hackerrank alternatives

DescriptionHave \ (n\) skills, each time through a wizard, a skill can be turned into another skill, ask most how many different skills.SolNetwork flow.First of all, the very naive I started, the skill will be split, the middle plus a list of wizards, \ (s\) to the initial skills of the number of edge capacity, the corresponding point between the capacity of the inf\, and then from the point to \ (t\) to the edge, the capacity is \ (1\), the wizard from the left side of a point to the right even

Please note input constraints. String length won't exceed, which means, we can use relatively naive representation\calculation for Anagrams:sorti Ng.#include #include#include#include#include#includeusing namespacestd;intCalcstringstr) { intRET =0; size_t Len=str.length (); Unordered_mapstring,int>Rec; for(size_t Ilen =1; Ilen ) { for(size_t i =0; I ) { stringCurr =str.substr (i, Ilen); Std::sort (Curr.begin (), Curr.end ()); Rec[curr]++; }

Original title AddressLeetcode also have this problem, directly sweep over the line, even the array is not open, feel like a certain kind of moving into the thought in the inside, to not be a moving titleCode:1#include 2#include 3#include 4#include 5#include 6 using namespacestd;7 8 intMain () {9 /*Enter your code here. Read input from STDIN. Print output to STDOUT*/ Ten intN; One intCurr_score, Prev_score, curr_cnt; A intdir, Len; - intres =0; - thePrev_score =-1; -curr_c

Typical tree recursion works. The key Is:any node can be treated as the root, since it was about edge and not on node. This simplifies things a lot.#include #include#include#include#include#includeusing namespaceStd;typedefLong Longlong64;structnode{Node (): Val (0{} Node (unsigned v): Val (v) {} long64 val; Unordered_setint>Inx;}; LONG64 ret= std::numeric_limits:: Max (); long64 Go (Vectorintroot, long64 tsum) {Noden =Nodes[root]; long64 Currsum=N.val; for(intI:n.inx) {nodes[i].inx.eras

Simplied a dfs\bfs with minor modification.#include #include#include#include#include#includeusing namespacestd;typedef VectorChar>>Matrix;typedef pairint,int>Pos;BOOLIsway (Matrix m,intIintj) { returnM[j][i] = ='.'|| M[j][i] = ='*';}BOOLGo (Matrix m, pos curr, POS DST,Const intKintN) { if(Curr = =DST) { returnn = =K; } inth =m.size (); intW = m[0].size (); inti =Curr.first; intj =Curr.second; VectorCands; if(I >0 Isway (M, I-1, J)) {Cands.push_back (Pos (i-1, J)); } if(I 1 Isw

]; -START_INDEX_A[I][J] = start_index_a[i +1][j]; theSTART_INDEX_B[I][J] = start_index_b[i +1][j]; +}Else { ALCD[I][J] = lcd[i][j +1]; theSTART_INDEX_A[I][J] = start_index_a[i][j +1]; +START_INDEX_B[I][J] = start_index_b[i][j +1]; - } $ } $ } - - inti = start_index_a[0][0]; the intj = start_index_b[0][0]; - while(I >=0 J >=0) {Wuyicout " "; the intII = Start_index_a[i +1][j +1]; - intJJ = Start_index_b[i +1][j +1]; Wui =II; -j =JJ; About

) Constraints1 S-1000 XX∈ ar Sample Input 71 3 9 8 2 7 5 Sample output 1 ExplanationInsertion Sort will take 9 "shifts" to sort the array. quicksort will take 8 "swaps" to sort it, as shown in the dimo-below. 9-8 = 1, the output. Question: the difference in the number of moves between quick sorting and inserted sorting elements in sorting. For insert sorting, count the number of moving elements; for fast sorting, count the number of switching elements (including switching between yourself and

Static intGetnumberofprimes (intN) {intn = n+1;//To include 0 as the first number for easy index operations later Final BooleanA[] =New Boolean[n];//Initialized to NULL by default.Arrays.fill (A,true); a[0] =false; a[1] =false; for(inti = 2; i i) {if(A[i]) { for(intj = i + i; J i) a[j]=false; } } intCount = 0; for(inti = 2;ii) {if(A[i]) {//System.out.print (i+ ",");++count; } } returncount; }[Hackerrank] P

