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指路👇👇👇👇👇👇👇http://c.biancheng.net/view/5477.html

C语言回文字母金字塔

mp;li);8for(i=1;i<=li;i++)9{10f='A';11for(j=26;j>=i;j--)12printf("");13for(k=0;k<liNum;k++)14{15printf("%c",f);16++f;17}18ff=f-1;19for(k=1;k<liNum;k++)20{21--ff;22printf("%c",ff);23}24if(liNum<li)25liNum++;2627printf("\n");28}29}😁😁😁😁😁😁😁😁😁😁😁😁😁😁😁😁😁😁😁😁😁😁😁😁😁😁😁�

TOC-Erik Dick - Fundametal of Turbomachinery

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特殊字符收集

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博客园表情符号使用

前言在使用博客园写文章时,除了文字的排版使用,还有就是表情的使用了。😘🤷‍♀️🤷‍♂️🤦‍♂️🤦‍♀️🤦‍♀️👀😊😂🤣❤😍👌😁👍🙌✌🤞😉😎🎶🎶😢💖😜👏💋🎉🌹🎂🤳🐱‍👤🐱‍🏍🐱‍💻🐱‍🐉🐱‍👓🐱‍🚀✔😃✨😆🤔🤢🎁😀😁😂🤣😄😃😅😆😉😊😋😎😍😘🥰😗😙😚☺🙂🤗🤩🤔🤨😐😑😶🙄😏😣😥😮🤐😯😪😫🥱😴😌😛😜😝🤤使用方法windows+.按住windows键加句号键即可弹出表情框。点击表情符号就行。不用区分各种排版句法。什么Markdown、Tinymce、Textbox。

【阿里云镜像】下载并安装Go环境

t;"formoreinformationaboutthattopic.C:\Users\xyb>输入goversion查看版本信息。C:\Users\xyb\Desktop\Go+\gop>goversiongoversiongo1.17.4windows/amd64C:\Users\xybdiy>goenvsetGO111MODULE=setGOARCH=amd64setGOBIN=setGOCACHE=C:\Users\xybdiy\AppData\Local\go-buildsetGOENV=C:\Users\xybdiy\AppData\Roaming\go\en

