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...
分类：
其他好文 时间：
2014-07-31 16:08:26
阅读次数：
283
THE DRUNK JAILERTime Limit: 1000MSMemory Limit: 10000KTotal Submissions: 23358Accepted: 14720DescriptionA certain prison contains a long hall of n cel...
分类：
其他好文 时间：
2014-07-31 12:31:16
阅读次数：
210
Aeroplane chess
Problem Description
Hzz loves aeroplane chess very much. The chess map contains N+1 grids labeled from 0 to N. Hzz starts at grid 0. For each step he throws a dice(a dice hav...
分类：
其他好文 时间：
2014-07-31 09:49:57
阅读次数：
208
/*A + B Problem II
Problem Description
I have a very simple problem for you. Given two integers A and B, your job is to calculate the Sum of A + B.
Input
The first line of the input contains an...
分类：
其他好文 时间：
2014-07-30 17:38:54
阅读次数：
306
Problem Description
Given a positive integer n, your task is to find a positive integer m, which is a multiple of n, and that m contains the least number of different digits when represented in decim...
分类：
其他好文 时间：
2014-07-30 14:46:03
阅读次数：
230
什么是JQuery的选择器呢，详见JQuery中的Selector: http://docs.jquery.com/Selectors比如 $("div:contains('John')").css("text-decoration", "underline");的contains选择器等等JQue...
分类：
Web程序 时间：
2014-07-30 14:42:53
阅读次数：
325
问题描述：
A linked list is given such that each node contains an additional random pointer which could point to any node in the list or null.
Return a deep copy of the list.
解题思路：
将1->2->3->4->NUL...
分类：
其他好文 时间：
2014-07-30 10:07:54
阅读次数：
259
题目：
Product
The Problem
The problem is to multiply two integers X, Y. (0250)
The Input
The input will consist of a set of pairs of lines. Each line in pair contains one mu...
分类：
其他好文 时间：
2014-07-29 18:03:42
阅读次数：
283
WebSocket是JavaEE7新支持的：The javax.websocket.server package contains annotations, classes, and interfaces to create and configure server endpoints.Javax....
分类：
Web程序 时间：
2014-07-29 17:16:52
阅读次数：
337
Description
Given a positive integer N, you should output the most right digit of N^N.
Input
The input contains several test cases. The first line of the input is a single integer...
分类：
Web程序 时间：
2014-07-29 14:47:28
阅读次数：
270
