摘要: Given a string s containing only three types of characters: '(', ')' and '*', return true if s is valid. The following rules define a valid string: An 阅读全文
posted @ 2020-04-01 13:39 CNoodle 阅读(268) 评论(0) 推荐(0)
摘要: You have a long flowerbed in which some of the plots are planted, and some are not. However, flowers cannot be planted in adjacent plots. Given an int 阅读全文
posted @ 2020-04-01 05:25 CNoodle 阅读(173) 评论(0) 推荐(0)
摘要: A string is a valid parentheses string (denoted VPS) if and only if it consists of "(" and ")" characters only, and: It is the empty string, or It can 阅读全文
posted @ 2020-04-01 02:34 CNoodle 阅读(389) 评论(0) 推荐(0)
摘要: Given an m x n matrix board where each cell is a battleship 'X' or empty '.', return the number of the battleships on board. Battleships can only be p 阅读全文
posted @ 2020-04-01 01:32 CNoodle 阅读(177) 评论(0) 推荐(0)