32 lines
670 B
C++
32 lines
670 B
C++
#include <string>
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#include <vector>
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class Solution {
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public:
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bool isValid(const std::string& s)
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{
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std::vector<char> st;
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for (auto c : s) {
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switch (c) {
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case '(':
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st.push_back(')');
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break;
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case '{':
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st.push_back('}');
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break;
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case '[':
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st.push_back(']');
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break;
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default:
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if (st.empty() || st.back() != c) {
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return false;
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}
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st.pop_back();
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break;
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}
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}
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return st.empty();
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}
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};
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