生成多重括号,使用回溯法试探所有组合 javascript function generateParenthesis(n) { // Write your code here var res = [], condidate = [] function backtrack(n, left, right ...
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其他好文 时间:
2019-12-15 11:01:21
阅读次数:
100
传送门:https://leetcode.com/problems/longest-valid-parentheses/ 题意:给出一个由括号'('与')'组成的字符串,找出最长合法连续子串的长度 思路:首先需要注意的是,子串要是连续的,然后按顺序一个'('匹配一个')',比如"()()()","( ...
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其他好文 时间:
2019-11-30 23:59:23
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127
Implement a basic calculator to evaluate a simple expression string. The expression string may contain open ( and closing parentheses ), the plus + or ...
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其他好文 时间:
2019-11-10 09:34:42
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95
题目如下: Given a string s of '(' , ')' and lowercase English characters. Your task is to remove the minimum number of parentheses ( '(' or ')', in any po ...
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其他好文 时间:
2019-11-04 11:50:25
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79
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: [ ...
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其他好文 时间:
2019-10-29 00:48:43
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132
Given a string containing just the characters '(' and ')', find the length of the longest valid (well-formed) parentheses substring. Example 1: Exampl ...
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其他好文 时间:
2019-10-23 00:33:50
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102
Difficulty:easy More:【目录】LeetCode Java实现 Description https://leetcode.com/problems/valid-parentheses/ Given a string containing just the characters '( ...
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其他好文 时间:
2019-10-04 23:20:46
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186
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: ...
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其他好文 时间:
2019-09-22 12:49:54
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71
Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. An input string is valid if: No ...
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其他好文 时间:
2019-09-20 00:04:55
阅读次数:
79