2015年1月1日
LeetCode Longest Valid Parentheses
摘要： Given a string containing just the characters'('and')', find the length of the longest valid (well-formed) parentheses substring.For"(()", the longest... 阅读全文
posted @ 2015-01-01 20:43 birdhack 阅读(147) 评论(0) 推荐(0)
LeetCode Binary Search Tree Iterator
摘要： Implement an iterator over a binary search tree (BST). Your iterator will be initialized with the root node of a BST.Callingnext()will return the next... 阅读全文
posted @ 2015-01-01 01:48 birdhack 阅读(127) 评论(0) 推荐(0)