Given a balanced parentheses string S , compute the score of the string based on the following rule: has score ABhas scoreA B, where A and B are balanced parentheses strings. A has score A, where A i ...
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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: "((()))", "(()())", "(())()", "()(())", "()()()" ...
= 3, a solution set is: 在 LeetCode 中有關括號的題共有七 ...
Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the i ...
題目描述 給出 n 代表生成括號的對數，請你寫出一個函數，使其能夠生成所有可能的並且有效的括號組合。 例如，給出 n =3，生成結果為： 解題思路 利用回溯的思想遞歸的生成括號。具體來說記錄當前剩余左括號數left，剩余右括號數right，當前 ...
1: Example 2: 這道求最長有效括號比之前那道 Valid Parentheses ...
A valid parentheses string is either empty (""), "(" + A + ")", or A + B, where A and B are valid parentheses strings, and + represents string ...
Remove the minimum number of invalid parentheses in order to make the input string valid. Return all possible results. Note: The input string may ...
You are given a string s that consists of lower case English letters and brackets. Reverse the strings in each pair of matching parentheses ...
