括弧匹配检验

Posted 2020-09-06 Grary

---恢复内容开始---

#include<stack>
#include<string>
#include<iostream>
using namespace std;
string s;
stack<int>str;

int main()
{
    cin>>s;
    for(int i=0;i<s.size();++i)
    {
        if(s[i]==‘(‘)str.push(1);
        if(s[i]==‘[‘)str.push(2);
        if(s[i]==‘)‘)
        {
            if(str.top()==2)
            {
                cout<<"Wrong";
                return 0;
            }
            else str.pop();
        }
        if(s[i]==‘]‘)
        {
            if(str.top()==1)
            {
                cout<<"Wrong";
                return 0;
            }
            else str.pop();
        }
    }
    if(!str.empty())cout<<"Wrong";
    else cout<<"OK";
    return 0;
}