Bug Report for validate-parentheses

[nitins-04]

Bug Report for https://neetcode.io/problems/validate-parentheses

Please describe the bug below and include any steps to reproduce the bug or screenshots if possible.

There is no testcase for a possible invalid parentheses. If there is an additional closing bracket, one's code should fail. I created the following solution that passed all test cases and was accepted despite it being an invalid solution when I created my own test case. Here is my solution that passed all test cases yet failed a testcase with "()]" by returning true: class Solution {
public:
bool isValid(string s) {
if (s[0] == ')' || s[0] == '}' || s[0] == ']') {
return false;;
}

    for (int i = 0; i < s.size(); i++) {
        if (s[i] == ')' || s[i] == '}' || s[i] == ']') {
            continue;
        }
        int idxToReach = i + 1;
        int index = i + 1;
        if (s[i] == '(') {
            while (idxToReach < s.size()) {
            if (s[index] == ')' && index == idxToReach) {
                break;
            }  else if (s[index] == '(' || s[index] == '{' || s[index] == '[') {
                idxToReach += 2;
            } else if (s[index] != ')' && index == idxToReach) {
                return false;
            }
            index++;
            }
        } else if (s[i] == '[') {
            while (idxToReach < s.size()) {
            if (s[index] == ']' && index == idxToReach) {
                break;
            }  else if (s[index] == '(' || s[index] == '{' || s[index] == '[') {
                idxToReach += 2;
            } else if (s[index] != ']' && index == idxToReach) {
                return false;
            }
            index++;
            }
        } else if (s[i] == '{') {
            while (idxToReach < s.size()) {
            if (s[index] == '}' && index == idxToReach) {
                break;
            }  else if (s[index] == '(' || s[index] == '{' || s[index] == '[') {
                idxToReach += 2;
            } else if (s[index] != '}' && index == idxToReach) {
                return false;
            }
            index++;
            }
        } 
        if (idxToReach >= s.size()) {
            return false;
        }
    }
    return true;
}

};

[nitins-04]

If I include the condition that s.size() % 2 == 1, it would be a valid solution, but even without it I was given an accepted solution.