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Lingo 优化实例 出版社问题
model: data: LY_K=0.002; enddata sets: !1-72个科目每个科目的书号数; number/1..72/:anum; link(number); !每个书号的平均价格; price/1..72/:p; !单位书号的销售量 预测2006年的; perSH/1..72...
分类:其他好文   时间:2014-08-28 11:14:59    阅读次数:302
iBatis多表查询
select typeid,typename from producttype where typeid=#typeid# select proid,proname,prodesc,price,img,protime,size,typeid from product...
分类:其他好文   时间:2014-08-27 22:03:28    阅读次数:283
HDU 3255 Farming(线段树求体积并)
你家种一年地的收成暴int!你当是《日人民报》啊! 题意: 雇佣贫农种地(所以是地主喽),每个农民带一种种子,播种在他管理矩形区域,每个单位面积种一粒,区域可能会重合,那么收成高的那粒会将其他的覆盖掉,求最终收成。 分析: 一开始想的是二维线段树set,但是看到面积有sqr(10^6),即使离散化也有sqr(3*10^4),后来想到加权的线段树扫描线求面积并,但是发现覆盖种子不好维护,后来看到别人题解标题:线段树求体积并。 把价格看成高度,那么每粒种子的高度区间就可以看成[0,price),想像一下,这些"...
分类:其他好文   时间:2014-08-27 16:36:28    阅读次数:203
[leecode]Best Time to Buy and Sell Stock III
Best Time to Buy and Sell Stock IIISay you have an array for which theithelement is the price of a given stock on dayi.Design an algorithm to find the...
分类:其他好文   时间:2014-08-26 19:13:26    阅读次数:268
LeetCode: Best Time to Buy and Sell Stock
LeetCode: Best Time to Buy and Sell StockSay you have an array for which the ith element is the price of a given stock on day i.If you were only permi...
分类:其他好文   时间:2014-08-25 22:35:34    阅读次数:261
IOS开发之----四舍五入问题
方法一:-(NSString *)notRounding:(float)price afterPoint:(int)position{NSDecimalNumberHandler* roundingBehavior = [NSDecimalNumberHandler decimalNumberHan...
分类:移动开发   时间:2014-08-25 18:44:24    阅读次数:156
Best Time to Buy and Sell Stock系列
Best Time to Buy and Sell StockSay you have an array for which theithelement is the price of a given stock on dayi.If you were only permitted to compl...
分类:其他好文   时间:2014-08-25 16:52:04    阅读次数:238
UVA - 12123 Magnetic Train Tracks
Description   The rail roads of Japan are being redesigned. So the governent is planning to install ultra-modern Magnetic trains instead of the current normal trains. As fuel price have gone hi...
分类:Web程序   时间:2014-08-22 12:57:18    阅读次数:401
newtonsoft.json 序列化,反序列化
public class Book { public string BookID { get; set; } public DateTime PublishDate { get; set; } public decimal Price { ...
分类:Web程序   时间:2014-08-21 09:38:14    阅读次数:265
NData BUG 记录
一、collection 如果设计如下页面 页面模型如下 public class Product:EZData.Context{ #region Property Name #endregion #region Property Price #endregion //按钮绑定 p...
分类:其他好文   时间:2014-08-20 19:16:12    阅读次数:184
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