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Rectifying Java recursive code for Backtracking Graph Coloring Algorithm

stackoverflow.com - 2012-03-18 19:04:36 - Similar - Report/Block

The problem is to use Recursion to color a given graph with minimum number of colors such that no adjacent vertices can have the same color.The function signature is static String exhaustive(int color, String prefix) where color is the number of colors being used in that iteration and prefix is string consisting of the color for each node...

Java Graph library which supports generic graph formats such as GraphML or GraphVIZ etc

stackoverflow.com - 2012-04-23 12:20:14 - Similar - Report/Block

I am using Antlr (with Java) to parse some programs. I need to construct a graph out of parsed information. Later I want to run graph-algorithms on it which are already written in C++. Right now I am using xml to dump the parsed information into a graph like data-structure. Then I have to parse this XML using c/c++ to make a native graph.

[Løst] Hjelp med recursive backtracking

diskusjon.no - 2013-04-07 16:36:54 - Similar - Report/Block

Hei, har nå i oppgave å løse en sudoku via brute-force. Så vidt jeg vet, er den beste måten å bruke recursive backtracking, siden du må ha muligheten til å kunne bevege deg bakover om du finner ikke-løsbare ruter. Har prøvd litt på dette nå, og får det ca. til å funke, og det ser slik ut hittil: Med rad-og kolonnenummer: Spoiler http://pa...

Help with Graph in Java

java-forums.org - 2013-05-31 17:42:05 - Similar - Report/Block

Hi, I am new to java. I wana create a java program in Eclipse running on the web that can plot graph for example with the following data: y-axis: 01 02 04 09 10 20 25 x-axis: val1 val2 val3 val4 val5 val6 val7 On the y axsis i would like to plot a value of 09 with a line going accross the x axsis to see values that are above 9, i have s...

Clojure: Can only recur from tail position

stackoverflow.com - 2012-06-02 18:47:08 - Similar - Report/Block

I'm trying to recursively reverse a list, but am getting Can only recur from tail position upon run. What does this mean precisely and how can my code be improved so it works? (defn recursive-reverse [coll] (loop [coll coll] (if (< (count coll) 2) '(coll) (conj (first coll) (recur (rest coll))) ))) Output for Oscar's solution. It...

Can 15 puzzle really be solved by backtracking?

stackoverflow.com - 2013-06-11 15:17:27 - Similar - Report/Block

Recently I was reading a book called "Programming Challenges". It is basically a book about algorithms. One of the chapters of the book is devoted to a backtracking technique and at the end of the chapter there are example problems from the UVA Online Judge. One of the problems is the famous 15 puzzle Even though this problem is introduce...

graph traversal(to traverse all the possible nodes of graphs and p...it)

java-forums.org - 2013-06-05 06:23:16 - Similar - Report/Block

Hi...Can anybody help me regarding this problems,I want java code for graph traversal which is used to find all the paths between 2 nodes and print it for eg: / | \ / | \ a-d \ | / \ | / If the source is a, and the destination is d, then possible paths should be: a - d a - b - d a - c - d a - b - c - d a - c - b - d...

LD_PRELOAD variable in JNI code

stackoverflow.com - 2012-04-19 10:17:14 - Similar - Report/Block

My java code calls via JNI some C++ code from a shared library (eg libtest.so). The code is instrumented with some special debugging symbols that exist it libdebug.so. When I call LD_PRELOAD=/usr/lib/libdebug.so java com.test.myMain the execution stops with Exception in thread "main" java.lang.UnsatisfiedLinkError because symbols from lib...

Error: Could not find or load main class

stackoverflow.com - 2011-09-20 13:10:12 - Similar - Report/Block

I am having trouble compiling and running my Java code, intended to allow me to interface Java with a shared object for Vensim, a simulation modeling package. The following code compiles without error: javac -d . -cp ./apache-log4j-1.2.16/log4j-1.2.16.jar:. /vensim.jar SpatialModel.java VensimHelper.java VensimException.java VensimContextR...

