按照某列的值拆分data.frameMy data is like this (for example):ID Rate State1 24 AL2 35 MN3 46 FL4 34 AL5 78 MN6 99 FLI want to split the ...
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其他好文 时间：
2015-04-28 20:17:43
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219
Ugly Numbers
Time Limit: 3000MS
Memory Limit: Unknown
64bit IO Format: %lld & %llu
Submit Status
Description
Ugly numbers are numbers whose only prime factors are 2...
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其他好文 时间：
2015-04-12 09:11:38
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131
DescriptionA number whose only prime factors are 2,3,5 or 7 is called a humble number. The sequence 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18,...
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其他好文 时间：
2015-04-06 16:58:47
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146
Ugly NumbersTime Limit:1000MSMemory Limit:10000KTotal Submissions:21453Accepted:9586DescriptionUgly numbers are numbers whose only prime factors are 2...
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其他好文 时间：
2015-04-05 17:19:57
阅读次数：
114
Problem Description
A number whose only prime factors are 2,3,5 or 7 is called a humble number. The sequence 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 25, 27, ... shows the first 20 humble numbers.
Now given a humble number, please w...
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其他好文 时间：
2015-03-12 17:17:24
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128
Design an algorithm to find the kth number such that the only prime factors are 3, 5, and 7.The eligible numbers are like 3, 5, 7, 9, 15 ...ExampleIf ...
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其他好文 时间：
2015-03-09 07:01:19
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183
#include#include#include#includeusing namespace std;const int MAX=100010; //int型素数一定在这个范围内int PrimeArr[MAX]; //素数表int cnt=0; //...
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其他好文 时间：
2015-03-05 01:39:52
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154
Ugly Numbers
Time Limit: 1000MS
Memory Limit: 10000K
Total Submissions: 21315
Accepted: 9520
Description
Ugly numbers are numbers whose only prime factors are 2, 3 or...
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其他好文 时间：
2015-03-04 22:50:29
阅读次数：
166
一、什么是factors？类似于function，将一个自变量空间投影到新空间。这个自变量空间叫做scope。二、例子如概率论中的联合分布，就是将不同变量值的组合映射到一个概率，概率和为1.三、几种操作（factor operation）的介绍1、乘积2、边缘化3、缩减四、总结（为何引入factor...
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其他好文 时间：
2015-03-03 21:54:44
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129
Given any positive integer N, you are supposed to find all of its prime factors, and write them in the format N = p1^k1* p2^k2*…*pm^km.Input Specifica...
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其他好文 时间：
2015-02-27 16:57:44
阅读次数：
165
