big java solutions

Bubble Sort: http://blog.csdn.net/pzhtpf/article/details/75602941 Public classBubblesort {2 PublicBubblesort () {3 inta[]={49,38,65,97,76,13,27,49,78,34,12,64,5,4,62,99,98,54,56,17,18,23,34,15,35,25,53,51}; 4 intTemp=0; 5 for(inti=0;i){ 6 for(intj=0;j){ 7 if(a[j]>a[j+1]){ 8temp=A[j]; 9A[j]=a[j+1]; Tena[j+1]=temp; One } A } - } - for(inti=0;i) the System.out.println (A[i]); - } -}Programmers must know 8

About conversion of dates: Refer to the code below---Blog Park Lao Niu da Lecture HallCode purpose: 1, mainly to convert the date type of the string to a date type2. Calculate the date of N days.3, the calculation results into a string.Learn more about conversions between strings: http://www.blogjava.net/Werther/archive/2009/06/09/280954.htmlPackage Text;import Java.text.parseexception;import Java.text.simpledateformat;import java.util.Calendar;import Java.util.date;public class Text {public

line 1th of the file is the sum of the minimum length of the oil pipeline between the wells and the main road.Example 1 sample input 1[copy] 51 22 21 3 3-23 3 Sample output 1[Copy] 6 LimitEach test point 1sTipsEach test point 1sSourceClassic AlgorithmsAlways eat watermelon drink farmers Spring is not the way ah ...Import Java.io.*;import java.util.*;p ublic class main{public static void Main (string[] args) {//TODO auto-generated Metho D stubscanner input = new Scann

Course Catalogue:Database performance optimization (111-116)Data layer processing and Performance Optimization section (99-110)Logic layer processing and Performance Tuning section (51-98)High concurrency and performance optimizations for the Web Tier section (24-50)Distributed Architecture and Deployment section (1-23)Stage two course outline. docxSenior Architect two source courseware. rar：Baidu Network Disk DownloadAdvanced Java System Training Arc

( ); }}/***/Publicclassimplements ifactory{ @Override public Leifeng Createleifeng () { returnnew Volunteer ();} } /***/Publicclass Test {publicstatic void Main (string[] args) { new volunteerfactory (); = Volunteerfactory.createleifeng (); Leifeng.sweep (); Leifeng.buyrice (); Leifeng.wash (); }}If we add a different role, we just need to add the corresponding factory and role domain can be implemented without modifying the o

(M2.getcdate ()))return 1;if (M.getcdate (). Equals (M2.getcdate ()))return 0;if (M.getcdate (). Before (M2.getcdate ()))return-1;}else if (O1 instanceof Message O2 instanceof Checkrecord) {Message m= (message) O1;Checkrecord m2= (Checkrecord) O2;if (M.getmessagedate (). After (M2.getcdate ()))return 1;if (M.getmessagedate (). Equals (M2.getcdate ()))return 0;if (M.getmessagedate (). Before (M2.getcdate ()))return-1;}return 0;}Write a log not easy, reprint please indicate source: http://blog.c

= System.out log4j.appender.stdout.layout = org.apache.log4j.PatternLayout Log4j.appender.stdout.layout.ConversionPattern = [%-5p]%d{yyyy-mm-dd hh:mm:ss,sss} method:%l%n%m%n Once configured, if you don't start Hadoop, you need to start Hadoop first. Configure Run/debug Configurations After you start Hadoop, configure the run parameters. Select the class that contains the main function, fill in the input file and the output path. (see the article in detail:

Java programmer imitation "big shot" classic dialogue (from Javaeye's Nighthaven) ... Entertainment and entertainment. Imitation of the classic dialogue: Be sure to find the most popular frame,With the most powerful editor of the function,To do is to do the most complex system,Lightweight absolutely not,The simplest of frames is spring,What EJB Ah, hibernate ah, seam ah, can use all have to use,The presen

str2) {//Converts the received string into a reversed char array string Buffer buffer = new StringBuffer (); Buffer.append (STR1); char[] nums1 = Buffer.reverse (). toString (). ToCharArray (); Buffer.setlength (0); Buffer.append (STR2); char[] Nums2 = Buffer.reverse (). toString (). ToCharArray ();//pre-declaring an array, Used to hold the result of multiplying the individual digits (similar to column vertical) int len = nums1.length+nums2.length;int [] array = new int[len];//simulate vertical

In the range of 128 to 127, the integer object is generated in the Integercache.cache, the existing object is reused, the integer value within this interval can be judged directly using = =, but all data outside this interval will be generated on the heap, Does not reuse existing objects, this is a big pit, it is recommended to use the Equals method to judge. Public classProgram { Public Static voidMain (string[] args) {Integer A1= 1; Integer B1= 1; S