HUAWEI 数通RS

📕eNSP🛫华为HCIP认证👀

[转载] 我的猫猫图灵完备吗? 附xkcd漫画翻译一则

作者:ChloéLourseyre编辑:PeterFordham许可:CC-BY4.0原文:https://belaycpp.com/2021/11/24/is-my-cat-turing-complete/原标题:IsmycatTuring-complete?IsmycatTuring-complete?NOVEMBER24,2021CHLOÉ`SENUA`LOURSEYREThisarticleisanadaptationofaLightningTalkIgaveatCppCon2021.Alinktothevideowillbegivenhereassoonasit’savailable.I'lltouchonalightersubjectthisweek,nonethelessquiteimportant:ismycatTuring-complete?MeetPeluchePeluche(meaning“plush”inFrench)isasmoothcatthatsomehowlivesinmyhouse.Shewillbeourtestsubjecttoday.IsPelucheTuring-complete?WhatisTuring-completenessTuring-completenessisthenotionthatifadevicecanemulateaTuringmachine,thenitcanperformanykindofcomputation1.Itmeansthatanymachinethatimplementstheeightfollowinginstructionsisacomputer(andcanthusexecuteanykindofcomputation):.and,:Inputtingandoutputtingavalue+and-:Increaseanddecreasethevaluecontainedinamemorycell2.>and<:Shiftthecurrentmemorytapeleftorright.[and]:Performingloops.So,ifPeluchecanperformtheseeightinstructions,wecanconsiderherTuring-complete.ProofoftheTuring-completenessInputandoutputFirst,ItriedtopokePelucheifIcouldgetareaction.Shelookedatme,thenjustturnedaround.Sohereitis:Ipokedher,andIgotareaction.Soshecanprocessinputsandgiveoutputs.Input/outputconfirmed!IncreaseanddecreasememoryvalueTheotherday,Icamebackfromworktothis:Kibbleseverywhere;ButthenItookacloserlookandrealizedthattheslabscouldbenumbered,likethis:Thislooksprettymuchlikeamemorytapetome!Sinceshecanspillkibblesonthetilesandtheneatthemdirectlyfromthefloor,shecanincreaseanddecreasethevaluescontainedinagivenmemorycell.Increase/decreaseconfirmed!ShiftthecurrentmemorycellleftorrightAnothertime,Iwasdoingthedishesand inadvertently spilledsomewateronPeluche.Shebegantoruneverywherearoundthekitchen,makingahugemess.Ifyoulookclose(atthetipoftheredarrow),youmaynoticethatwhilemakingthismess,shedisplacedherbowl.Displacingherbowlmeansshewillspillherkibblesinanothertile.Thiscountsasshiftingthememoryheadtoeditanothermemorycell.Shiftofthememorytapeconfirmed!PerformloopsSo,afterthismess,I(obviously)hadtocleanup.Nomorethanfiveminuteslater,Iwentbacktothekitchentothis:Yeah…shecan DEFINITELY performloops…Loopsconfirmed!WehavejustproventhatPelucheis,indeed,Turing-complete.Sonow,howcanweusehertoperformhigh-performancecomputations?Whattodowithher?NowthatI’veproventhatPelucheisTuring-complete,Icanliterallydoanythingwithher!Thus,Itriedtogivehersimplecodetoexecute3:😾😾😾😾😾😾😾😾😿🐈😾🐈😾😾🐈😾😾😾🐈😾😾😾😾🐈😾😾😾😾😾🐈😾😾😾😾😾😾🐈😾😾😾😾😾😾😾🐈😾😾😾😾😾😾😾😾🐈😾😾😾😾😾😾😾😾😾🐈😾😾😾😾😾😾😾😾😾😾🐈😾😾😾😾😾😾😾😾😾😾😾🐈😾😾😾😾😾😾😾😾😾😾😾😾🐈😾😾😾😾😾😾😾😾😾😾😾😾😾🐈😾😾😾😾😾😾😾😾😾😾😾😾😾😾🐈😾😾😾😾😾😾😾😾😾😾😾😾😾😾😾🐈😾😾😾😾😾😾😾😾😾😾😾😾😾😾😾😾😻😻😻😻😻😻😻😻😻😻😻😻😻😻😻😻🐾😸🐈🐈🐈🐈🐈🐈🐈🐈🐈🙀😻😻😻😻😻😻😻😻😻🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐾🐾🐾🙀😾😾😾😻😻😻😻😻😻😻😻😻😻😻😻😻🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐾🐾🐾🐾🙀😾😾😾😾😻😻😻😻😻😻😻😻😻😻😻😻😻😻🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐾🐾🐾🐾🙀😾😾😾😾😻😻😻😻😻😻😻😻😻😻😻😻😻😻🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐾🙀😾😻😻😻😻😻😻😻😻😻😻😻😻😻😻🐈🐈🐈🐈🙀😻😻😻😻🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐾🙀😾😻😻😻😻😻😻😻😻😻😻😻😻😻😻😻🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐾🙀😾😻😻😻😻😻😻😻😻😻😻😻😻😻😻🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈😾😾🙀🐾🐾😻😻😻😻😻😻😻😻😻😻😻😻😻😻🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐾🐾🐾🐾🙀😾😾😾😾😻😻😻😻😻😻😻😻😻😻😻😻😻😻🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐈🐾🐾🐾🐾🙀😾😾😾😾😻😻😻😻😻😻😻😻😻😻😻😻😻🐈🐈🐈🐈🐈🐈🐾🐾🙀😾😾😻😻😻😻😻😻🙀Theresultwasfinal:shewouldn’tdoathing.Thoughtheycan,maybecatsarenotdesignedtoexecutecodeafterall?About"cat-computing"Jokesaside, cat-computing isthenameIgivetothisgeneralizedpractice.Inmyexperience,ithappensquiteoftenthatwhensomeonediscoversanewfeatureofalanguage,theybegintouseiteverywhere,justbecausetheycanandtheywantto.However,justlikeyoucanexecutecodeusingacat4 butshouldn’t,it’snotbecauseyou can useafeaturethatyou should.Theyweretoobusywonderingiftheycouldtothinkaboutwhethertheyshould.DRIANMALCOLM,JURASSICPARKWrappingupCat-computingseemstobearookiemistake(anditis),buteventhemostexperienceddeveloperssometimesmakerookiemistakes(andthere’snoshameinthat).Everythreeyears,anewversionofC++ispublished.Everytime,itmakesmewanttousethenewfeaturesineverypossiblesituation.Thoughthisisagoodopportunitytobuildsomeexperiencearoundthat(oneofthebestwaystoavoidmisusesofafeatureistoperformthesemisusesonce,inmyopinion),thisisalsofavorablegroundforacquiringbadpractices.Alwaysaskyourselfifafeatureisnecessary5 beforeusingit,orelseyoumaydocat-computing.Also,cat-computingisanimalabuse,sodon’tdoit.Thanksforreadingandseeyounextweek!(Nocatswereharmedduringthewritingofthisarticle,butonewasgentlypoked.)Author: ChloéLourseyreEditor: PeterFordhamAddendumNotesThisisasimplifieddefinition,veryinaccuratebutaccurateenoughforthisexample.Ifyouwanttherealdefinition,gothere: Turingcompleteness–WikipediaIdidnotstateitexplicitly,butaTuringmachinehasa“memorytape”with“memorycells”onit.Themachineisalwayspointingtoamemorycell,whichisthementioned“current”memorycell.Youmaynotbeabletoreadthissampleofcode—thisisafancynewlanguageIdesignedcalled“braincat”.Actually,youcan’texecutecodeusingacat,Iknow,butit’sforthesakeofthemetaphorthatIassumeyoucan.Ofcourse,necessityoccurswhenthereisaknownbenefittothefeature.I’mnottalkingabout“absolutenecessity”butabout“practicalnecessity”.附"我证明了它是图灵完备的!"这种情形要么发生在一个人花了六个月让他的洗碗机能够运行马里奥的时候,要么就是在被包围的时候作者:xkcd许可:CreativeCommonsAttribution-NonCommercial2.5License.链接:https://xkcd.com/2556/