Recursive Function with If-Else Statements in Prolog

stackoverflow.com - 2012-04-22 05:04:20 - Similar - Report/Block

I'm trying to write a recursive function in prolog that computes R = (2*X + Y)^N without using the exponent operator. I've written a recursive function with if-else statements and I get the error: ") or operator expected." It looks to me like I have the syntax correct, but I must be missing something. The code is below. expbar(R, X, Y, N)...

Automatically convert Scala code to Java code

stackoverflow.com - 2012-03-27 00:28:25 - Similar - Report/Block

I have an app written in Scala and some of my team members want a Java version of it. It is a demo app to use another API written in Scala, and they want a Java version of the app to be able to use the API from Java. However, the app is somewhat large and I don't want to manually rewerite in Java (and they don't want to learn Scala). Is t...

Merging array in recursive function using php?

stackoverflow.com - 2012-03-18 16:14:46 - Similar - Report/Block

After one week searching and converting many algorithm from other language into php to make an array that contain "combination k from n". I'm stuck. please help me. This is my code (using php): function comb($item,$arr,$out, $start, $n, $k, $maxk) { if ($k > $maxk) { foreach($arr as $ar){ echo "$ar"; echo "...

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How can I put axis on a .png file in java?

stackoverflow.com - 2012-03-23 18:06:32 - Similar - Report/Block

I have chart.png with data in it that I would like to put a simple X - Y axis on with some labeling. I also would like to try not to use any external software that doesn't come with java. I'm allowed to use jfreechart but if there is a way to make it look nice, while just using some plan java code, that would be better. Does anyone ha...

Graph API iOS picture

stackoverflow.com - 2012-05-06 21:42:30 - Similar - Report/Block

I have a graph api call from my ios application. It looks something like this: [[appDelegate facebook] requestWithGraphPath:[NSString stringWithFormat:@"%i/picture", [[userData objectForKey:@"id"] intValue] andDelegate:self]; (might be some typos) But in the request did load when i nslog the result, it is (null) . Graph API says that you...

Recursive solution to Sudoku generator

stackoverflow.com - 2012-03-31 21:55:29 - Similar - Report/Block

I'm trying to code an algorithm that creates a legal Sudoku board in either Java or Javascript. Neither work, and I'm not entirely sure why. Java: http://pastebin.com/FeBbE19R Javascript: http://pastebin.com/KGpqCnxL Essentially, the problem in both programs is that either x or y is getting incremented more than it should (skipping the s...

Algorithm to map graph into another structure

stackoverflow.com - 2013-03-26 15:14:42 - Similar - Report/Block

I am trying to map a graph structure into the structure I show below. Here is an example of the type of graph I need to map where arrows always have a direction from left to right. Here is the result I am looking for. The goal is to generate an XML like this: Is there any algorithm I can use? I don't think it's relevant but I am parsing J...

very wierd! eclipse does not find java on my computer?

java-forums.org - 2012-07-22 05:57:18 - Similar - Report/Block

Hello I am very new and I have a problem that has been bothering me all day today. I have been working on a ROS (robotic OS) and I am using java for part of it. The java code itself works fine, but I just updated my java to the latest java and my whole entire eclipse can not find java... even programs like minecraft do not work. I did che...

how to import matplotlib in python

stackoverflow.com - 2012-08-05 12:04:13 - Similar - Report/Block

I am new to python and I am working on a graph problem and I want to draw this graph to have a better understanding of it. I learnt that matplotlib module is supposed to be imported for this but I dont know how to add it to the project.(I am a java developer and It is pretty much like adding jar to your classpath) Can anyone help me with...

Launching CYGWIN-built executable from Java on Windows 7 fails with "error while loading shared libraries: ?: No such file or directory"

stackoverflow.com - 2012-04-10 18:32:00 - Similar - Report/Block

The code in question has worked in more or less the exact same configuration on earlier releases of Windows, however, it is not known to have run on Windows 7 YET! That's what I need to solve now. Briefly, some C code performs some configuration and security checks before launching a java program, passing some data that would be neigh-int...

PDF/A1A (XMP Tagged PDF) with XML datasource (JaserReports/iText)

java-forums.org - 2012-08-14 09:40:53 - Similar - Report/Block

Hello, I'm trying to run the code underneath, but it fails with the error: Code: Exception in thread "main" java.lang.ClassCastException: com.itextpdf.text.Document cannot be cast to org.w3c.dom.Document Here's the actual code. It seems that I'm combining two different Document classes, but I don't know how to solve it. If my co...

