Special Judge: No accepted:21 submit:49 题目描述: 求一个字符串的最长递增子序列的长度 如:dabdbf最长递增子序列就是abdf,长度为4 输入描述: 第一行一个整数0<n<20,表示有n个字符串要处理 随后的n行,每行有一个字符串,该字符串的长度不会超过10000 输出描述: 输出字符串的最长递增子序列的长度 样例输入: 复制 3 aaa ababc abklmncdefg 样例输…

1. 问题描述 子串应该比较好理解,至于什么是子序列,这里给出一个例子:有两个母串 cnblogs belong 比如序列bo, bg, lg在母串cnblogs与belong中都出现过并且出现顺序与母串保持一致,我们将其称为公共子序列.最长公共子序列(Longest Common Subsequence, LCS),顾名思义,是指在所有的子序列中最长的那一个.子串是要求更严格的一种子序列,要求在母串中连续地出现.在上述例子的中,最长公共子序列为blog(cnblogs, belong),最长公…

Common Subsequence Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 18765    Accepted Submission(s): 7946 Problem Description A subsequence of a given sequence is the given sequence with some ele…

Common Subsequence Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 55301    Accepted Submission(s): 25537 Problem Description A subsequence of a given sequence is the given sequence with some el…

最长子序列和的问题非常easy: 就是一个数组,求出当中当中连续的某一段和,而这一段和是全部的连续段和的最大的值.求出这个值. 先说复杂度最高的:O(n3) 直接上代码,非常easy的: // // main.cpp // SumSequence // // Created by Alps on 14-7-23. // Copyright (c) 2014年 chen. All rights reserved. // #include <iostream> using namespace st…

描述 A subsequence of a given sequence is the given sequence with some elements (possible none) left out. Given a sequence X = <x1, x2, ..., xm> another sequence Z = <z1, z2, ..., zk> is a subsequence of X if there exists a strictly increasing s…

Problem Description A subsequence of a given sequence is the given sequence with some elements (possible none) left out. Given a sequence X = <x1, x2, ..., xm> another sequence Z = <z1, z2, ..., zk> is a subsequence of X if there exists a stri…