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数学之路-python数据处理(1)
Pandas基础import pandas aspdimport numpy as np#数字序列myseries=pd.Series([1,3,5,np.nan,6,8])print myseries#日期序列mydate=pd.date_range('20150101',periods=42)print mydate生成序列结果如下:0    11    32    53  NaN4    6...
分类:编程语言   时间:2015-03-09 12:52:54    阅读次数:228
[LeetCode] Repeated DNA Sequences
All DNA is composed of a series of nucleotides abbreviated as A, C, G, and T, for example: "ACGAATTCCG". When studying DNA, it is sometimes useful to ...
分类:其他好文   时间:2015-03-07 22:29:54    阅读次数:129
UVa 10253 (组合数 递推) Series-Parallel Networks
《训练之南》上的例题难度真心不小,勉强能看懂解析,其思路实在是意想不到。题目虽然说得千奇百怪,但最终还是要转化成我们熟悉的东西。经过书上的神分析,最终将所求变为:共n个叶子,每个非叶节点至少有两个子节点的 树的个数f(n)。最终输出2 × f(n)首先可以枚举一下根节点的子树的叶子个数,对于有i个叶...
分类:Web程序   时间:2015-03-07 11:25:46    阅读次数:213
SPOJ Problem 11063:AP - Complete The Series (Easy)
已知数列的第三项,最后第三项和数列的和,求这个数列sum=(a1+an)*n/2=(a3+a(n-3))/2,所以可以知道n.又(a(n-3)-a3)/(n-5)=d,那么就可以得到数列了。#include#includeint t,i;long long n,sum,a,b,d,fi;int ma...
分类:其他好文   时间:2015-03-07 11:18:58    阅读次数:114
1052. Linked List Sorting
A linked list consists of a series of structures, which are not necessarily adjacent in memory. We assume that each structure contains an integer key and a Next pointer to the next structure. Now give...
分类:其他好文   时间:2015-03-06 15:58:03    阅读次数:163
1054. The Dominant Color
Behind the scenes in the computer's memory, color is always talked about as a series of 24 bits of information for each pixel. In an image, the color with the largest proportional area is called the d...
分类:其他好文   时间:2015-03-06 15:53:34    阅读次数:137
POJ 3233-Matrix Power Series(矩阵快速幂+二分求矩阵和)
Matrix Power Series Time Limit:3000MS     Memory Limit:131072KB     64bit IO Format:%I64d & %I64u Submit Status Practice POJ 3233 Appoint description:  System Crawler  (2015-02-28) Desc...
分类:其他好文   时间:2015-03-05 14:48:24    阅读次数:154
【leetcode】Repeated DNA Sequences(middle)★
All DNA is composed of a series of nucleotides abbreviated as A, C, G, and T, for example: "ACGAATTCCG". When studying DNA, it is sometimes useful to ...
分类:其他好文   时间:2015-03-05 12:12:07    阅读次数:146
Centos ATI 显卡安装,“LCD 信号超出范围” 解决方法
centso ATI 显卡驱动安装centos 版本 32位 6.4 FinalATI 显卡版本:Radeon HD 7400 Series之前由于很久自己安装了centos显卡,分辨率很低不能调节,今天想彻底解决这一问题,查找一些资料终于解决。参考资料1:http://www.cnblogs.co...
分类:其他好文   时间:2015-03-04 18:29:27    阅读次数:159
自定义highchart tooltip
贴一段自定义highchart tooltip的代码实线了垮series的计算和顺序切换 formatter: function () { // var str = getTooltip(this); var str = '' + Highcharts.dateFormat(config_timelabelformats.day, this.x) + '...
分类:其他好文   时间:2015-03-04 14:39:46    阅读次数:184
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