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20. Valid Parentheses
Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. The brackets must close in the ...
分类:其他好文   时间:2017-07-14 13:32:26    阅读次数:115
Brackets(区间dp)
Brackets Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 8017 Accepted: 4257 Description We give the following inductive definition of a “r ...
分类:其他好文   时间:2017-07-12 23:09:30    阅读次数:159
UVA 2451 Brackets sequence
题目链接:https://icpcarchive.ecs.baylor.edu/index.php?option=com_onlinejudge&Itemid=8&category=98&page=show_problem&problem=452 用dp[i][j] 记录一段序列,starts fr ...
分类:其他好文   时间:2017-06-22 00:14:49    阅读次数:203
POJ 2955?Brackets
Brackets Description We give the following inductive definition of a “regular brackets” sequence: the empty sequence is a regular brackets sequence, i ...
分类:其他好文   时间:2017-06-21 09:35:17    阅读次数:154
POJ 2955 Brackets (区间dp 括号匹配)
Brackets Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 3951 Accepted: 2078 Description We give the following inductive definition of a “r ...
分类:其他好文   时间:2017-06-17 13:47:38    阅读次数:222
<LeetCode OJ> 20. Valid Parentheses
Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. The brackets must close in the ...
分类:其他好文   时间:2017-06-16 22:09:38    阅读次数:255
LeetCode——Valid Parentheses
Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. The brackets must close in the ...
分类:其他好文   时间:2017-06-11 12:08:21    阅读次数:137
CodeForces 550E Brackets in Implications(构造)
【题目链接】:click here~~ 【题目大意】给定一个逻辑运算符号a->b:当前仅当a为1b为0值为0,其余为1,构造括号。改变运算优先级使得最后结果为0 【解题思路】: todo~~ /* 思路: 1.假设最后一位是1,不管怎样结果不会为0.puts("NO"); 2.那么有解的情况下最后一 ...
分类:其他好文   时间:2017-06-11 10:21:59    阅读次数:152
leetcode栈--5、valid-parentheses(有效括号)
题目描述 Given a string containing just the characters'(',')','{','}','['and']', determine if the input string is valid. The brackets must close in the co ...
分类:其他好文   时间:2017-06-06 23:42:19    阅读次数:383
Array types are now written with the brackets around the element type问题的解决方法
在xcode6.1中来编写swift空数组时。出现的的这个问题,依照官方 Swift 教程《The Swift Programming Language》来写 let emptyArray = String[]() 时会提示“Array types are now written with the ...
分类:其他好文   时间:2017-06-03 14:09:27    阅读次数:138
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