2017年9月7日
蜗牛慢慢爬 LeetCode 20. Valid Parentheses [Difficulty: Easy]
摘要： 题目 Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. The brackets must close in t 阅读全文
posted @ 2017-09-07 20:59 cookielbsc 阅读(173) 评论(0) 推荐(0)
蜗牛慢慢爬 LeetCode 19. Remove Nth Node From End of List [Difficulty: Medium]
摘要： 题目 Given a linked list, remove the nth node from the end of list and return its head. For example, Note: Given n will always be valid. Try to do this 阅读全文
posted @ 2017-09-07 20:52 cookielbsc 阅读(113) 评论(0) 推荐(0)