Web Reference: Sep 17, 2025 · For a closing bracket, we check if it matches the character at top. If it does, we simply decrement top; otherwise, the string is unbalanced. In the end, if top is -1, all brackets are matched and the string is balanced. Note: Strings are immutable in Java, Python, C#, and JavaScript. May 21, 2018 · I understand using a stack is a better solution but my solution will work on nested parentheses since it checks for the most nested pair and removes it and continues this process until the input is an empty string. In this post, we'll tackle the "Valid Parentheses" problem, a common challenge in string processing and stack usage. The problem involves determining if a string of parentheses, braces, and brackets is valid, based on the order and type of each bracket.
YouTube Excerpt: Actual problem on LeetCode: https://leetcode.com/problems/
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Valid Parentheses Check Parentheses Java Net Worth 2026: Salary, Income & Wealth Net Worth & Biography
Estimated Worth: $43M - $80M
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Last Updated: April 6, 2026
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