2020年8月21日
921. Minimum Add to Make Parentheses Valid
摘要： Given a string S of '(' and ')' parentheses, we add the minimum number of parentheses ( '(' or ')', and in any positions ) so that the resulting paren 阅读全文
posted @ 2020-08-21 04:27 Schwifty 阅读(106) 评论(0) 推荐(0)
946. Validate Stack Sequences
摘要： Given two sequences pushed and popped with distinct values, return true if and only if this could have been the result of a sequence of push and pop o 阅读全文
posted @ 2020-08-21 03:53 Schwifty 阅读(104) 评论(0) 推荐(0)