Fixed now - Can anyone from leetcode team explain?
Vivek
48

This is getting submitted now, wondering if anyone from leetcode explain what was the issue?
Since last some months platform issues have been increased?

Why the below solution throws JasonParser error ? It was working some minutes back
https://leetcode.com/problems/longest-valid-parentheses/

public class Solution {

    public int longestValidParentheses(String s) {
        int maxans = 0;
        Stack<Integer> stack = new Stack<>();
        stack.push(-1);
        for (int i = 0; i < s.length(); i++) {
            if (s.charAt(i) == '(') {
                stack.push(i);
            } else {
                stack.pop();
                if (stack.empty()) {
                    stack.push(i);
                } else {
                    maxans = Math.max(maxans, i - stack.peek());
                }
            }
        }
        return maxans;
    }
}
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