RESTful 架构详解

RESTful架构详解指路👇👇👇👇👇👇👇👇https://www.runoob.com/w3cnote/restful-architecture.html

任务计划

注:本博客五天一更2020.12.14P3715CF702FCF710FGym101480C2020.12.19P4632Gym101480CP6144CF575A2020.12.24P7154P7155P46322020.12.29P3233CF639FP4606CF1320ELOJ6184P3803P4721P4238P4245CF632EAT2064CF1096G2021.1.4P2664P2993P6329P2056P38092021.1.9P2408P4051P4248P31812021.1.14马上要qmks了,估计今天rwjh里的全部内容会原样搬到1.19CF986DCF755GCF623ECF773FCF553ECF848EP3784P4002P4463P4491UVA11107P4051P2336P3649P4341P4070P5028P4081P4094P1117P3900P4770P60952021.1.19真就CV了呗。。。其实并没有完全CV,换了一道题而已。。。CF226ECF755GCF623ECF773FCF553ECF848EP3784P4002P4463P4491UVA11107P4051P2336P3649P4341P4070P5028P4081P4094P1117P3900P4770P60952021.1.24CF226ECF553ECF848EP3784P4002P4463P4491UVA11107P2336P3649P4341P4070P5028P4081P4094P1117P3900P4770P60952021.1.27CF553ECF848EP4002P4463P4705P5320UVA11107P2336P3649P4341P4070P5028P4081P4094P1117P3900P4770P6095P71732021.2.1就nm彻底自闭了,任务计划不降反增CF553ECF848EP4002P4463P4705UVA11107P2336P3649P4341P4070P5028P4081P4094P1117P3900P4770P6095P3288P4452P3163P3171P2304P2570P3199P4074UOJ435CF506DP3396CF587FCF601E2021.2.6u1s1这当中有的题都在里面躺了五六轮了就离谱CF553ECF848EP4002P4463P4705UVA11107P2336P3649P4341P4070P5028P4081P4094P1117P3900P4770P6095P3288P4452P3163P3171P2304P2570P3199CF576ECF601E2021.2.11🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊CF553ECF848EP4002P4463P4705UOJ269UVA11107P2336P3649P4341P4070P5028P4081P4094P1117P3900P4770P6095P3288P4452P3163P3171P2304P2570P31992021.2.18🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊CF553ECF848EP4002P4463P4705UOJ269UVA11107P2336P3649P4341P4070P5028P4081P4094P1117P3900P4770P6095P3288P4452P3163P3171P2304P2570P3199CF375CAT1982CF878DCF797FCF643FCF505ECF671DCF571DCF536DCF555EP3246CF266EAT4120CF446CP5280P7334P5138CF226EP6091P4718CF587FCF1327GCF163EP55992021.2.23🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊CF553ECF848EP4002P4463P4705UOJ269P3649P5028P4094P3900P4770P6095BZOJ4310CF204ECF700EP4022CF666ECF1063FCF653FP5353P3288P4452P3163P3171P2304P2570P3199CF643FCF671DCF571DCF536DCF555EP3246CF266EAT4120CF446CP5280P7334P5138CF981FCF917ECF700DCF605DP6371CF248E2021.2.28🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊CF553ECF848EP4002P4463P4705UOJ269P3900CF1063FCF741EP5284P5353P3288P4452P3163P3171P2304P2570P3199CF671DP3246CF446CP5280P5138CF248EP4284CF1340FCF671ECF498BCF643GCF627ECF763ECF889ECF704CCF436DCF708ECF1080E2021.3.5🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊🕊CF553ECF848EP4002P4463P4705UOJ269P5284P3288P4452P3163P3171P2304P2570P3199CF671DP3246CF248EP4284CF1340FCF671ECF498BCF627ECF763ECF889ECF704CCF436DCF708ECF1080EP3688CF573ECF1476GAT1983CF833DP3576P3596P1623AT3859CF115ECF285ECF917CCF193DCF1097GCF815CCF633H2021.3.16爽CF553ECF848EP4002P4463P4705UOJ269AT3872P3288P4452P3163P3171P2304P2570P31992021.3.25CF553ECF848EP4002P4463P4705UOJ269AT3872P3645CF671DCF671ECF613ECF804DP6619P6622~~AT2377P4679AT2045P5284P5289P43822021.3.28CF671DCF671EP4382P4384P4363P4364P4365P5643P5299P5644P5206P3822P3823P3825P3826UOJ422LOJ3399UOJ345P47692021.4.18我tm也太鸽了吧。。。P5206P4426AT3945P5360CF568CP3714P3343P5279P5210P5303P5354P3242P3759P3248P5039P4452P5332P5501P53372021.6.30我giao我都多少天没有更了……P5360CF568CP3714P5279P3242P3248P5332P4708P3285CF1396DP4243P5294CF1045AP1587P3783P5344CF1415FP5450CF983ECF1010FP4076CF1045EP3302P3206P7470P7620P5446CF613ECF652FCF1089IP52062021.8.3现在五周一更还差不多(CF568CP3714P5279P3242P3248P3285CF1394DP4243CF1415FCF1045EP3302P3206P5044CF917EP5812CF500GAT2268P6774CF1408IAT2348CF720BCF1063FCF1464FCF1473GCF1392IP4458P4217CF724EP3872P4082CF1106FP4365AT4515P4177P5295P5814P2304CF598FUOJ218

