LeetCode Valid Parentheses
来源：互联网 发布：凤城高中淘宝屋 编辑：程序博客网 时间：2024/06/05 15:47
链接： https://oj.leetcode.com/problems/valid-parentheses/
括号匹配。用栈
class Solution{public:bool isValid(string s){stack<char> sta;int n=s.size();for(int i=0;i<n;i++){char t=s[i];if(t=='('||t=='['||t=='{')sta.push(t);else{if(sta.empty())return false;if((!sta.empty())&&( (sta.top()=='('&&t==')')||(sta.top()=='['&&t==']')||(sta.top()=='{'&&t=='}'))){sta.pop();continue;}if((!sta.empty())&&sta.top()!=t)return false;}}if(sta.empty()) return true;else return false;}}; 0 0
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