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  • In an AVL tree, at what condition the balancing is to be done? proper code in c languge

    - by bachchan
    Binary search follows Divide and Conquer method where as linear Search doesn't follw.The time complexity of Binary Search in O(log n) but incase of linear search the time complexity is O(n). Thats way Binary search is having bettr prior than linear search. But it is true when the list of items is large incase of smaller list linear is best(i.e.- it is only when the Best Case concern)

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  • Anything wrong with my cURL code (http status of 0)?

    - by Ilya
    Consistently getting a status of 0 even though if I copy and paste the url sent into my browser, I get a json object right back <?php $mainUrl = "https://api.xxxx.com/?"; $co = "xxxxx"; $pa = "xxxx"; $par = "xxxx"; $part= "xxxx"; $partn = "xxxx"; $us= "xxx"; $fields_string; $fields = array( 'co'=>urlencode($co), 'pa'=>urlencode($pa), 'par'=>urlencode($par), 'part'=>urlencode($part), 'partn'=>urlencode($partn), 'us'=>urlencode($us) ); foreach($fields as $key=>$value) { $fields_string .= $key . '=' . $value . '&' ;} $fields_string = rtrim($fields_string, "&"); $fields_string = "?" . $fields_string; $url = "https://api.xxxxx.com/" . $fields_string; $request = $url; $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, $url); curl_setopt($ch, CURLOPT_RETURNTRANSFER,1); curl_setopt($ch, CURLOPT_TIMEOUT,'3'); $content = trim(curl_exec($ch)); $http_status = curl_getinfo($ch, CURLINFO_HTTP_CODE); curl_close($ch); print $url; print $http_status; print $content; ?>

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  • Writing the code iby dividing it into more files.

    - by srikanth rongali
    My problem is, I need a background image, a sprite(with animation) on left edge, another sprite(with animation) at other edge, a number count animation 1-2-3 at middle. I got all these when I wrote all in same file.(like [self addChild:label], [self addChild:sprite].., But in this it needs touch enables for both sprites separately, and touchDisabled to the remaining screen. So thought of writing in different files. But now it is not working. I kept one sprite, background image, numbercount in one file and another spritr in other file. Either I am getting the second sprite or the (sprite+background+numberCount) is displayed. This is my problem. plz give me solution. Thank You

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  • Downloading a web page and all of its resource files in Python

    - by Mark
    I want to be able to download a page and all of its associated resources (images, style sheets, script files, etc) using Python. I am (somewhat) familiar with urllib2 and know how to download individual urls, but before I go and start hacking at BeautifulSoup + urllib2 I wanted to be sure that there wasn't already a Python equivalent to "wget --page-requisites http://www.google.com". Specifically I am interested in gathering statistical information about how long it takes to download an entire web page, including all resources. Thanks Mark

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  • This code is working properly in Dev C++ .But on Linux platform it is giving problem with the moveme

