Longest Valid Parentheses
Explore how to identify the longest well-formed parentheses substring within a string using stack data structures. This lesson helps you understand how to verify valid nesting and pairing of parentheses and implement efficient solutions in code.
We'll cover the following...
We'll cover the following...
Statement
You are given a string composed entirely of ‘(’ and ‘)’ characters. Your goal is to identify the longest contiguous segment (substring) within this string that represents a “well-formed” or “valid” sequence of parentheses.
A substring is considered valid if:
Every opening parenthesis ‘
(’ has a corresponding closing parenthesis ‘)’.The pairs of parentheses are correctly nested.
Return the length of this longest valid ...