【Leetcode】Remove Invalid Parentheses 题目链接:https://leetcode.com/problems/remove-invalid-parentheses/ 题目: Remove the minimum number of invalid parentheses in order to make the input string valid. Return all possible results. Note: The input string may contain letters other than the parentheses...
leetcode-301-Remove Invalid Parentheses s.erase() will erase the char in s then return!!! If you want to get thes.erase and s, it should use another string to storesthen erase the char Do not know how to do: when an parenthese is valid will have: - If i not in the end, left...
Calculate the number of invalid parentheses of the original string. Iterate through the string. Remove each character and DFS if the number of invalid parentheses decreases. This solution is based on the fact that if we're on the right path to the optimal string, the number of invalid parenth...
Remove the minimum number of invalid parentheses in order to make the input string valid. Return all possible results. Note: The input string may contain letters other than the parentheses(and). Example 1: Input: "()())()" Output: ["()()()", "(())()"] Example 2: Input: "(a)...
class Solution { public: vector<string> removeInvalidParentheses(string s) { vector<string> res; int cnt1 = 0, cnt2 = 0; for (char c : s) { cnt1 += (c == '('); if (cnt1 == 0) cnt2 += (c == ')'); else cnt1 -= (c == ')'); } helper(s, 0, cnt1, cnt2...
# @File : RemoveInvalidParentheses.py """ 题号301 删除无效的括号 删除最小数量的无效括号,使得输入的字符串有效,返回所有可能的结果。 说明: 输入可能包含了除 ( 和 ) 以外的字符。 示例1: 输入: "()())()" 输出: ["()()()", "(())()"] ...
class Solution: def removeInvalidParentheses1(self, s: str): # 找字符串最长有效括号的长度 def longestVaildParentheses(s: str): res = 0 stack = [] for a in s: if a == "(": stack.append("(") elif a == ")": if stack: res += 2 stack.pop() return res def helper(s, left...
class Solution{public:vector<string>removeInvalidParentheses(string s){queue<pair<string,int>>q;q.push(make_pair(s,0));vector<string>result;while(!q.empty()){autop=q.front();q.pop();string ss=p.first;if(is_valid(ss))result.push_back(ss);elseif(result.empty())for(inti=p.second;...
301. Remove Invalid Parentheses 样例 Remove the minimum number of invalid parentheses in order to make the input string valid. Return all possible results. Note: The input string may contain letters other than the parentheses ( and ). Example 1: Input: "()())()" Output: ["()()()", ...
3.当没有多余的左右括号的时候,判断当前字符串是否合法 publicList<String>removeInvalidParentheses(String s){List<String>list=newArrayList<>();intleft=0,right=0;for(charch:s.toCharArray()){if(ch=='(')left++;elseif(left!=0&&ch==')')left--;elseif(left==0&&ch==')')right++;}dfs(s,0...