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Hibernate 树状映射
示例: 类Org表示组织机构,是一个典型的树状结构数据,其属性包括: id,name,children,parent 要将Org映射到数据库中,对parent作多对一的映射,对children作一对多的映射。 我们可以通过三张表来解释其关系 代码实现: 1.建Org实体类@Entitypublic ...
分类:系统相关   时间:2014-08-12 00:23:23    阅读次数:468
uva live 6170
Esspe-PeaseeEsspe-Peasee is an ancient game played by children throughout the land of Acmania. The rules are simple:A player simply quibs the yorba at...
分类:其他好文   时间:2014-08-11 23:45:23    阅读次数:297
Given a tree, find the node with the minimum sum of distances to other nodes
O(n) complexity, have a traversal for the tree. Get the information of all children, then traverse the tree again.  #include #include #include #include using namespace std; class Node { pub...
分类:其他好文   时间:2014-08-10 13:00:30    阅读次数:238
JS-DOM:基础知识(一)
1.childNodes 属性可返回指定节点的子节点的节点列表(childNodes在firefox会选取空白节点) 我是文字1我是span 我是文字2 我是文字3 我是文字4 我是文字52.children //dom选取页面元素对象的子对象时,children 选取不包括空白节点 我是文字1我是...
分类:Web程序   时间:2014-08-06 14:35:01    阅读次数:381
jQuery:find()及children()的区别
1:children及find方法都用是用来获得element的子elements的,两者都不会返回 text node,就像大多数的jQuery方法一样。 2:children方法获得的仅仅是元素一下级的子元素,即:immediate children。 3:find方法获得所有下级元素,即:de...
分类:Web程序   时间:2014-08-06 14:08:01    阅读次数:252
[leetcode]Candy
CandyThere areNchildren standing in a line. Each child is assigned a rating value.You are giving candies to these children subjected to the following ...
分类:其他好文   时间:2014-08-05 02:55:38    阅读次数:179
POJ 2886 Who Gets the Most Candies? (线段树)
Description N children are sitting in a circle to play a game. The children are numbered from 1 to N in clockwise order. Each of them has a card with a non-zero integer on it in his/her hand. The ...
分类:其他好文   时间:2014-08-04 17:57:27    阅读次数:284
HDU 4001 To Miss Our Children Time (动态规划)
HDU 4001 To Miss Our Children Time (动态规划) 题目大意: 有n块砖头,每块砖头有长,宽,高和型号,问你最多建多高? 型号0的特点是:长度>=它下面砖头的长度 且 宽度>=它下面砖头的宽度 型号1的特点是:长度>=它下面砖头的长度 且 宽度>=它下面砖头的宽度 且 面积>=它下面砖头的面积 型号2的特点是:长度>它下面砖头的长度 且 宽度>它下面砖头的宽度 解题思路: 先排好序,排序方法贪心的方法,先按长后按宽从小到大排,如果长宽相等就按照型号从大到小排,如果再相等,...
分类:其他好文   时间:2014-08-03 23:18:16    阅读次数:373
POJ - 2886 Who Gets the Most Candies? (反素数+线段树)
Description N children are sitting in a circle to play a game. The children are numbered from 1 to N in clockwise order. Each of them has a card with a non-zero integer on it in his/her hand. Th...
分类:其他好文   时间:2014-08-02 15:37:33    阅读次数:259
hdu 1297 Children’s Queue
Children’s Queue Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 10540    Accepted Submission(s): 3390 Problem Description There ar...
分类:其他好文   时间:2014-08-01 19:51:15    阅读次数:264
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