1:float保存2位小数:
f1.ToString("F2")2:datatable列求和:dt.Compute("sum([企业数量])",
"true")同时:如果字段为中文,取值用[中文字段] 方式。3:NPOI 导出EXCEL(需要手动导入NPOI文件)单Sheet: 1 //单Shee....
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其他好文 时间:
2014-05-26 15:38:04
阅读次数:
210
Given an array S of n integers, are there
elements a, b, c in S such that a + b + c = 0? Find all unique triplets in the
array which gives the sum of ...
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其他好文 时间:
2014-05-26 14:02:27
阅读次数:
263
Given a collection of candidate numbers (C) and
a target number (T), find all unique combinations inCwhere the candidate numbers
sums toT.Each number ...
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其他好文 时间:
2014-05-26 13:59:59
阅读次数:
237
Given an arraySofnintegers, are there
elementsa,b,c, anddinSsuch thata+b+c+d= target? Find all unique quadruplets in
the array which gives the sum of ...
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其他好文 时间:
2014-05-26 13:56:05
阅读次数:
269
这是一道很常见的题,看题的时候看漏了root to
leaf的leaf,以为只要从root开始就可以了,太不仔细了,sigh~ 其实类似的题目在Career
Cup的4.9,那个题是任意路径,不必从root到leaf,要求更高。一直以来我都有这样的疑问,迭代的变量(如下例中的path、total)如...
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其他好文 时间:
2014-05-26 12:09:21
阅读次数:
329
二次型$\bf计算1:$求实二次型$f(x_1,\cdots,x_n)=\sum\limits_{i=1}^n(x_i-\sum\limits_{j=1}^n\dfrac{x_j}{n})^2$的矩阵及正负惯性指数参考答案$\bf计算2:$
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其他好文 时间:
2014-05-26 10:25:45
阅读次数:
172
Hello every body, cheapnikeairtrainers.co.uk
are doing Spring Promotion! A hug number of Cheap Air Max trainers high quality
trainers with cheap price...
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其他好文 时间:
2014-05-26 10:19:28
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253
Given an array S of n integers, find three
integers in S such that the sum is closest to a given number, target. Return the
sum of the three integers....
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其他好文 时间:
2014-05-26 09:58:20
阅读次数:
220
最近在网上找了下mysql查询随机的几个sql,我把最终的记录下来。 SELECT *
FROM uchome_mtag AS a JOIN (SELECT MAX(tagid) AS id FROM uchome_mtag) AS b ON
(a.tagid>=FLOOR(b.id*RAND())...
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数据库 时间:
2014-05-26 08:51:19
阅读次数:
317
Time Limit: 2000/1000 MS (Java/Others) Memory
Limit: 65536/32768 K (Java/Others) Total Submission(s): 137169 Accepted
Submission(s): 31787 Problem Des...
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其他好文 时间:
2014-05-26 07:37:31
阅读次数:
314