Package g1201_1300.s1249_minimum_remove_to_make_valid_parentheses

Class Solution

java.lang.Object
g1201_1300.s1249_minimum_remove_to_make_valid_parentheses.Solution
public class Solution extends java.lang.Object
1249 - Minimum Remove to Make Valid Parentheses.

Medium

Given a string s of '(' , ')' and lowercase English characters.

Your task is to remove the minimum number of parentheses ( '(' or ')', in any positions ) so that the resulting parentheses string is valid and return any valid string.

Formally, a parentheses string is valid if and only if:

  • It is the empty string, contains only lowercase characters, or
  • It can be written as AB (A concatenated with B), where A and B are valid strings, or
  • It can be written as (A), where A is a valid string.

Example 1:

Input: s = “lee(t(c)o)de)”

Output: “lee(t(c)o)de”

Explanation: “lee(t(co)de)” , “lee(t(c)ode)” would also be accepted.

Example 2:

Input: s = “a)b(c)d”

Output: “ab(c)d”

Example 3:

Input: s = “))((”

Output: ""

Explanation: An empty string is also valid.

Constraints:

  • 1 <= s.length <= 105
  • s[i] is either'(' , ')', or lowercase English letter.

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    java.lang.String
    minRemoveToMakeValid(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

    • minRemoveToMakeValid

      public java.lang.String minRemoveToMakeValid(java.lang.String s)