) {System.out.println (current.data); Current=Current.next; } } //Reverse Print linked list Public voidReverseprint () {Node current= This. Tail; while(Current! =NULL) {System.out.println (current.data); Current=Current.prev; } } Public Static voidMain (String args[]) {mydoublelinklist linklist=Newmydoublelinklist (); Linklist.addhead ("AAAA");//System.out.println (Linklist.getdata (1));Linklist.addtail ("BBBB");//System.out.println (Linklist.getdata (3));Linklist.adddata (2, "

("Parameter Error"); } if(indexsize) { for(inti=size-1;i>index;i--) {List[i-1] =List[i]; }} size--; } } Public classListtest { Public Static voidMain (String args[]) {sequencelist seq=NewSequencelist (20); Try{Seq.doinsert ("AA", 1); Seq.doinsert ("BB", 2); Seq.doinsert ("CC", 3); for(intj=0;j) {System.out.println (Seq.getelement (j));} } Catch(Exception e) {//TODO auto-generated Catch blockE.printstacktrace (); } } }public class Studentlist {public static void main

HDU 1316 How Many Fibs? Java big data (water, hdufibsWater and water .. import java.math.*; import java.util.*; import java.io.*; public class Main {BigInteger[] fib = new BigInteger[505];public void work(){fib[1] = BigInteger.ONE;fib[2] = BigInteger.valueOf(2);for(int i = 3; i Categories of topics on acm Let me have a look at this information.Peking University ACM (PKU JudgeOnline) subject category1. S

Obtain xx data files from the ftp host. tens of millions is just a concept, which means that the data volume is equal to or greater than ten millions. This sharing does not involve distributed collection and storage. data is processed on a machine. If the data volume is large, you can consider distributed processing. If you have experience in this area in the future, you will share it in time. 1, the ftp tool used by the program, apache commons-net-ftp-2.0.jar 2, tens of millions of ftp core key

Anonymous inner class----------------------------------------------------The inheritance of abstract classes, method overrides, and the creation of objects are combined to writeBtn.addlisener (New Abstractlisener () {Override of Method});Abnormal—------------------------------------1.Throwable has two subclasses, exception and error2.throw keyword can throw exception objectThe 3.throws keyword throws an exception declaration at the time of the method definition4.RuntimeException exceptions are n

Voiddbclick () {listener.ondbclick (); }}classadapterdemo{publicstaticvoid main (String[]args) {mylistenerml= newmylistener (); buttonb=new button (); b.addlistener (ML); b.click (); nBsp;b.dbclick (); }} [Job 2]------------------------------------Explain what polymorphism is.Why can functions be overwritten, and properties cannot be overwritten?For:Definition: The various forms of existence of a certain class of things.For inherited classes, use the parent class type to refer to the object of

(); } Public Cashreturn(DoubleMoneycondition,DoubleMoneyreturn) {Super(); This. moneycondition = moneycondition; This. Moneyreturn = Moneyreturn; } Public Double getmoneycondition() {returnMoneycondition; } Public void setmoneycondition(DoubleMoneycondition) { This. moneycondition = moneycondition; } Public Double Getmoneyreturn() {returnMoneyreturn; } Public void Setmoneyreturn(DoubleMoneyreturn) { This. Moneyreturn = Moneyreturn; }@Override Public Double Acceptcash(DoubleMoney) {if(money>=

4th Day-------------------------Transpose of the array:1, the precondition is that the two-dimensional array is a square, that is, n rows n columns./*** Transpose of two-dimensional data*/public class Arraytransdemo {public static void Main (String [] args) {String[][] arr = {{"A", "B", "C", "D", "E"},{"F", "G", "H", "I", "J"},{"K", "L", "M", "N", "O"},{"P", "Q", "R", "s", "T"},{"U", "V" "," W "," X "," Y "}};Print (arr);SYSTEM.OUT.PRINTLN ("------------------------------after transpose");Trans

;} publicvoidsetcolor (Stringcolor) { this.color=color;}publicstringgetcolor () { returncolor;}public voidsetage (intage) {this.age=age; }publicintgetage () { returnage;}publicvoidcry () {system.out.println ("barking ~~~"); }9. Describe the heap area, stack area, when overflow, how to solve.For:Heap Area: Stores objects and member variables.Stack area: Stores local variables and method memory.Overflow: An object that consumes large memory resources, or overflows when it is recursive.Workaround:J

Question 1125: The big integer factor C ++/JavaDescription: The positive integer k is known to be 2 Input: Number of digits of some non-negative integers c and c Each row has one c and is aborted when c =-1.(Do not calculate-1 !) Output: Each result of c occupies one row.1) if there is a k that satisfies c % k = 0, output all such k, separated by spaces in the middle, and there is no space behind the last k.2) if no such k is available, "none" is out