    - by srinija
    #include<stdio.h> #include<GL/glut.h> #include<stdlib.h> GLfloat v[3][24]={{100.0,300.0,350.0,50.0,100.0,120.0,120.0,100.0,260.0,280.0, 280.0,260.0,140.0,160.0,160.0,140.0,180.0,200.0,200.0,180.0, 220.0,240.0,240.0,220.0},{100.0,100.0,200.0,200.0,160.0, 160.0,180.0,180.0,160.0,160.0,180.0,180.0,160.0,160.0,180.0, 180.0,160.0,160.0,180.0,180.0,160.0,160.0,180.0,180.0}, {1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0, 1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0}}; GLfloat v1[3][16]={{50.0,350.0,350.0,50.0,100.0,300.0,300.0,100.0,125.0,175.0, 175.0,125.0,225.0,275.0,275.0,225.0},{200.0,200.0,210.0, 210.0,210.0,210.0,240.0,240.0,240.0,240.0,310.0,310.0,240.0, 240.0,310.0,310.0},{1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0, 1.0,1.0,1.0,1.0,1.0,1.0}}; GLfloat colors[4][3]={{0.0,0.0,1.0},{0.9961,0.9961,0.65625},{1.0,0.0,1.0}, {1.0,.0,1.0}}; static float q,w,e; static float fq,fw,fe; static GLfloat wa=0,wb=0,wc=0,ba,bb,bc; int flag; void myinit(void) { glClearColor(0.506,.7,1,0.0); glPointSize(2.0); glLoadIdentity(); glOrtho(0.0,499.0,0.0,499.0,-300.0,300.0); } void draw_top_boxes(GLint i,GLint j) { glColor3f(1.0,0.0,0.0); glBegin(GL_POLYGON); glColor3fv(colors[j]); // to draw the boat glVertex2f(v1[0][i+0],v1[1][i+0]); glColor3fv(colors[j+1]); glVertex2f(v1[0][i+1],v1[1][i+1]); glColor3fv(colors[j+2]); glVertex2f(v1[0][i+2],v1[1][i+2]); glColor3fv(colors[j+3]); glVertex2f(v1[0][i+3],v1[1][i+3]); glEnd(); } void draw_polygon(GLint i) { glBegin(GL_POLYGON); // to draw the boat glColor3f(0.0,0.0,0.0); glColor3fv(colors[0]); glVertex2f(v[0][i+0],v[1][i+0]); glColor3fv(colors[1]); glVertex2f(v[0][i+1],v[1][i+1]); glColor3fv(colors[2]); glVertex2f(v[0][i+2],v[1][i+2]); glColor3fv(colors[3]); glVertex2f(v[0][i+3],v[1][i+3]); glEnd(); } void draw_boat() { draw_polygon(0); draw_polygon(4); draw_polygon(8); draw_polygon(12); draw_polygon(16); draw_polygon(20); draw_top_boxes(0,0); draw_top_boxes(4,0); draw_top_boxes(8,0); draw_top_boxes(12,0); glFlush(); glPopMatrix(); glPopMatrix(); } void draw_water() { GLfloat i; GLfloat x=0,y=103,j=0; GLfloat k; glPushMatrix(); glTranslatef(wa,wb,wc); glPushMatrix(); glColor3f(0,0,1); for(k=y;k>0;k-=6) { for(i=1;i<30;i++) { glBegin(GL_LINES); glVertex2f(j,k); glVertex2f(j+10,k); glEnd(); j=j+20; } j=0; } glPopMatrix(); glPopMatrix(); } void draw_fishes() { glPushMatrix(); glTranslatef(fq,12.0,fe); glPushMatrix(); glColor3f(.99609375,0.2578125,0.2578125); glBegin(GL_TRIANGLES); glVertex2f(100,80); glVertex2f(100,60); glVertex2f(85,70); glEnd(); glColor3f(.99609375,0.2578125,0.2578125); glBegin(GL_TRIANGLES); glVertex2f(100,70); glVertex2f(110,75); glVertex2f(110,65); glEnd(); glColor3f(0,0,0); glBegin(GL_POINTS); glVertex2f(90,71); glEnd(); glColor3f(.99609375,0.2578125,0.2578125); glBegin(GL_TRIANGLES); glVertex2f(200,80); glVertex2f(200,60); glVertex2f(185,70); glEnd(); glColor3f(.99609375,0.2578125,0.2578125); glBegin(GL_TRIANGLES); glVertex2f(200,70); glVertex2f(210,75); glVertex2f(210,65); glEnd(); glColor3f(0,0,0); glBegin(GL_POINTS); glVertex2f(190,71); glEnd(); glPopMatrix(); glPopMatrix(); glFlush(); } void