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leetcode 32. Longest Valid Parentheses
Given a string containing just the characters'('and')', find the length of the longest valid (well-formed) parentheses substring.For"(()", the longest...
分类:其他好文   时间:2015-02-05 00:41:45    阅读次数:200
LeetCode --- 32. Longest Valid Parentheses
题目链接:Longest Valid Parentheses Given a string containing just the characters '(' and ')', find the length of the longest valid (well-formed) parentheses substring. For "(()", the longest valid paren...
分类:其他好文   时间:2015-02-04 23:22:51    阅读次数:189
【POJ3764】The xor-longest Path Trie树+异或性质
题意: 多组数据、 给你一颗树, 然后求一条最长异或路径, 异或路径长度定义为两点间简单路径上所有边权的异或和。 题解: 首先无根树转有根树再在树上跑一遍算出每个点到根的异或和。 然后两点间异或路径长度就是a[i]*a[j]。 因为lca之前那一段都被异或了两次搞没了。 然后求个线性基,然后随便搞搞就可以?可以WA了! 因为那么算哪是简单路径啊,或者说,那特喵的...
分类:其他好文   时间:2015-02-04 16:40:01    阅读次数:228
【leetcode】Longest Palindromic Substring (middle) 经典
Given a stringS, find the longest palindromic substring inS. You may assume that the maximum length ofSis 1000, and there exists one unique longest pa...
分类:其他好文   时间:2015-02-03 21:02:01    阅读次数:155
【leetcode】Longest Substring Without Repeating Characters (middle)
Given a string, find the length of the longest substring without repeating characters. For example, the longest substring without repeating letters fo...
分类:其他好文   时间:2015-02-03 16:46:32    阅读次数:112
Longest Substring Without Repeating Characters
#title#Longest Substring Without Repeating Characters #description:#Given a string, #find the length of the longest substring without #repeating chara...
分类:其他好文   时间:2015-02-03 13:09:35    阅读次数:136
[LeetCode]Longest Common Prefix
Q:Write a function to find the longest common prefix string amongst an array of strings. 这道题是要求一组字符串的最长相同前缀。思路很简单,一个一个扫描。 两种特殊情况如下: 1.若strs为空,则返回空字符串 2.若strs只含有一个字符串,则返回该字符串 下面为一般情况:依次取strs[0]的前1...
分类:其他好文   时间:2015-02-03 11:05:41    阅读次数:167
LeetCode - Longest Substring Without Repeating Characters
Given a string, find the length of the longest substring without repeating characters. For example, the longest substring without repeating letters for "abcabcbb" is "abc", which the length is 3. For ...
分类:其他好文   时间:2015-02-03 07:03:24    阅读次数:139
POJ 2533-Longest Ordered Subsequence(dp_最长上升子序列)
Longest Ordered Subsequence Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 35502   Accepted: 15572 Description A numeric sequence of ai is ordered if a1...
分类:其他好文   时间:2015-02-02 23:14:01    阅读次数:274
Leetcode Longest Valid Parentheses
Given a string containing just the characters'('and')', find the length of the longest valid (well-formed) parentheses substring.For"(()", the longest...
分类:其他好文   时间:2015-02-02 14:03:33    阅读次数:101
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