其他

/*用map，注意重複ConstraintsTime Limit: 1 secs, Memory Limit: 32 MBDescriptionDNA (Deoxyribonucleic acid) is founded in every living creature as the storage medium for genetic information. It is comprised of subunits called nucleotides that are strung

/*用sort預設排序的話，考慮ba和bConstraintsTime Limit: 1 secs, Memory Limit: 32 MBDescriptionDr lee cuts a string S into N pieces,s[1],…,s[N]. Now, Dr lee gives you these N sub-strings: s[1],…s[N]. There might be several possibilities that the string S could

ConstraintsTime Limit: 1 secs, Memory Limit: 32 MB DescriptionAlice and Bob need to send secret messages to each other and are discussing ways to encode their messages: Alice: "Let's just use a very simple code: We'll assign `A' the code word 1, `B'

/*ConstraintsTime Limit: 1 secs, Memory Limit: 32 MBDescriptionFind and list all four-digit numbers in decimal notation that have the property that the sum of its four digits equals the sum of its digits when represented in hexadecimal (base 16)

對HBase的操作，有時候需要不在叢集內部，也就是說A、B、C三台主機構建HBase，現在需要主機D來操作HBase。client是通過Zookeeper來訪問HBase的，而Zookeeper通過DNS解析主機名稱來訪問ip，通過以下兩步就可以用主機D來操作HBase把client的hosts上添加A，B，C的主機名稱和ip（linux是/etc/hosts，windows是c:\windows\system32\drivers\hosts）在程式中寫入:conf =

/*用兩個map來存資料DescriptionBusinesses like to have memorable telephone numbers. One way to make a telephone number memorable is to have it spell a memorable word or phrase. For example, you can call the University of Waterloo by dialing the memorable

/*ConstraintsTime Limit: 1 secs, Memory Limit: 32 MBDescriptionFly It Today! (FIT), an air express company, charges different amounts for packages depending on their weight. For example, one set of rates may be:Package weight Cost per pound0 to 9

ConstraintsTime Limit: 1 secs, Memory Limit: 32 MBDescriptionIt's preseason and the local newspaper wants to publish a preseason ranking of the teams in the local amateur basketball league. The teams are the Ants, the Buckets, the Cats, the

ConstraintsTime Limit: 1 secs, Memory Limit: 32 MBDescriptionIn the field of computer science, forest is important and deeply researched , it is a model for many data structures . Now it’s your job here to calculate the depth and width of given

#include<iostream>#include<vector>#include<map>#include<algorithm>#include<fstream>#include<stack>#include<bitset>using namespace std;int main(){int

/*ConstraintsTime Limit: 1 secs, Memory Limit: 32 MBDescriptionMo and Larry have devised a way of encrypting messages. They first decide secretly on the number of columns and write the message (letters only) down the columns, padding with extra

ConstraintsTime Limit: 1 secs, Memory Limit: 32 MBDescriptionHanoi Tower is a famous game invented by the French mathematician Edourard Lucas in 1883. We are given a tower of n disks, initially stacked in decreasing size on one of three pegs. The

#include<iostream>#include<vector>#include<algorithm>#include<fstream>#include<bitset>using namespace std;int main(){int n;while(cin>>n&&n>0){vector<string> data(n);string sum("0");for(int

有時候會有這樣的需求，需要刪除指定某些行的資料。但是筆者看《HBase權威指南》好像沒有Delete的filter（過濾器），所以想了一下如果實現刪除指定行的方法如果知道要刪除某些行的行鍵，那麼很簡單，用List<Delete>就可以完成這個功能如果要刪除的行在表中是連續的，也就是刪除指定範圍的行，但是你還不知道這個範圍內所有的行鍵，比如一個表中行鍵11-19的行，但是表中只有11,13,16。這時可以採用的方法是用Scan先讀出範圍內的行鍵，用Scan方法就可以使用Filter，其

//用map來儲存圖//遞迴先序遍曆#include<iostream>#include<set>#include<vector>#include<map>using namespace std;typedef struct NODE{char value;int parent;int lchild;int rchild;//struct

問題描述：給定日期，求距離n天的前後日期int month(int y, int m){if (m==1 || m==3 || m==5 || m==7 || m==8 || m==10 || m==12)return 31;if (m==4 || m==6 || m==9 || m==11)return 30;if (y%4==0 && y%100!=0 || y%400==0)return 29;return 28;}int main(){int

最優二叉樹的思想可以應用在很多方面，下面就是一個例子：/*Description“What an amazing garden!” Tiantian exclaimed. When she walks in the garden, she finds that fruit falls and automatically forms a line! “Maybe you can be superwoman after eating all the fruit” Tiantian said to

對於一般檔案，都有滿足隨機讀寫的api。而hadoop中的讀api很簡單用FSDataInputStream類就可以滿足一般要求，而hadoop中的寫操作卻是和普通java操作不一樣。hadoop對於寫操作提供了一個類：FSDataOutputStream，這個類重載了很多write方法，用於寫入很多類型的資料：比如位元組數組，long，int，char等等。像FSDataInputStream一樣，要獲得FSDataOutputStream的執行個體，必須通過FileSystem該類來和HDF

今天用hadoop API打算往hadoop叢集建立幾個檔案，然後寫入資料試試，結果問題發生了，我的設定檔備份數是1，但是不管我怎麼建立，建立的檔案備份數都是3。代碼如下：public static void testHDFS() throws IOException{String str="hdfs://cloudgis4:9000/usr/tmp/";Path path=new Path(str);Configuration conf=new

DescriptionProblems involving the computation of exact values of very large magnitude and precision are common. For example, the computation of the national debt is a taxing experience for many computer systems. This problem requires that you write