draw_cloud() { GLfloat m=100,n=400,o=10; for(int i=0;i<7;i++) { glPushMatrix(); glColor3f(1.0,1.0,1.0); if(i==1) glTranslated(125,415,10); else if(i==3||i==5) glTranslated(m,n+5,o); else glTranslated(m,n,o); glutSolidSphere(20.0,5000,150); glPopMatrix(); m+=10; } } void draw_square() { glColor3f(0,0.5,0.996); glBegin(GL_POLYGON); glVertex2f(0,0); glVertex2f(1000,0); glVertex2f(0,300); glVertex2f(1000,300); glEnd(); glFlush(); } void draw_brotate() { glPushMatrix(); glColor3f(0.96,0.5,0.25); //to draw body of the bird glTranslated(300,400,10); glScalef(3,1,1); glutSolidSphere(6,50000,15); glPopMatrix(); glPushMatrix(); glTranslated(323,400,10); glutSolidSphere(5,50000,15); glPopMatrix(); glColor3f(0,0,0); glBegin(GL_POINTS); glVertex2f(325,401); glEnd(); glColor3f(0.96,0.5,0.25); //to draw wings glBegin(GL_LINES); glVertex2f(294,394); glVertex2f(286,389); glEnd(); glBegin(GL_LINES); glVertex2f(286,389); glVertex2f(295,391); glEnd(); glBegin(GL_LINES); glVertex2f(295,391); glVertex2f(285,385); glEnd(); glBegin(GL_LINES); glVertex2f(285,385); glVertex2f(309,395); glEnd(); glBegin(GL_LINES); glVertex2f(294,406); glVertex2f(286,411); glEnd(); glBegin(GL_LINES); glVertex2f(286,411); glVertex2f(295,409); glEnd(); glBegin(GL_LINES); glVertex2f(295,409); glVertex2f(285,415); glEnd(); glBegin(GL_LINES); glVertex2f(285,415); glVertex2f(309,406); glEnd(); glColor3f(0.96,0.5,0.25); } void draw_bird() { GLfloat x=200,y=400,z=10; draw_brotate(); glBegin(GL_LINES); //draw legs of the bird glVertex2f(285,402); glVertex2f(275,402); glEnd(); glBegin(GL_LINES); glVertex2f(285,398); glVertex2f(275,398); glEnd(); glBegin(GL_LINES); glVertex2f(275,402); glVertex2f(270,405); glEnd(); glBegin(GL_LINES); glVertex2f(275,402); glVertex2f(270,398); glEnd(); glBegin(GL_LINES); glVertex2f(275,398); glVertex2f(273,400); glEnd(); glBegin(GL_LINES); glVertex2f(275,398); glVertex2f(270,395); glEnd(); glBegin(GL_LINES); glVertex2f(323,405); glVertex2f(323,407); glEnd(); glPushMatrix(); glTranslatef(323,409,10); glutSolidSphere(2,200,20); glPopMatrix(); glBegin(GL_TRIANGLES); glVertex2f(328,400); glVertex2f(331,397); glVertex2f(327,398.5); glEnd(); glFlush(); } void drawstars() { glColor3f(1.0,1.0,1.0); glBegin(GL_POINTS); glVertex3f(300.0,400.0,10.0); glVertex3f(200,400.0,10.0); glVertex3f(150,450.0,10.0); glVertex3f(100,470.0,10.0); glVertex3f(50,450.0,10.0); glVertex3f(50,350.0,10.0); glVertex3f(90,365.0,10.0); glVertex3f(350,450.0,10.0); glVertex3f(275,470.0,10.0); glVertex3f(280,430.0,10.0); glVertex3f(250,400.0,10.0); glVertex3f(450,450.0,10.0); glVertex3f(430,430.0,10.0); glVertex3f(430,470.0,10.0); glVertex3f(300,450.0,10.0); glVertex3f(265,380.0,10.0); glVertex3f(235,450.0,10.0); glEnd(); } void draw_all() { glClear(GL_COLOR_BUFFER_BIT); if(flag==0) { glDisable(GL_LIGHTING); //immp one