2014年5月2日
Validate Binary Search Tree
摘要： Given a binary tree, determine if it is a valid binary search tree (BST).Assume a BST is defined as follows:The left subtree of a node contains only n... 阅读全文
posted @ 2014-05-02 10:35 Awy 阅读(252) 评论(0) 推荐(0) 编辑
Reverse Linked List II
摘要： Reverse a linked list from positionmton. Do it in-place and in one-pass.For example:Given1->2->3->4->5->NULL,m= 2 andn= 4,return1->4->3->2->5->NULL.No... 阅读全文
posted @ 2014-05-02 00:23 Awy 阅读(312) 评论(0) 推荐(0) 编辑