摘要: https://leetcode-cn.com/problems/remove-outermost-parentheses/ 有效括号字符串为空 ("")、"(" + A + ")" 或 A + B,其中 A 和 B 都是有效的括号字符串,+ 代表字符串的连接。例如,"","()","(())()" 阅读全文
posted @ 2019-10-29 23:00 xyy999 阅读(135) 评论(0) 推荐(0)