Hackerrank

多项式回归模型（Office Prices）

题目：https://www.hackerrank.com/challenges/predicting-office-space-price 分析：还是上次的房价预测题目，指明要用多项式回归拟合。
acdreamers·2015-05-28 21:31

多项式回归模型（Office Prices）

题目：https://www.hackerrank.com/challenges/predicting-office-space-price 分析：还是上次的房价预测题目，指明要用多项式回归拟合。
ACdreamers·2015-05-28 21:00

Hackerrank - The Good Node

原题来自Careercup:http://www.careercup.com/question?id=5840928073842688WehavealistofNnodeswitheachnodepointingtooneoftheNnodes. Itcouldevenbepointingtoitself.Wecallanode‘good’, ifitsatisfiesoneofthefollow
yuanhisn·2015-05-28 09:00

Hackerrank - Smart IDE Extract Comments

 用perl来处理正则表达式比较方法，代码很少。my$str=""; while(<>){ $str.=$_; } my$out=""; while($str=~/(\/\*.*?\*\/|\/\/.*?\n)/gs){ my$comment=$1; if($comment=~/^\/\*/g){ $comment=~s/\n[^\S\n]*/\n/g; } if(($oute
yuanhisn·2015-05-28 09:00

雅虎刷题狂人曹鹏：10年理论与实践结合的程序员之路

曾为浙江大学、浙江省大学生程序设计竞赛的命题人，是hackerrank.com、hackerearth.com和csdn英雄会、CSDN高校编程挑战的命题人，也是PAT(ProgrammingAbilityT
qq_20480611·2015-05-24 23:00

房价预测（HackerRank）

从今天开始要多做一些关于机器学习方面的竞赛题目，题目来源主要是Hackerrank和Kaggle。
acdreamers·2015-05-23 21:36

房价预测（HackerRank）

从今天开始要多做一些关于机器学习方面的竞赛题目，题目来源主要是Hackerrank和Kaggle。
ACdreamers·2015-05-23 21:00

Hackerrank - Smart IDE Extract Comments

 用perl来处理正则表达式比较方法，代码很少。my$str=""; while(<>){ $str.=$_; } my$out=""; while($str=~/(\/\*.*?\*\/|\/\/.*?\n)/gs){ my$comment=$1; if($comment=~/^\/\*/g){ $comment=~s/\n[^\S\n]*/\n/g; } if(($oute
yuanhsh·2015-04-09 11:00

一来就给LeetCode跪了

之前的OJ战场在 HackerRank ，今天终于禁不住铺天盖地的诱惑，加入 LeetCode 大军按照学编程就从“Helloworld!”开始的尿性，刷OJ当然也从1号题出发Aha~~~！
jmy5945hh·2015-03-24 20:00

【hackerrank】数据结构

SwapNodes  SuccessRate: 79.69% MaxScore: 40 Difficulty: ModerateSolveChallengeMatrixRotation  SuccessRate: 82.35% MaxScore: 40 Difficulty: ModerateSolveChallengeValidBST  SuccessRate: 86.72% MaxScore:
brandohero·2015-01-04 03:00

[hackerrank] 结构化字符串（解析树）

GenerateStringfromRegexAuthoredby abhiranjan on Jan102014 https://www.hackerrank.com/challenges/regex-to-string-fpProblemSubmissionsLeaderboardDiscussionsEditorial
brandohero·2015-01-04 03:00

查询两个字符串共有字符长度

在hackerrank上看到的题目，查找两个长度相同的字符串的共有字符的长度。a，b两个字符串只包含大写字母。他们的最大长度为5000.下面是我实现的一个算法。testcase运行成功。
目标是大神·2014-12-31 11:00

Hackerrank--Ashton and String (后缀数组）

 #include #include #include usingnamespacestd; #definemaxn100100 intwa[maxn],wb[maxn],wv[maxn],ws[maxn]; intr[maxn],sa[maxn]; charstr[maxn]; intcmp(int*r,inta,intb,intl) {returnr[a]==r[b]&&r[a+l]==r[b
KIDGIN7439·2014-12-19 21:00

【hackerrank】图论内容

https://www.hackerrank.com/challenges/journey-to-the-moon二难题 
brandohero·2014-12-12 21:00

【hackerrank】字符串题目

1简单题：回文串  str中删除某个字母，剩余部分是一个回文：O（n）KMP http://hihocoder.com/problemset/problem/1082#include #include #include usingnamespacestd; intmain(){ chartmp[10]="marshtomp",rep[10]="fjxmlhx"; vectorpre(10,-1);
brandohero·2014-12-12 20:00

分享我的书签

Hackerrank：也是在线oj，但有一些机器学习类的题目，很不错。kaggle：机器学习/数据挖掘竞赛平台，很
CodeMeals·2014-11-27 20:00

某R开头公司在Hackerrank上的一道3小时面试题

题目：在世界的某个地方（具体记不清了，好像是北极附近）有一些岛（Vertices）和岛之间的桥（Edges）。因为气温太低，有些桥比较人性化，桥面安装了加热设备（HOTBRIDGES），但为了省钱（或是其他原因，记不清了）不是所有桥都装有加热设备(COLDBRIDGES)。假设一个人从某个岛（Source）通过一些桥去往另一个岛（Destination），求满足以下条件的最短路径（Djistra）
u011029779·2014-11-16 03:00

【HackerRank】Common Child (LCS)最长公共子序列

Giventwostringsaandbofequallength,what’sthelongeststring(S)thatcanbeconstructedsuchthatSisachildtobothaandb.Stringxissaidtobeachildofstringyifxcanbeformedbydeleting0ormorecharactersfromyInputformatTwo
xiaozhuaixifu·2014-04-19 16:00

