4.6. Defining FunctionsWe can create a function that writes the Fibonacci series to an arbitrary boundary:我们创建一个斐波那契数列的函数:>>> def fib(n): # write F...
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编程语言 时间:
2015-03-14 21:40:04
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586
英文题面:
De Prezer loves movies and series. He has watched the
Troy for like 100 times and also he is a big fan of
Supernatural series.So, he did some researches and found a cursed object which had
n...
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其他好文 时间:
2015-03-14 15:26:11
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163
目录目录
前言
题目
Native思路
二进制思路
AC前言最近在LeetCode上能一次AC的概率越来越低了,我这里也是把每次不能一次AC的题目记录下来,把解题思路分享给大家。题目All DNA is composed of a series of nucleotides abbreviated as A, C, G, and T, for example: “ACGAATTCCG”. When...
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其他好文 时间:
2015-03-14 12:30:04
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201
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 identify repeated sequences within the DNA.
Wri...
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其他好文 时间:
2015-03-13 12:48:59
阅读次数:
170
时间序列 time series分析。用R语言实现。
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其他好文 时间:
2015-03-11 12:28:46
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139
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...
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编程语言 时间:
2015-03-09 12:52:54
阅读次数:
228
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 ...
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其他好文 时间:
2015-03-07 22:29:54
阅读次数:
129
《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...
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Web程序 时间:
2015-03-07 11:25:46
阅读次数:
213
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...
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其他好文 时间:
2015-03-07 11:18:58
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114
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...
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其他好文 时间:
2015-03-06 15:58:03
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163