2021年12月15日
921. Minimum Add to Make Parentheses Valid
摘要： A parentheses string is valid if and only if: It is the empty string, It can be written as AB (A concatenated with B), where A and B are valid strings 阅读全文
posted @ 2021-12-15 15:03 啤酒加点醋 阅读(25) 评论(0) 推荐(0)