Package g0001_0100.s0032_longest_valid_parentheses

Class Solution

java.lang.Object
g0001_0100.s0032_longest_valid_parentheses.Solution
public class Solution extends java.lang.Object
32 - Longest Valid Parentheses.

Hard

Given a string containing just the characters '(' and ')', find the length of the longest valid (well-formed) parentheses substring.

Example 1:

Input: s = “(()”

Output: 2

Explanation: The longest valid parentheses substring is “()”.

Example 2:

Input: s = “)()())”

Output: 4

Explanation: The longest valid parentheses substring is “()()”.

Example 3:

Input: s = ""

Output: 0

Constraints:

  • 0 <= s.length <= 3 * 104
  • s[i] is '(', or ')'.

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    longestValidParentheses(java.lang.String s)
     

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • Solution

      public Solution()

  • Method Details

    • longestValidParentheses

      public int longestValidParentheses(java.lang.String s)