#include<iostream>#include<vector>#include<stack>#include<map>usingnamespacestd;boolisValid(strings) { map<char,char>smap; smap.insert(make_pair('(',')')); stack<char>ss;inti =0;intL =s.length();while(i<L) {charc =s[i];if(!ss.empty() && c ==smap[ss.top()]) { ss.pop(...
Givennpairs of parentheses, write a function to generate all combinations of well-formed parentheses. For example, givenn= 3, a solution set is: "((()))", "(()())", "(())()", "()(())", "()()()" 1publicclassSolution {2String parenthes = "()";3List<String> lastParenthe...
Leetcode: Generate Parentheses 题目: Given n pairs of parentheses, write a function to generate all combinations of well-formed parentheses. For example, given n = 3, a solution set is: “((()))”, “(()())”, “(())()”, “()(())”, “()()()” 思路分析: 最后的组合结果...
public List<String> generateParenthesis(int n) { this.c = new char[n * 2]; this.n = n * 2; dspGener(0); return strList; } List<String> strList = new ArrayList<String>(); char c[];//暂存中间结果 char kuohao[] = new char[] { '(', ')' }; int n = 0; void dspGener...
自己没想出来,全部参考 LeetCode 给出的Solution。 解法一 暴力破解 列举所有的情况,每一位有左括号和右括号两种情况,总共 2n 位,所以总共 种情况。 publicList<String>generateParenthesis(intn){List<String>combinations=newArrayList();generateAll(newchar[2*n],0,combinations);returncombinations;}publicvoidgene...
1. Description Generate Parentheses 2. Solution class Solution{public:vector<string>generateParenthesis(intn){vector<string>result;push(0,0,result,"",n,'(');returnresult;}private:voidpush(intleft,intright,vector<string>&result,string s,constintn,charch){s+=ch;if(ch=='('){left++;}else{...
【LeetCode从零单排】No22.Generate Parentheses 简介:题目Given n pairs of parentheses, write a function to generate all combinations of well-formed parentheses.For example, given n = 3, a solution set is:"((()))", "(()())", "(())()", "()(())", "()()...
题目:Generate Parentheses 生成括号 难度:中等 Given n pairs of parentheses, write a function to generate all combinations of well-formed parentheses. For example, given n = 3, a solution set ...22. Generate Parentheses 题目链接 https://leetcode.com/problems/generate-parentheses/ 解题思路 一道...
题目:http://oj.leetcode.com/problems/generate-parentheses/ Given n pairs of parentheses, write a function to generate all combinations of well-formed parentheses. For example, given n = 3, a solution ...
leetcode leetcode 695 Max Area of Island 岛屿的最大面积 https://leetcode.com/problems/max-area-of-island/ https://leetcode-cn.com/problems/max-area-of-island/ 给定一个包含了一些 0 和 1的非空二维数组 grid , 一个 岛屿 是由四个方向 (水平或垂直) 的 1 (代......