Educational Codeforces Round 76 (Rated for Div. 2) C. Dominated Subarray 水题

t;bits/stdc++.h>usingnamespacestd;constintmaxn=200005;intn,a[maxn],c[maxn];voidsolve(){cin>>n;intmx=9999999;for(inti=1;i<=n;i++){c[i]=0;}for(inti=1;i<=n;i++){cin>>a[i];if(c[a[i]]!=0){mx=min(i-c[a[i]]+1,mx);}c[a[i]]=i;}if(mx==9999999){cout<<"-1"<<endl;}else{cout<&

问题记录:解决𝘃𝟮𝗿𝗮𝘆代理HTTP没用的问题

𝘃𝟮𝗿𝗮𝘆-参数设置-本地监听端口改成1079。看𝘃𝟮𝗿𝗮𝘆N底部状态栏,发现http代理变成1080.

金蝶中间件上的springboot传文件问题

JFIFC$.'",#(7),01444'9=82<.342C 2!!22222222222222222222222222222222222222222222222222"}!1AQa"q2#BR$3br%&'()*456789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz

Codeforces Round #691 (Div. 1) B. Glass Half Spilled 背包DP

}dp[0][0]=0;for(inti=1;i<=n;i++){for(intj=n;j>=1;j--){for(intc=suma;c>=a[i];c--){dp[j][c]=max(dp[j][c],dp[j-1][c-a[i]]+b[i]);}}}for(intj=1;j<=n;j++){doubleans=0.0;for(intc=0;c<=suma;c++){//dp[j][c]+(sumb-dp[j][c])/2ans=max(ans,min(1.0*dp[j][c]+sumb,2.0*c));}printf("%.10f",ans/2.0);}}

sourceinsight 头文件和函数注释的宏实现

}}*//*****************************************************************************:ComentCPPtoCC++עΪCע:ֵ:ú::޸ʷ:1.:2008702:ǿ޸:ɺֿע*****************************************************************************/macr

2021-2022 ICPC, NERC, Northern Eurasia Onsite I. Interactive Treasure Hunt(交互)

ofthem.Youcanmaketwotypesofoperations:DIG𝑟r𝑐c:trytofindthetreasureinthecell(𝑟,𝑐)(r,c).Theinteractorwilltellyouifyoufoundthetreasureornot.SCAN𝑟r𝑐c:scanfromthecell(𝑟,𝑐)(r,c).TheresultofthisoperationisthesumofManhattandistancesfromthecell(𝑟,𝑐)(r,c)tothecellswherethetreasuresarehidden.Manhatta