draw_square(); draw_cloud(); glClearColor(0.506,.7,1,0.0); glTranslatef(q,w,e); glPushMatrix(); glColor3f(1.0,0.0,0.0); draw_boat(); draw_fishes(); glPushMatrix(); glColor3f(1.0,1.0,0.0); glTranslated(400,400,10); glutSolidSphere(20.0,5000,150); glPopMatrix(); } if(flag==1) { glDisable(GL_LIGHTING); //imp one draw_square(); draw_cloud(); glClearColor(0.9960,0.7070,0.3164,0.0); glTranslatef(q,w,e); glPushMatrix(); glColor3f(1.0,0.0,0.0); draw_boat(); draw_fishes(); glPushMatrix(); glColor3f(1.0,1.0,0.0); glTranslated(400,400,10); glutSolidSphere(20.0,500,100); glPopMatrix(); } if(flag==2) { // just try and change values in these arrays, specially the position array drawstars(); glEnable(GL_LIGHTING); glEnable(GL_LIGHT0); // GLfloat emission[]={0.1,0.1,0.1,0.0}; GLfloat diffuse[] = { 0.40, 0.40,0.40, 1.0 }; GLfloat ambiance[] = { 0.5, 0.5,0.5, 1.0 }; GLfloat specular[] = { 1.3, 1.3,.3, 1.0 }; GLfloat intensity[]={500.0}; GLfloat position[] = { 10,30,-30,1.0 }; glLightfv (GL_LIGHT0, GL_POSITION, position); glLightfv (GL_LIGHT0, GL_DIFFUSE,diffuse); glLightfv (GL_LIGHT0, GL_AMBIENT,ambiance); glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER,GL_TRUE); glLightfv (GL_LIGHT0, GL_SPECULAR,specular); glLightfv (GL_LIGHT0, GL_INTENSITY,intensity); glColor3f(0,0.5,0.996); glBegin(GL_POLYGON); glVertex2f(0,0); glVertex2f(1000,0); glVertex2f(0,150); glVertex2f(1000,150); glEnd(); glTranslatef(q,w,e); glPushMatrix(); glColor3f(1.0,0.0,0.0); draw_boat(); draw_fishes(); glDisable(GL_LIGHTING); glDisable(GL_LIGHT0); draw_cloud(); glClearColor(0.0,0.0,0.0,0.0); glPushMatrix(); glColor3f(1.0,1.0,1.0); glTranslated(400,400,10); glutSolidSphere(20.0,500,100); glPopMatrix(); glColor3f(1.0,1.0,1.0); glBegin(GL_POINTS); glVertex3f(300.0,400.0,10.0); glEnd(); } glPushMatrix(); glTranslatef(ba,bb,bc); glPushMatrix(); draw_bird(); glPopMatrix(); glPopMatrix(); GLfloat i; glPushMatrix(); GLfloat x=0,y=100,j=0; int k; //draw_water(); q+=25; fq-=3.5; if(q>=440.0) //470 q=-390.0; //400 if(fq<=-300) //500 fq=400.0; //400 wa-=1; if(wa<=(-20)) wa=-0.5; ba+=6; if(ba>=500) ba=-400; glFlush(); glutSwapBuffers(); } void display(void) { draw_all(); } void color_menu(int id) { switch(id) { case 1: flag=0;break; case 2: flag=1;break; case 3: flag=2;break; case 4: exit(0); break; } glutPostRedisplay(); } void main_menu(int id) { switch(id) { case 1: break; case 2:exit(0);break; glutPostRedisplay(); } } int main(int argc,char **argv) { int sub_menu; glutInit(&argc,argv); glutInitDisplayMode(GLUT_RGB|GLUT_DOUBLE); glutInitWindowSize(1000,1000); glutInitWindowPosition(0,0); glutCreateWindow("Ship"); sub_menu=glutCreateMenu(color_menu); glutAddMenuEntry("Morning",1); glutAddMenuEntry("Evening",2); glutAddMenuEntry("Night",3); glutAddMenuEntry("Quit",4); glutCreateMenu(main_menu); glutAddSubMenu("View",sub_menu); glutAddMenuEntry("Quit",2); glutAttachMenu(GLUT_RIGHT_BUTTON); glutDisplayFunc(display); glutIdleFunc(display); myinit(); glutMainLoop(); glFlush(); }

