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Luogu P1470 最长前缀 Longest Prefix
Luogu P1470 最长前缀 Longest Prefix "Portal(传送门)" 注释 这道题与 "上一篇博客" 的题几乎一样 解析 + 有点麻烦的地方就是字符串的输入 方法一:类dp Code cpp include include include include include def ...
分类:其他好文   时间:2019-09-06 15:52:49    阅读次数:81
LeetCode 1027. Longest Arithmetic Sequence
dp问题,一维是没法dp的,因为我们还要记录一个diff才能判断是否是Arithmetic Sequence。 dp[i][diff] 表示以 A[i] 结尾,等差为 diff 的最大长度。从这种角度来看本题和 LeetCode 300. Longest Increasing Subsequence ...
分类:其他好文   时间:2019-09-04 10:25:10    阅读次数:112
leetcode 543. Diameter of Binary Tree
Given a binary tree, you need to compute the length of the diameter of the tree. The diameter of a binary tree is the length of the longest path betwe ...
分类:其他好文   时间:2019-09-04 00:01:38    阅读次数:129
大数据之路【第十二篇】:数据挖掘--NLP文本相似度
一、LCS定义 ? 最长公共子序列(Longest Common Subsequence)? 一个序列S任意删除若干个字符得到的新序列T,则T叫做S的子序列? 两个序列X和Y的公共子序列中,长度最长的那个,定义为X和Y的最长公共子序列 – 字符串12455与245576的最长公共子序列为2455 – ...
分类:其他好文   时间:2019-09-03 16:13:54    阅读次数:167
BAPC 2018 Preliminaries-Isomorphic Inversion(字符串哈希)
Isomorphic Inversion 题目描述 Let s be a given string of up to 106 digits. Find the maximal k for which it is possible to partition s into k consecutive c ...
分类:其他好文   时间:2019-09-03 11:42:44    阅读次数:93
LeetCode 1143. Longest Common Subsequence
原题链接在这里:https://leetcode.com/problems/longest-common-subsequence/ 题目: Given two strings text1 and text2, return the length of their longest common sub ...
分类:其他好文   时间:2019-09-03 09:32:48    阅读次数:62
PAT甲级——A1104 Sum of Number Segments
Given a sequence of positive numbers, a segment is defined to be a consecutive subsequence. For example, given the sequence { 0.1, 0.2, 0.3, 0.4 }, we ...
分类:其他好文   时间:2019-09-01 10:42:46    阅读次数:77
Rolling The Polygon (2018-2019 ACM-ICPC, China Multi-Provincial Collegiate Programming Contest)(The 2019 Asia Yinchuan First Round Online Programming)
Bahiyyah has a convex polygon with nn vertices P0,P1,?,Pn?1P0,P1,?,Pn?1 in the counterclockwise order. Two vertices with consecutive indexes are adjac ...
分类:其他好文   时间:2019-09-01 10:37:36    阅读次数:80
【leetcode】1171. Remove Zero Sum Consecutive Nodes from Linked List
题目如下: Given the head of a linked list, we repeatedly delete consecutive sequences of nodes that sum to 0 until there are no such sequences. After doin ...
分类:其他好文   时间:2019-08-31 23:18:05    阅读次数:90
PAT 甲级 1040 Longest Symmetric String (25 分)(字符串最长对称字串,遍历)
1040 Longest Symmetric String (25 分) 1040 Longest Symmetric String (25 分) 1040 Longest Symmetric String (25 分) Given a string, you are supposed to out ...
分类:其他好文   时间:2019-08-31 10:29:26    阅读次数:72
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