mac下mysql无法使用中文问题

查询网上大部分资料是把/usr/local/mysql/support-files/目录下并没有my-default.cnf文件copy到/etc/my.cnf下,但是新版mac版mysql在/usr/local/mysql/support-files/目录下并没有my-default.cnf解决办法:1、首先关闭mysql服务(命令关闭或界面关闭自选)2、终端cd /etc3、sudovimmy.cnf4、i进入插入模式,复制下面文件拷贝进来5、esc退出编辑模式,输入:wq保存并退出6、在mysql命令模式下可以键入"status"来查看字符支持格式(1).修改前 (2).修改后附上my.cnf内容􏰀􏰁􏰂􏰃􏰄􏰅􏰆􏰇􏰈􏰉---------------------------------不包含-----------------------------------􏰊􏰋􏰌􏰍􏰎􏰏􏰐􏰑􏰒􏰓􏰔􏰕􏰖􏰁􏰗􏰘􏰙􏰚􏰛􏰑􏰜􏰝􏰞􏰟􏰁􏰠􏰡􏰢􏰁􏰣􏰟􏰇􏰤􏰥􏰋􏰙􏰀􏰁􏰂􏰃􏰄􏰅􏰆􏰇􏰈􏰉􏰊􏰋􏰌􏰍􏰎􏰏􏰐􏰑􏰒􏰓􏰔􏰕􏰖􏰁􏰗􏰘􏰙􏰚􏰛􏰑􏰜􏰝􏰞􏰟􏰁􏰠􏰡􏰢􏰁􏰣􏰟􏰇􏰤􏰥􏰊􏰋􏰌􏰍􏰎􏰏􏰐􏰑􏰒􏰓􏰔􏰕􏰖􏰁􏰗􏰘􏰙􏰚􏰛􏰑􏰜􏰝􏰞􏰟􏰁􏰠􏰡􏰢􏰁􏰣􏰟􏰇􏰤􏰊􏰋􏰌􏰍􏰎􏰏􏰐􏰑􏰒􏰓􏰔􏰕􏰖􏰁􏰗􏰘􏰙􏰚􏰛􏰑􏰜􏰝􏰞􏰟􏰁􏰠􏰡􏰢􏰁􏰣􏰟􏰇􏰤􏰥􏰋􏰙􏰊􏰋􏰌􏰍􏰎􏰏􏰐􏰑􏰒􏰓􏰔􏰕􏰖􏰁􏰗􏰘􏰙􏰚􏰛􏰑􏰜􏰝􏰞􏰟􏰁􏰠􏰡􏰢􏰁􏰣􏰟􏰇􏰤􏰥􏰋􏰙#ExampleMySQLconfigfileformediumsystems.##Thisisforasystemwithlittlememory(32M-64M)whereMySQLplays#animportantpart,orsystemsupto128MwhereMySQLisusedtogetherwith#otherprograms(suchasawebserver)##MySQLprogramslookforoptionfilesinasetof#locationswhichdependonthedeploymentplatform.#Youcancopythisoptionfiletooneofthose#locations.Forinformationabouttheselocations,see:#http://dev.mysql.com/doc/mysql/en/option-files.html##Inthisfile,youcanusealllongoptionsthataprogramsupports.#Ifyouwanttoknowwhichoptionsaprogramsupports,runtheprogram#withthe"--help"option.#ThefollowingoptionswillbepassedtoallMySQLclients[client]default-character-set=utf8#password=your_passwordport=3306socket=/tmp/mysql.sock#Herefollowsentriesforsomespecificprograms#TheMySQLserver[mysqld]character-set-server=utf8init_connect='SETNAMESutf8port=3306socket=/tmp/mysql.sockskip-external-lockingkey_buffer_size=16Mmax_allowed_packet=1Mtable_open_cache=64sort_buffer_size=512Knet_buffer_length=8Kread_buffer_size=256Kread_rnd_buffer_size=512Kmyisam_sort_buffer_size=8Mcharacter-set-server=utf8secure_file_priv=''init_connect='SETNAMESutf8'#Don'tlistenonaTCP/IPportatall.Thiscanbeasecurityenhancement,#ifallprocessesthatneedtoconnecttomysqldrunonthesamehost.#AllinteractionwithmysqldmustbemadeviaUnixsocketsornamedpipes.#NotethatusingthisoptionwithoutenablingnamedpipesonWindows#(viathe"enable-named-pipe"option)willrendermysqlduseless!##skip-networking#ReplicationMasterServer(default)#binaryloggingisrequiredforreplicationlog-bin=mysql-bin#binaryloggingformat-mixedrecommendedbinlog_format=mixed#requireduniqueidbetween1and2^32-1#defaultsto1ifmaster-hostisnotset#butwillnotfunctionasamasterifomittedserver-id=1#ReplicationSlave(commentoutmastersectiontousethis)##Toconfigurethishostasareplicationslave,youcanchoosebetween#twomethods:##1)UsetheCHANGEMASTERTOcommand(fullydescribedinourmanual)-#thesyntaxis:##CHANGEMASTERTOMASTER_HOST=<host>,MASTER_PORT=<port>,#MASTER_USER=<user>,MASTER_PASSWORD=<password>;##whereyoureplace<host>,<user>,<password>byquotedstringsand#<port>bythemaster'sportnumber(3306bydefault).