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  • Dowloading a bunch of files asynchronous wait till last finished

    - by Casper Broeren
    I'm trying to download a lot of files after downloading a sql statement must insert a record. I'm using System.Net.Client to download each file synchronously, still it could be done asynchronous. There's no relation or dependency between each download. At first I just tried to use WebClient.DownloadFileAsync but that shutted the program down and killed all the download processes/threads. Second I tried to create a wait routine something like this; while (processedFiles < totalFiles) Thread.Sleep(1000) This freezed everything. So could someone tell me which aproach to take to implement this Async?

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  • How to copy one Stream to a byte array with the smallest C# code?

    - by estourodepilha.com
    Until now I am counting 12 LoCs. Could you make it smaller? using (Stream fileStream = File.OpenRead(fileName)) { using (BinaryReader binaryReader = new BinaryReader(fileStream)) { using (MemoryStream memoryStream = new MemoryStream()) { byte[] buffer = new byte[256]; int count; int totalBytes = 0; while ((count = binaryReader.Read(buffer, 0, 256)) > 0) { memoryStream.Write(buffer, 0, count); totalBytes += count; } memoryStream.Position = 0; byte[] transparentPng = new byte[totalBytes]; memoryStream.Read(transparentPng, 0, totalBytes); } } }

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  • Help me convert .NET 1.1 Xml validation code to .NET 2.0 please.

    - by Hamish Grubijan
    It would be fantastic if you could help me rid of these warnings below. I have not been able to find a good document. Since the warnings are concentrated in just the private void ValidateConfiguration( XmlNode section ) section, hopefully this is not terribly hard to answer, if you have encountered this before. Thanks! 'System.Configuration.ConfigurationException.ConfigurationException(string)' is obsolete: 'This class is obsolete, to create a new exception create a System.Configuration!System.Configuration.ConfigurationErrorsException' 'System.Xml.XmlValidatingReader' is obsolete: 'Use XmlReader created by XmlReader.Create() method using appropriate XmlReaderSettings instead. http://go.microsoft.com/fwlink/?linkid=14202' private void ValidateConfiguration( XmlNode section ) { // throw if there is no configuration node. if( null == section ) { throw new ConfigurationException("The configuration section passed within the ... class was null ... there must be a configuration file defined.", section ); } //Validate the document using a schema XmlValidatingReader vreader = new XmlValidatingReader( new XmlTextReader( new StringReader( section.OuterXml ) ) ); // open stream on Resources; the XSD is set as an "embedded resource" so Resource can open a stream on it using (Stream xsdFile = XYZ.GetStream("ABC.xsd")) using (StreamReader sr = new StreamReader(xsdFile)) { vreader.ValidationEventHandler += new ValidationEventHandler(ValidationCallBack); vreader.Schemas.Add(XmlSchema.Read(new XmlTextReader(sr), null)); vreader.ValidationType = ValidationType.Schema; // Validate the document while (vreader.Read()) { } if (!_isValidDocument) { _schemaErrors = _sb.ToString(); throw new ConfigurationException("XML Document not valid"); } } } // Does not cause warnings. private void ValidationCallBack( object sender, ValidationEventArgs args ) { // check what KIND of problem the schema validation reader has; // on FX 1.0, it gives a warning for "<xs:any...skip" sections. Don't worry about those, only set validation false // for real errors if( args.Severity == XmlSeverityType.Error ) { _isValidDocument = false; _sb.Append( args.Message + Environment.NewLine ); } }

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  • How to code which CheckBoxMenuItem is selected in Java?

    - by waterfallrain
    I am trying to add a method which takes the menu selection and passes it to a variable. In this case I would like to take "7" and insert that into the year variable if that is what is selected from teh checkboxmenu. So far have search the internet and sun site with no clear example on how to differentiate the menu items. Any suggestions would be appreciated thanks. cbMenuItem = new JCheckBoxMenuItem("7 year"); cbMenuItem.setMnemonic(KeyEvent.VK_H); cbMenuItem.addItemListener(this); menu.add(cbMenuItem); cbMenuItem = new JCheckBoxMenuItem("15 year"); cbMenuItem.setMnemonic(KeyEvent.VK_S); cbMenuItem.addItemListener(this); menu.add(cbMenuItem);

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  • im writing this code so the user would enter his/her name and followed by his/her marks to get the a

    - by WM
    What if the user wanted to enter his/her grades in the following way: Will 23, 34, 45, 45 how would i get rid of the commas public class StudentAverage { public static void main(String[] args) { int markSum = 0; double average = 0; Scanner input1 = new Scanner(System.in); System.out.print("Enter student record : "); String name = input1.next(); Scanner input2 = new Scanner(input1.nextLine()); int countTotal = 0; while (input2.hasNextInt()) { countTotal++; markSum += input2.nextInt(); } average = markSum / countTotal; // to calculate the total average System.out.print( name + " " + average ); } }

