2020年12月24日
[LeetCode] 1358. Number of Substrings Containing All Three Characters
摘要： Given a string s consisting only of characters a, b and c. Return the number of substrings containing at least one occurrence of all these characters 阅读全文
posted @ 2020-12-24 03:40 CNoodle 阅读(394) 评论(2) 推荐(0)
[LeetCode] 1021. Remove Outermost Parentheses
摘要： A valid parentheses string is either empty "", "(" + A + ")", or A + B, where A and B are valid parentheses strings, and + represents string concatena 阅读全文
posted @ 2020-12-24 00:55 CNoodle 阅读(125) 评论(0) 推荐(0)