##Example:##CHANGEMASTERTOMASTER_HOST='125.564.12.1',MASTER_PORT=3306,#MASTER_USER='joe',MASTER_PASSWORD='secret';##OR##2)Setthevariablesbelow.However,incaseyouchoosethismethod,then#startreplicationforthefirsttime(evenunsuccessfully,forexample#ifyoumistypedthepasswordinmaster-passwordandtheslavefailsto#connect),theslavewillcreateamaster.infofile,andanylater#changeinthisfiletothevariables'valuesbelowwillbeignoredand#overriddenbythecontentofthemaster.infofile,unlessyoushutdown#theslaveserver,deletemaster.infoandrestarttheslaverserver.#Forthatreason,youmaywanttoleavethelinesbelowuntouched#(commented)andinsteaduseCHANGEMASTERTO(seeabove)##requireduniqueidbetween2and2^32-1#(anddifferentfromthemaster)#defaultsto2ifmaster-hostisset#butwillnotfunctionasaslaveifomitted#server-id=2##Thereplicationmasterforthisslave-required#master-host=<hostname>##Theusernametheslavewilluseforauthenticationwhenconnecting#tothemaster-required#master-user=<username>##Thepasswordtheslavewillauthenticatewithwhenconnectingto#themaster-required#master-password=<password>##Theportthemasterislisteningon.#optional-defaultsto3306#master-port=<port>##binarylogging-notrequiredforslaves,butrecommended#log-bin=mysql-bin#UncommentthefollowingifyouareusingInnoDBtables#innodb_data_home_dir=/usr/local/mysql/data#innodb_data_file_path=ibdata1:10M:autoextend#innodb_log_group_home_dir=/usr/local/mysql/data#Youcanset.._buffer_pool_sizeupto50-80%#ofRAMbutbewareofsettingmemoryusagetoohigh#innodb_buffer_pool_size=16M#innodb_additional_mem_pool_size=2M#Set.._log_file_sizeto25%ofbufferpoolsize#innodb_log_file_size=5M#innodb_log_buffer_size=8M#innodb_flush_log_at_trx_commit=1#innodb_lock_wait_timeout=50[mysqldump]quickmax_allowed_packet=16M[mysql]no-auto-rehash#RemovethenextcommentcharacterifyouarenotfamiliarwithSQL#safe-updatesdefault-character-set=utf8[myisamchk]key_buffer_size=20Msort_buffer_size=20Mread_buffer=2Mwrite_buffer=2M[mysqlhotcopy]interactive-timeout---------------------------------不包含-----------------------------------

oracle 18c ORA-01078: failure in processing system parameters

SQL>startup;ORA-01078:failureinprocessingsystemparametersLRM-00109:'.../oracle/oracle/product/18/db_1/dbs/initorcl.ora'方法1:将本目录下init.ora复制一份为initorcl.ora方法2:从路径/data/oracle/oracle/admin/orcl/pfile/复制一份

数据挖掘之回归聚类算法总结

𝑥+𝑏)<1and𝛼=𝐶(在分割超平面内,是误差点->C表示它该受到的惩罚因子程度)C值越大,表示离群点影响越大,就越容易过度拟合;反之有可能欠拟合。我们看到,目标函数控制了离群点的数目和程度,使大部分样本点仍然遵守限制条件。例如:正类有10000个样本,而负类只给了100个(C越大表示100个负样本的影响越大,就会出现过度拟合,所以C决定了负样本对模型拟合程度的影响!,C就是一个非常关键的优化点。)经过添加松弛变量的方法,我们现在能够解决数据更加混乱的问题。通过修改参数C,我们可以得到不同的结果而C的大小到底取多少比较合适,需要根据实际问题进行调节。(1)线性可分支持向量

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