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Squares
Magic
Squares
In Grid Python题解
A3x3magicsquareisa3x3gridfilledwithdistinctnumbersfrom1to9suchthateachrow,column,andbothdiagonalsallhavethesamesum.Givenangridofintegers,howmany3x3"magicsquare"subgridsarethere?(Eachsubgridiscontiguou
Chip_Wan
·
2018-08-01 19:23
Magic
Squares
In Grid Python题解
A3x3magicsquareisa3x3gridfilledwithdistinctnumbersfrom1to9suchthateachrow,column,andbothdiagonalsallhavethesamesum.Givenangridofintegers,howmany3x3"magicsquare"subgridsarethere?(Eachsubgridiscontiguou
Chip_Wan
·
2018-08-01 19:23
核自适应滤波
传统的自适应滤波器,如归一化最小均方(Normalizedleastmeansquare,NLMS)滤波器、仿射投影(Affineprojection,AP)滤波器和递归最小二乘(recursiveleast-
squares
倾世妃
·
2018-07-26 16:28
信号处理
Python基本绘图案例
折线图二、柱状图三、饼图bar四、直方图一、折线图#绘制折线图importmatplotlib.pyplotasplt#绘制X轴对应的点x_values=[1,2,3,4,5]#每一个X点,对应的Y值
squares
Analyst128
·
2018-07-22 23:53
Python语言
数据分析
数据可视化
Perfect
Squares
第一种做法是动态规划,用一个数组perfect[i]来记录到perfect[i]数目,perfect[0]=0,对于i来说,任意一个i-jj+jj=i,所以prefect[i]=min(perfect[i],perfect[i-j*j]+1),把所有perfect[i]初始化为n。代码如下:importmathclassSolution(object):defnumSquares(self,n):
April63
·
2018-06-26 16:12
POJ - 2002:
Squares
Squares
来源:POJ标签:参考资料:相似题目:题目Asquareisa4-sidedpolygonwhosesideshaveequallengthandadjacentsidesform90-degreeangles.Itisalsoapolygonsuchthatrotatingaboutitscentreby90degreesgivesthesamepolygon.Itisnotthe
wingrez
·
2018-06-01 00:44
【记录】算法题解
matplotlib调用出错
代码如下:importmatplotlib.pyplotaspltsquares=[1,4,9,16,25]plt.plot(
squares
)plt.show()运行结果:D:\anaconda\python.exe"E
python_caiji
·
2018-05-26 08:30
ES6基础之const声明
问题今天在分析React教程时,观察到如下代码:classBoardextendsReact.Component{constructor(props){super(props);this.state={
squares
googlingman
·
2018-05-20 16:27
es6
const
Node/React
PCL点云上采样: Moving Least
Squares
背景:pcl官方教程:点击打开链接运行版本:pcl1.8.11.使用感受:这一官方的教程是一个垃圾。对,就是这么直白。你跑一下代码,你就会首先遇到这个编译错误:/home/UpSample/src/main.cpp:122:warning:‘voidpcl::MovingLeastSquares::setPolynomialFit(bool)[withPointInT=pcl::PointXYZ;
有梦想的田园犬
·
2018-05-19 16:25
PCL
点云采样
用python 生成的简单的图形图表
importmatplotlib.pyplotasplt#x轴的值input_values=[1,2,3,4,5]#y轴的值
squares
=[1,4,9,16,25]#执行生成图表的方法plt.plot
丁典
·
2018-04-18 15:19
IT
golang中channel的用法
funcmain(){natures:=make(chanint)
squares
:=make(chanint)gofunc(){forx:=0;x<100;x++{natures<-x}close(natures
dreams512
·
2018-04-01 14:33
go
JS几种数组遍历方式总结
forof,map等等一些方法,以下介绍几种本文分析用到的数组遍历方式以及进行性能分析对比第一种:普通for循环代码如下:for(j=0;jtruereturnval*val})console.log(
Squares
function__
·
2018-03-14 15:41
JS
利用 python 进行线性回归
理解什么是线性回归线性回归也被称为最小二乘法回归(LinearRegression,alsocalledOrdinaryLeast-
Squares
(OLS)Regression)。
ls13552912394
·
2018-02-28 11:14
python
Perfect
Squares
题目要求Givenapositiveintegern,findtheleastnumberofperfectsquarenumbers(forexample,1,4,9,16,...)whichsumton.Forexample,givenn=12,return3because12=4+4+4;givenn=13,return2because13=4+9.判断一个数字最少由几个平方数的和构成。比如
raledong
·
2018-02-24 00:00
math
