https://leetcode.com/problems/reverse-substrings-between-each-pair-of-parentheses/discuss/383670/JavaC%2B%2BPython-Tenet-O(N)-Solution#:~:text=Solution%202%3A%20Wormholes 2232. Minimize Result by Adding Parentheses to Expression Medium You are given a 0-indexed string expression of the form "...
Given a string containing only three types of characters: '(', ')' and '*', write a function to check whether this string is valid. We define the validity of a string by these rules: Any left parenthesis'('must have a corresponding right parenthesis')'. Any right parenthesis')'must h...
https://leetcode.com/problems/valid-parenthesis-string/description/ 这个题的难点在增加了*,*可能是(也可能是)。是(的前提是:右边有多余的)。是)的前提是:左边有多余的(。所以他们的位置信息是重要的。 classSolution {public:boolcheckValidString(strings) {//*可以是(或者), 用openMax/Min来表示最多和...