Kallol Bairagikallolbairagi.hashnode.dev·Oct 12, 2023#20. Valid Parentheses [LeetCode Grind 75 in Java]class Solution { public boolean isValid(String s) { Stack<Character> st = new Stack<>(); for(char c : s.toCharArray()){ if(c == '(' || c == '{' || c == '[') st.push(c); else{ if(st.isEmpty(...LeetCode Grind 75 in JavaJavaAdd a thoughtful commentNo comments yetBe the first to start the conversation.