dp
java
leetcode
Leetcode-279_Perfect
Squares
(完美广场)-动态规划、数学、广度优先遍历-【C++】
Leetcode-279PerfectSquares(完美广场)Givenapositiveintegern,findtheleastnumberofperfectsquarenumbers(forexample,1,4,9,16,…)whichsumton.Forexample,givenn=12,return3because12=4+4+4;givenn=13,return2because13
广海_小疯疯丶
·
2018-02-09 11:44
【Leetcode题解】
算法学习及Leetcode题解
Perfect
Squares
(水题)
PerfectSquaresGivenanarraya1, a2, ..., anofnintegers,findthelargestnumberinthearraythatisnotaperfectsquare.Anumberxissaidtobeaperfectsquareifthereexistsanintegerysuchthatx = y2.InputThefirstlinecontai
一只二十四节气
·
2018-01-26 10:46
思维技巧
编写高效且优雅的 PYTHON 代码
例如,nums=[1,2,3]
squares
=map(lambdax:x**2,nums)#使用mapsquares=[x**2forxintest_num]#使用列表推导式并且,在列表推导式中能加入很多判断
Alvin_Lam
·
2018-01-10 00:35
Python
forEach、$.each和map的区别
[1,2,3,4].forEach(alert);//等同于下面这个for循环vararr=[1,2,3,4];for(vari=0;itruereturnval*val;})console.log(
Squares
啊啊啊阿南
·
2018-01-03 10:53
POJ 1753 Flip Game (枚举或高斯消元)
48244Accepted:20555DescriptionFlipgameisplayedonarectangular4x4fieldwithtwo-sidedpiecesplacedoneachofits16
squares
.Onesideofeachpieceiswhitean
ZJUCSqxy
·
2017-12-16 17:14
基本算法
在python中,用plot绘制折线图
python中,用plot绘制折线图#coding=utf-8importmatplotlib.pyplotasplt#绘制X轴对应的点x_values=[1,2,3,4,5]#每一个X点,对应的Y值
squares
木里先森
·
2017-12-12 09:41
python
2013-BMC Bioinformatics-Finding reproducible cluster partitions for the k-means algorithm
K-meansclusteringiswidelyusedforexploratorydataanalysis.Whileitsdependenceoninitialisationiswellknown,itiscommonpracticetoassumethatthepartitionwithlowestsum-of-
squares
英天
·
2017-12-10 02:15
Matplotlib plot( ) 绘制简单折线图
Matplotlibplot绘制简单折线图1.example1importmatplotlib.pyplotaspltsquares=[1,4,9,16,25]plt.plot(
squares
)plt.show
ForeverStrong
·
2017-11-22 20:37
Matplotlib
使用matplotlib绘制简单的折线图
www.shihao.online/(django搭建的个人博客,还在完善中)#encoding:utf-8#使用matplotlib绘制简单的折线图importmatplotlib.pyplotasplt#绘制简单的折线图
squares
史浩的专栏
·
2017-11-19 17:06
python
python学习与开发
Perfect
Squares
——动态规划
问题描述Givenapositiveintegern,findtheleastnumberofperfectsquarenumbers(forexample,1,4,9,16,...)whichsumton.Forexample,givenn=12,return3because12=4+4+4;givenn=13,return2because13=4+9.算法分析考虑Sum=a+b+c+d,a,b
Mind_V
·
2017-10-18 10:28
动态规划
python数据可视化——利用pyplot绘制折线图和散点图
1、绘制简单折线#a.pyimportmatplotlib.pyplotaspltsquares=[1,4,9,16,25]plt.plot(
squares
)plt.show()#函数plot()尝试根据数字绘制出有意义的图形
仲夏199603
·
2017-10-10 09:07
python
POJ1753:Flip Game(BFS、枚举、位运算)
1000MSMemoryLimit:65536KDescriptionFlipgameisplayedonarectangular4x4fieldwithtwo-sidedpiecesplacedoneachofits16
squares
.Onesideofeachpieceiswhiteandtheotheroneisblackandeachpieceislyingeither
Hrbust_cx
·
2017-10-02 23:30
ACM算法
Perfect
Squares
类似背包问题 + 很简单的动态规划DP解决
Givenapositiveintegern,findtheleastnumberofperfectsquarenumbers(forexample,1,4,9,16,…)whichsumton.Forexample,givenn=12,return3because12=4+4+4;givenn=13,return2because13=4+9.动态规划用dp[i]数组存储第i个数的完美平方数。递推
JackZhangNJU
·
