tose33

leetcode.com/problems/valid-parentheses/ Valid Parentheses - LeetCode Level up your coding skills and quickly land a job. This is the best place to expand your knowledge and get prepared for your next interview. leetcode.com 스택사용 ool isValid(string s) { stack st; int len = s.size(); st.push(s[0]); for(int i = 1; i < len; i++) { // if it's closing if(s[i] == ')') { if(st.empty() || st.top() != '(..