A natural thought is brutal-force. But as you may have already thought of, there must be a smarter one. And yes there is. Think like this: XOR gives you all different bits, if you cocould imagine the binary representation of L ^ r, it can be represented as: 1xxxxx... what is asked is the 'maximum 'value of L ^ r-and that means 1111111... so this maximum value only depends on which is the highest 1-it is irrelevant with all intermediate values. so now the question turns to be: Which is the highe

Use alternatives to convert the java version-general Linux technology-Linux programming and kernel information. The following is a detailed description. After jdk was installed, java and javac were replaced with the java and javac of gij in/usr/bin. Some people on the Internet said that they could use a tool named alternativs to migrate the software version in linux. They decided to use alternatives to mig

Tian haili @ csdn Different Android platforms use different JDK versions during compilation. For example, froyo (2.2) and its earlier versions require JDK; gingerbread and later versions require JDK. If you want to build different platform projects in an environment, you need to install different JDK. It takes time and effort to install JDK repeatedly during project switching. Update-alternatives provides a solution for this situation. This article

By default, even with Java 1.6 version Java script jdk-6u31-linux-i586.bin, when Java is installed, it will automatically upgrade to a 1.7 version state. For some applications that need to be run based on version 1.6, a downgrade of 1.6 is required. There are two specific ways to do this:1. Use the alternatives command to implement.Alternatives is a powerful command under Linux, and can only be executed under root authority. If there are several comma

Up vote 1 down vote favorite I typed:sudo update-alternatives --install "/usr/bin/java" "java" "/usr/lib/jvm/ jdk1.8.0/bin/java" 1It ' s says alternatives--install needs link name path priorityCommand-Line Edubuntu ShareImprove this question Edited Jul 5 ' + at 17:48 Guntbert4,344 Asked Jul 5 ' + at 16:22 Swapnil18

Since the development of Linux, there have been a lot of available software. In this way, some software functions are basically the same. For example, there are nvi, Vim, emacs, and nano in the editor. What I'm talking about is only part of it. In most cases, software with similar functions is installed in the system at the same time and can be executed using their names. For example, to execute vim, you only need to input Vim in the terminal and press Enter. However, in some cases, we need to u

View the location of the Java commandFind the soft link location for/etc/alternatives/javaIt allows us to see all the optional commands for a command. Execute code:There are two types of alternative: automatic and manual. The initial state of each alternative is automatic, and if the system discovers that the administrator has manually modified a alternative, its status is automatically changed to manualView the current Java versionMy JDK is in this f

Previously, the jdk of ubuntu was installed with the apt-get install command. The default installation is openjdk, and the path is/usr/lib/jvm /. If you need to switch or upgrade the java version, you can use update-alternatives. Of course, you can uninstall and reinstall it, or you can install it by setting environment variables. This section describes how to install update-alternatives.Since the development of Linux, there have been a lot of availab

In the past two days, I wanted to develop the android development environment in Linux, But I encountered a big problem when installing Sun's Java 6. The source cannot be found. The final installation method is to download the binfile of Java 6 on the official website, modify the/etc/profile file, and specify the location of Java, so that the Java command is available. Then you need a command to specify which software the Java command is provided, that is, the default software. The reason for th

Use update-alternatives to switch the default java commands in ubuntuSky @ sky-VGN-CR23-B :~ $ Cd/usr/java/jdk1.7.0 _ 21/Sky @ sky-VGN-CR23-B:/usr/java/jdk1.7.0 _ 21 $ cd ..Sky @ sky-VGN-CR23-B:/usr/java $ sudo ln-s./jdk1.7.0 _ 21./jdk1.7Sky @ sky-VGN-CR23-B:/usr/java $ sudo rm jdk-7u21-linux-i586.tar.gz.Sky @ sky-VGN-CR23-B:/usr/java $ sudo update-alternatives -- install/usr/bin/java/usr/java/jdk1.7/bin/ja

Article 35: Consider alternatives other than the virtual function Article 35 consider alternatives other than the virtual function Realizing template method mode by Non-virtual interface technique Implementing strategy mode with function pointers Complete strategy mode with Tr1function The classical strategy model Summary Virtual func

Update-alternatives is a tool dedicated to maintaining the system command link in the Ubuntu system, which makes it easy to set which command the system uses by default, which software version, for example, we have both open jdk and Sun JDK Two versions installed in the system. And we want the system to use the sun JDK by default, what should we do? Through the update-alternatives can be very convenient to