参考:http://blog.csdn.net/zhangxin09/article/details/6885175 The Grid Panel is one of the centerpieces of Ext JS. It's an incredibly versatile component that provides an easy way to display, sort, group, and edit data. Grid 面板为 Ext JS 的大头核心之一.它是一个通用性很强…

Grids Time Limit: 10000/5000 MS (Java/Others)    Memory Limit: 65535/65535 K (Java/Others) Problem Description 度度熊最近很喜欢玩游戏.这一天他在纸上画了一个2行N列的长方形格子.他想把1到2N这些数依次放进去,但是为了使格子看起来优美,他想找到使每行每列都递增的方案.不过画了很久,他发现方案数实在是太多了.度度熊想知道,有多少种放数字的方法能满足上面的条件?   Input 第一行为数…

题目链接:hdu 4828 Grids 题目大意:略. 解题思路:将上一行看成是入栈,下一行看成是出栈,那么执着的方案就是卡特兰数,用递推的方式求解. #include <cstdio> #include <cstring> typedef long long ll; const int N = 1000005; const ll MOD = 1e9+7; ll dp[N]; ll extendGcd(ll a, ll b, ll& x, ll& y) { if (…

A Multipart Series on Grids in ASP.NET MVC Displaying a grid of data is one of the most common tasks faced by web developers. This article series shows how to display grids of data in an ASP.NET MVC application and walks through a myriad of common gr…

Grids Time Limit: 10000/5000 MS (Java/Others)    Memory Limit: 65535/65535 K (Java/Others)Total Submission(s): 562    Accepted Submission(s): 223 Problem Description 度度熊最近很喜欢玩游戏.这一天他在纸上画了一个2行N列的长方形格子.他想把1到2N这些数依次放进去,但是为了使格子看起来优美,他想找到使每行每列都递增的方案.不过画了很…

This is the third post about LifeCycle Grids. You can find the first post about the sense of LifeCycle Grids and A-Z process for creating and visualizing with R programming language here. Lastly, here is the second post about adding monetary metrics…

We studied a very powerful approach for customer segmentation in the previous post, which is based on the customer’s lifecycle. We used two metrics: frequency and recency. It is also possible and very helpful to add monetary value to our segmentation…

I want to share a very powerful approach for customer segmentation in this post. It is based on customer’s lifecycle, specifically on frequency and recency of purchases. The idea of using these metrics comes from the RFM analysis. Recency and frequen…

在路径规划.游戏设计栅格法应用中,正六边形网格不如矩形网格直接和常见,但是正六边形具有自身的应用特点,更适用于一些特殊场景中,比如旷阔的海洋.区域或者太空.本文主要讲述如何对正六边形进行几何学分析.网格化环境建模.坐标系转换以及正六边形间的关系求解等.六边形的具体代码实现可以参见github: https://github.com/wylloong/HexagonalGrids . 几何学分析:正六边形的边长相等,内角都是120度,其它性质可以参见百度百科.在正六边形网格化布局设计中,典型的正六…

1065: Operations on Grids Time Limit: 3 Sec  Memory Limit: 128 MB Submit: 17  Solved: 4 [Submit][Status][Web Board] Description 你有一个  9  位数字串,现在你把这个数字的每一位填到  3 × 3  格子上.如果数 字是  123456789,那么填到  3 × 3  格子上会得到:  123 456 789 现在你可以对这  3 × 3  格子做四种操作: 现在给你…