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  • Threadpool with pasistant worker instances

    - by Matt Smokey-waters Holmes
    So basically what im trying to do is queue up tasks in a thread pool to be executed as soon as a worker becomes free, i have found various examples of this but in all cases the examples have been setup to use a new Worker instance for each job, i want persistent workers. Im trying to make a ftp backup tool, i have it working but because of the limitations of a single connection it is slow. What i ideally want to do is have a single connection for scanning directories and building up a file list then four workers to download said files. Here is an example of my worker /** * FTP Worker */ public class Worker implements Runnable { protected FTPClient _ftp; // Connection details protected String _host = ""; protected String _user = ""; protected String _pass = ""; // worker status protected boolean _working = false; public Worker(String host, String user, String pass) { this._host = host; this._user = user; this._pass = pass; } // Check if the worker is in use public boolean inUse() { return this._working; } @Override public void run() { this._ftp = new FTPClient(); this._connect(); } // Download a file from the ftp server public boolean download(String base, String path, String file) { this._working = true; boolean outcome = true; //create directory if not exists File pathDir = new File(base + path); if (!pathDir.exists()) { pathDir.mkdirs(); } //download file try { OutputStream output = new FileOutputStream(base + path + file); this._ftp.retrieveFile(file, output); output.close(); } catch (Exception e) { outcome = false; } finally { this._working = false; return outcome; } } // Connect to the server protected boolean _connect() { try { this._ftp.connect(this._host); this._ftp.login(this._user, this._pass); } catch (Exception e) { return false; } return this._ftp.isConnected(); } // Disconnect from the server protected void _disconnect() { try { this._ftp.disconnect(); } catch (Exception e) { /* do nothing */ } } } and basically i want to be able to call Worker.download(...) for each task in a queue whenever a worker becomes available without having to create a new connection to the ftp server for each download Any help would be appreciated as iv'e never used threads before and I'm going round in circles at the moment

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  • Can Eclipse not hard-code ECLIPSE_HOME when exporting build.xml?

    - by stevex
    I have an Eclipse project that I'm attempting to set up to build both with Eclipse and externally with Ant. It seems like a good way to do this is to have Eclipse generate a build.xml file that I can then use with ant. I'd like to set it up so the build.xml can be regenerated from Eclipse whenever the need arises, which means no hand-editing the build.xml file. But Eclipse writes one entry in there that has a hard-coded path to a directory on my computer, which makes it unsuitable for checking in to a source repository. Specifically it's this entry that's the trouble: <property name="ECLIPSE_HOME" value="D:/Eclipse/Eclipse Galileo (3.5) SR1"/> Is there some way to have Eclipse not output this line, or to make it a relative reference or something that makes sense to check in?

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  • When does code bloat start having a noticeable effect on performance?

    - by Kyle
    I am looking to make a hefty shift towards templates in one of my OpenGL projects, mainly for fun and the learning experience. I plan on watching the size of the executable carefully as I do this, to see just how much of the notorious bloat happens. Currently, the size of my Release build is around 580 KB when I favor speed and 440 KB when I favor size. Yes, it's a tiny project, and in fact even if my executable bloats 10 x its size, it's still going to be 5 MB or so, which hardly seems large by today's standards... or is it? This brings me to my question. Is speed proportional to size, or are there leaps and plateaus at certain thresholds, thresholds which I should be aiming to stay below? (And if so, what are the thresholds specifically?)

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  • How to understand the functional programming code for converting IP string to a number?

    - by zfz
    In a python discusion, I saw a way to convert IP string to a integer in functional progamming way. Here is the Link . The function is implemented in a single line. def ipnumber(ip): return reduce(lambda sum, chunk: sum <<8 | chunk, map(int, ip.split("."))) However, I have few ideas of funcional programming. Could anybody explain the function in detail? I've some knowledg of "map" and "reduce". But I don't konw what "|" and "chunk" mean here? Thanks.

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