【HackerRank】Red John is Back (Dynamic programming)简单递推

RedJohnhascommittedanothermurder.Butthistime,hedoesn’tleavearedsmileybehind.WhatheleavesbehindisapuzzleforPatrickJanetosolve.HealsotextsTeresaLisbonthatifPatrickissuccessful,hewillturnhimselfin.Thepuz
xiaozhuaixifu·2014-04-13 17:00

【HackerRank】Angry Children 2 排序+动态规划

BillGatesisononeofhisphilanthropicjourneystoavillageinUtopia.HehasNpacketsofcandiesandwouldliketodistributeonepackettoeachoftheKchildreninthevillage(eachpacketmaycontaindifferentnumberofcandies).Toavo
xiaozhuaixifu·2014-04-07 15:00

hackerrank: Insertion Sort Advanced Analysis

InsertionSortAdvancedAnalysisInsertionSortisasimplesortingtechniquewhichwascoveredinpreviouschallenges.Sometimes,arraysmaybetoolargeforustowaitaroundforinsertionsorttofinish.Istheresomeotherwaywecanca
Alexander_zhou·2014-02-19 18:00

【hackerrank】Insertion Sort Advanced Analysis

InsertionSortisasimplesortingtechniquewhichwascoveredinpreviouschallenges.Sometimes,arraysmaybetoolargeforustowaitaroundforinsertionsorttofinish.IstheresomeotherwaywecancalculatethenumberoftimesInsert
xiaozhuaixifu·2013-12-26 19:00

【Hackerrank】Reverse a doubly linked list

You’regiventhepointertotheheadnodeofadoublylinkedlist.Reversetheorderofthenodesinthelist.TheheadnodemightbeNULLtoindicatethatthelistisempty.InputFormatYouhavetocompletetheNode*Reverse(Node*head)method
xiaozhuaixifu·2013-12-16 22:00

【Hackerrank】Insert a node into a sorted doubly linked list

You’regiventhepointertotheheadnodeofasorteddoublylinkedlistandanintegertoinsertintothelist.Thedatainthenodesofthelistareinascendingorder.Createanodeandinsertitintotheappropriatepositioninthelist.Thehe
xiaozhuaixifu·2013-12-16 16:00

【Hackerrank】Find the merge point of two joined linked lists

You’regiventhepointertotheheadnodesoftwolinkedliststhatmergetogetheratsomenode.Findthenodeatwhichthismergerhappens.ThetwoheadnodeswillbedifferentandneitherwillbeNULL.InputFormatYouhavetocompletetheint
xiaozhuaixifu·2013-12-16 14:00

【Hackerrank】Delete duplicate-value nodes from a sorted linked list

You’regiventhepointertotheheadnodeofasortedlinkedlist,wherethedatainthenodesisinascendingorder.Deleteasfewnodesaspossiblesothatthelistdoesnotcontainanyvaluemorethanonce.Thegivenheadpointermaybenullind
xiaozhuaixifu·2013-12-16 09:00

【Hackerrank】Get the value of the node at a specific position from the tail

You’regiventhepointertotheheadnodeofalinkedlistandaspecificposition.Countingbackwardsfromthetailnodeofthelinkedlist,getthevalueofthenodeatthegivenposition.Apositionof0correspondstothetail,1corresponds
xiaozhuaixifu·2013-12-16 09:00

【Hackerrank】Merge two sorted linked lists

ThischallengeispartofatutorialtrackbyMyCodeSchoolYou’regiventhepointertotheheadnodesoftwosortedlinkedlists.Thedatainbothlistswillbesortedinascendingorder.Changethenextpointerstoobtainasingle,mergedlin
xiaozhuaixifu·2013-12-13 20:00

[置顶] 程序员求职之道（《程序员面试笔试宝典》）之求职有用网站及QQ群一览表

www.cnblogs.com/http://oj.leetcode.com/http://wikioi.com/http://codility.com/http://coolshell.cn/（酷壳）https://www.hackerrank.com
xdhehao·2013-10-20 21:00

在线学习编程网站收集

update2015-11-11收集到几个做题网站http://www.codewars.com/  Codewarshttp://codeforces.com/    codeforceshttps://www.hackerrank.com
hengyunabc·2013-06-16 14:00

hackerrank challenges median

题目链接MediandynamicMaxScore: 67Themedianof M numbersisdefinedasthemiddlenumberaftersortingtheminorderif M isoddortheaveragenumberofthemiddle2numbers(againaftersorting)if M iseven.Youhaveanemptynumberlis
xindoo·2013-04-09 20:00

interviewstreet pair

链接 https://www.hackerrank.com/challenges/pairs      题意大概是输入n和k，然后是n个数每个数在10^9范围内，计算出有多少对a[i]和a[j]使得a[
xindoo·2013-03-12 18:00

hackerrank Stock Maximize

YouralgorithmshavebecomesogoodatpredictingthemarketthatyounowknowwhatthesharepriceofWoodenOrangeToothpicksInc.(WOT)willbeforthenextNdays.Eachday,youcaneitherbuyoneshareofWOT,orsellanynumberofsharesofW
sunjilong·2013-03-08 12:00

HackerRank网站，为编码程序员们提供一个以编码谜题和现实生活中遇到的编码难题为基础的新兴的社交平台

      https://www.hackerrank.com/      HackerRank网站，为编码程序员们提供一个以编码谜题和现实生活中遇到的编码难题为基础的新兴的社交平台。      
xindoo·2013-01-09 16:00

Hackerrank - The Good Node

原题来自Careercup: http://www.careercup.com/question?id=5840928073842688 We have a list of N nodes with each node pointing to one of the N nodes.  It could even be pointing to itself. We call a nod
yuanhsh·2011-05-24 12:00
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