简单栈题 #include<bits/stdc++.h> using namespace std; int main() { int cas;cin>>cas;getchar(); string ss; while(cas--) { stack<char>s;char ch; getline(cin,ss);; ;i<ss.size();i++) { // printf("%c ",ss[i]); if(ss[i]=='('||ss[i]=='…

题意:给出包含"()"和"[]"的括号序列,判断是否合法. 用栈来完成,注意空串就行. #include<iostream> #include<string> #include<cstring> #include<stack> using namespace std; stack<char> sta; string s; int solve() { char str; ] == ; else { int l…

题目描述: 原题:https://vjudge.net/problem/UVA-673 题目思路: 1.水题 2.栈+模拟 3.坑在有空串 AC代码 #include <iostream> #include <stack> using namespace std; int main(int argc, char *argv[]) { int t; scanf("%d",&t); getchar(); while(t--) { string buf; st…

题目链接:https://vjudge.net/contest/171027#problem/E Yes的输出条件: 1. 空字符串 2.形如()[]; 3.形如([])或者[()] 分析: 1.设置一个变量flag,初始值为1 (注意初始化的位置): 2.括号的左半边入栈: 3.若发现括号右半边的时候判断栈顶是否是对应的左半边(是:删除栈顶元素,否:flag=1,不是平衡的括号)!!!在进行这项判断之前一定要判断栈是不是空的,否则会出现错误,任何与栈有关的删除都是: 4.最后还要判断栈是不是空…

Leetcode 856. Score of Parentheses 括号得分(栈) 题目描述 字符串S包含平衡的括号(即左右必定匹配),使用下面的规则计算得分 () 得1分 AB 得A+B的分,比如()()得2分 (A) 得2A分, 比如(()())得2(1+1)分 测试样例 Example 1: Input: "()" Output: 1 Example 2: Input: "(())" Output: 2 Example 3: Input: "()(…

原题链接 http://acm.csu.edu.cn/OnlineJudge/problem.php?id=1809 Description Bobo has a balanced parenthesis sequence P=p1 p2…pn of length n and q questions. The i-th question is whether P remains balanced after pai and pbi  swapped. Note that questions ar…

Parenthesis Problem Description: Bobo has a balanced parenthesis sequence P=p1 p2-pn of length n and q questions. The i-th question is whether P remains balanced after pai and pbi swapped. Note that questions are individual so that they have no affec…

Flipping Parentheses 题目连接: http://codeforces.com/gym/100803/attachments Description A string consisting only of parentheses '(' and ')' is called balanced if it is one of the following. • A string "()" is balanced. • Concatenation of two balance…

JavaScript: 世界上最被误解的语言 JavaScript: The Wrrrld's Most Misunderstood Programming Language Douglas Crockford www.crockford.com JavaScript, 亦称为 Mocha.LiveScript,也叫做JScript ECMAScript,是世界上流行的编程语言之一.事实上世界上差不多每台个人电脑都至少安装了一个JavaScript解释器.JavaScript的流行完全在于它作为…

题目链接:http://acm.csu.edu.cn/csuoj/problemset/problem?pid=1809 Bobo has a balanced parenthesis sequence P=p 1 p 2…p n of length n and q questions. The i-th question is whether P remains balanced after p ai and p bi  swapped. Note that questions are ind…