2013年10月24日
leetcode:Valid Parentheses(有效括号匹配)
摘要： Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. The brackets must close in the correct order, "()" and "()[]{}" are all valid but "(]" and "([)]" are not. 阅读全文
posted @ 2013-10-24 16:57 般若一号 阅读(280) 评论(0) 推荐(0)
leetcode：Remove Nth Node From End of List （移除从尾部数的第N个节点）
摘要： Given a linked list, remove the nth node from the end of list and return its head. 阅读全文
posted @ 2013-10-24 12:45 般若一号 阅读(226) 评论(0) 推荐(0)
leetcode：Letter Combinations of a Phone Number（手机号码的字母组合）
摘要： Given a digit string, return all possible letter combinations that the number could represent. 阅读全文
posted @ 2013-10-24 01:40 般若一号 阅读(385) 评论(0) 推荐(0)