2017-09-27 22:13
leetcode
For
Java
需要好好想一下的题目
DP动态规划
leetcode
For
C++
[agc013e]Placing
Squares
前言这题啃了好久啊。一开始就知道要解决子问题,但没想到是模型转换,只是对着式子乱搞,推了好久(中途推出了一个隔项斐波那契数列)然而最后证实我式子推错了(菜醒.jpg)于是膜拜了题解的模型转换。题意给你一个大小为m的集合S,S中不包含n。现在对于一个正整数序列a1−ak,如果不存在si属于集合S就是合法的,s表示a的前缀和。这样的序列贡献是Πki=1a2i,求所有合法序列的贡献和。模型转换我们不妨进
WerKeyTom_FTD
·
2017-09-26 17:02
排列组合
矩阵乘法
一般动规与递推
Perfect
Squares
(完全平方数)
Givenapositiveintegern,findtheleastnumberofperfectsquarenumbers(forexample,1,4,9,16,…)whichsumton.Forexample,givenn=12,return3because12=4+4+4;givenn=13,return2because13=4+9.Credits:Specialthanksto@jia
NickChen_0411
·
2017-09-12 11:28
LeetCode
Perfect
Squares
leetcode-279.PerfectSquares问题描述如下:Givenapositiveintegern,findtheleastnumberofperfectsquarenumbers(forexample,1,4,9,16,…)whichsumton.Forexample,givenn=12,return3because12=4+4+4;givenn=13,return2because
写代码的柯长
·
2017-08-24 20:51
all
accept弱鸡刷刷题
POJ1753 Flip Game 位运算+搜索
46458Accepted:19890DescriptionFlipgameisplayedonarectangular4x4fieldwithtwo-sidedpiecesplacedoneachofits16
squares
.Onesideofeachpieceiswhitean
DlPF_C
·
2017-08-23 15:12
简单算法
dlib 矩阵操作
sudoapt-getinstalllibdlib-devsudoapt-getinstalllibblas-devdlib默认安装路径:/usr/include/dlib/optimization/optimization_least_
squares
.hhttp
AndyCheng_hgcc
·
2017-08-07 19:52
dlib
simple line chart , scatter diagram and RandomWalk
1,simplelinechartimportmatplotlib.pyplotaspltinputvalues=[1,2,3,4,5]
squares
=[1,4,9,16,25]#correctthevalueplt.plot
Davenny
·
2017-08-05 11:38
matplotlib数据可视化
Perfect
Squares
费马小定理求乘法逆元k=b^(p-2)
ProblemDescriptionAnumberxiscalledaperfectsquareifthereexistsanintegerbsatisfyingx=b^2.Therearemanybeautifultheoremsaboutperfectsquaresinmathematics.Amongwhich,PythagorasTheoremisthemostfamous.Itsayst
Big_Rui
·
2017-07-24 15:51
数论
Perfect
Squares
Givenapositiveintegern,findtheleastnumberofperfectsquarenumbers(forexample,1,4,9,16,...)whichsumton.Forexample,givenn=12,return3because12=4+4+4;givenn=13,return2because13=4+9.Credits:Specialthanksto@j
迷上微笑
·
2017-07-13 20:54
leetcode
最小二乘解(Least-
squares
Minimization )
对于线性方程组,解的判别条件如下:1.Ax=0总有解,至少有零解2.Am×nx=0当r(A)=n,只有零解当r(A)n,方程数大于未知数。方程一般没有解,除非b属于A的列向量组成的子空间。我们考虑m≥n并且r(A)=n的情况。如果解不存在,我们找一个最接近Am×nx=b的解矢量仍然有意义,这个方程成为超定方程(方程大于未知数)。也就是说,我们寻找一个向量x使得∥Ax−b∥最小,这里的∥∙∥表示矢量
kokerf
·
2017-05-17 20:12
算法
Python 回归 普通最小二乘法(Ordinary Least
Squares
)
广义线性回归模型:把作为系数向量(coef_);把作为截距(intercept_)1.普通最小二乘法(OrdinaryLeastSquares)线性回归的目的就是是的预测值与实际值的残差平方和最小:importmatplotlib.pyplotaspltimportnumpyasnp#载入数据集“datasets”fromsklearnimportdatasets,linear_model#获取糖
Claroja
·
2017-04-21 13:46
scikit
C语言基础部分
这里没有‘;’{printf("forhe'sajollygooffellow\n");}/*这里main是主函数,先执行main(),再执行自己定义的函数*/②有返回值#includedoublesum_
squares
坏鱼儿恋夏
·
2017-04-13 20:10
C语言知识点
Perfect
Squares
leetcode279.PerfectSquaresGivenapositiveintegern,findtheleastnumberofperfectsquarenumbers(forexample,1,4,9,16,...)whichsumton.Forexample,givenn=12,return3because12=4+4+4;givenn=13,return2because13=4+9
mejustdoit
·
2017-04-10 16:19
java
acm
leetcode
LC-279 Perfect
Squares
Givenapositiveintegern,findtheleastnumberofperfectsquarenumbers(forexample,1,4,9,16,...)whichsumton.Forexample,givenn=12,return3because12=4+4+4;givenn=13,return2because13=4+9.BFSpublicclassSolution{pu
Zihowe
·
2017-03-31 06:18
425 Word
Squares
题目描述请见leetcode425wallarealeadlady在给定的词典里,找到一些单词,组成一个square,第i行和第i列一样。(0,0)这个点找到满足条件的,我们选择w。(0,1)我们要满足wa,a都可以作为开头的部分。(0,2)我们要满足wal,l都可以作为开头的部分。按照代码的逻辑,走一遍testcase,填写好prefix[]每一步被更新的样子。第0行。开始prefix[root
大米中的大米
·
2017-02-23 00:00
java
trie
dfs
python列表(Lists)
>>>
squares
= [1, 4, 9, 16, 25]>>>
squares
[1, 4, 9, 16, 25](2)像字符串(和所有内建的序列类型)一样,列表可
枫叶还没红
·
2017-02-20 17:44
list
python
lists
python
Mulan's Know Ningbo: Plazas, business districts &
squares
. (Ⅲ)
1844Heyi-1844·和义Address:HaishuDistrict,100HeyiRoad1844HeyiislocatedintheheartofNingbo'sSanjiangkoudistrictandisclosetotheYiwuAvenueluxurycomplex.Itretainssomeoldandnewbuildingsandblendstogetherfashion
Mulan沐兰
·
2017-02-15 13:22
Mulan's Know Ningbo: Plazas, business districts &
squares
. (Ⅱ)
ShanjingOutletsPlaza-杉井奥特莱斯广场Ontheedgesofthemaincity,thisplazaisnottoofamiliartoeventhelocalNingbonese.Sellinggoodsanditemsatwholesaleprices,ifyou'relookingforabargainthenthisistheplacetoshop!Address:
Mulan沐兰
·
2017-02-08 13:39
Leetcode: Word
Squares
&& Summary: Another Important Implementation of Trie(Retrieve all the words with
Givenasetofwords(withoutduplicates),findallwordsquaresyoucanbuildfromthem. Asequenceofwordsformsavalidwordsquareifthekthrowandcolumnreadtheexactsamestring,where0≤kstartWith; 5publicTrieNode(){ 6this.
neverlandly
·
2016-12-20 01:00
Flip Game(POJ 1753)
DescriptionFlipgameisplayedonarectangular4x4fieldwithtwo-sidedpiecesplacedoneachofits16
squares
.Onesideofeachpieceiswhiteandtheotheroneisblackandeachpieceislyingeitherit
Emma1997
·
2016-12-01 08:24
acm水题
Perfect
Squares
今天广州天气有点冷,如下图:so,刷个题暖暖身吧!!看题:279.PerfectSquaresQuestionEditorialSolutionMySubmissionsTotalAccepted:56296TotalSubmissions:163333Difficulty:MediumContributors:AdminGivenapositiveintegern,findtheleastnum
caoyan_12727
·
2016-11-10 16:39
leetcode算法
poj_1753 Flip Game(dfs+枚举)/(bfs+位运算)
40897Accepted:17756DescriptionFlipgameisplayedonarectangular4x4fieldwithtwo-sidedpiecesplacedoneachofits16
squares
.Onesideofeachpieceiswhitean
christry_stool
·
2016-10-01 02:41
POJ2386经典DFS深搜
waterhaspooledinvariousplacesinFarmerJohn’sfield,whichisrepresentedbyarectangleofNxM(1<=N<=100;1<=M<=100)
squares
.Eachsquarecontainse
一北
·
2016-09-27 00:56
ACMer之路
________水题
________搜索
卡通图像变形算法(Moving Least
Squares
)附源码
本文介绍一种利用移动最小二乘法来实现图像变形的方法,该方法由用户指定图像中的控制点,并通过拖拽控制点来驱动图像变形。假设p为原图像中控制点的位置,q为拖拽后控制点的位置,我们利用移动最小二乘法来为原图像上的每个像素点v构建相应的仿射变换lv(x),并通过该变换来计算得到图像变形后的位置:其中权重wi的表达式为wi=1/|pi-v|2α。仿射变换lv(x)由两部分组成lv(x)=xM+T,其中M为线
算法小丑
·
2016-09-20 13:00
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