Using Graph# for drawing graph

stackoverflow.com - 2012-04-09 00:20:11 - Similar - Report/Block

I want to draw a graph like the one i've attached here: I dont wanna re invent the wheel and start to draw circles and so on, so i googled for libraries and what i found is Graph#. Unfortunately there is no documentation/tutorial, so i'm a little confused that is this what i need or not! What I need is to be able to choose colors for vert...

How to compile java code from a .net application?

stackoverflow.com - 2012-06-27 12:06:46 - Similar - Report/Block

I am creating a source code editor for Java using C# in .NET 4. I need to know how I can interact with the jre to compile the java code on my application editor interface from .net. I wish to display the user any errors on the code as well. Any ideas on how to accomplish this will be greatly appreciated.

Platform independent socket communication between Java and C++

java-forums.org - 2013-06-12 00:34:38 - Similar - Report/Block

Hello forum, I would like to build a simple Java server that can receive TCP messages from different endpoints that use Java, C++ or any other language. As far as I know the following message properties are critical: byte order, encoding and number representation. However, I don't know which Java Streams and Writers write Java specific co...

How to change iReport font as parameter

java-forums.org - 2013-03-27 09:17:00 - Similar - Report/Block

i have application that generate report with custom font style, like font family, color,size and style(bold,italic,underline). And i use all font-family from Windows System. I try to use parameter in .jrxml file. Like this : Code: And in the text : Code: ... ... When i preview in iReport, it log error : Code: Error filling print... Font '...

C - Manage call stack in recursive methods

stackoverflow.com - 2012-04-04 01:30:00 - Similar - Report/Block

I am new here and I have a problem that's bugging me.I am a beginner so please don't laugh at me. I want to make recursive quicksort work on a large number of elements,let's say 100000.I know this will cause the stack to overflow.I have been googling for the past few days trying to find a way to manage the call stack.I can't really find a...

How can you emulate recursion with a stack?

stackoverflow.com - 2012-03-22 23:45:31 - Similar - Report/Block

I've heard that any recursive algorithm can always be expressed by using a stack. Recently, I've been working on programs in an environment with a prohibitively small available call stack size. I need to do some deep recursion, so I was wondering how you could rework any recursive algorithm to use an explicit stack. For example, let's sup...

How to plot graph in java mathematical equations

java-forums.org - 2013-06-05 03:57:31 - Similar - Report/Block

I'm confused in creating graphs here in java. My professor is not teaching anything here. And we have to do it ourselves. I hope someone could help me y = x^2 , y = sin x and y = mx + b ; m = 1,2 and 3 , b = 0, 1 and 2 x ranges from 0 to 100 at increments of 1 please help...

Using continuation / CPS to implement tail-recursive MergeSort in OCaml

stackoverflow.com - 2013-02-25 16:41:58 - Similar - Report/Block

I am trying to implement a tail-recursive MergeSort in OCaml Since Mergesort naturally is not tail-recursive, so I am using CPS to implement it. Also my implementation is inspired by Tail-recursive merge sort in OCaml Below is my code let merge compare_fun l1 l2 = let rec mg l1 l2 acc = match l1, l2 with | ([], []) -> List.rev acc...

VBA code to switch graph type at click of a button

excelforum.com - 2013-05-15 10:16:33 - Similar - Report/Block

I want to have a button on my pivot table graph to switch it from a bar chart to a line graph at the click of a command button. Is this possible and if so how? Thanks...

Graph visualization code in javascript?

stackoverflow.com - 2008-08-10 04:07:52 - Similar - Report/Block

Hi. I have a data structure that represents a directed graph, and I want to render that dynamically on an HTML page. Does anyone know of any javascript code that can do a reasonable job with graph layout? These graphs will usually be just a few nodes, maybe ten at the very upper end, so my guess is that performance isn't going to be a big...

Convert C# Using Statement To Java Online Using Codeporting C# To Java App

dreamteammoney.com - 2012-08-07 08:12:19 - Similar - Report/Block

C# use using Statement to define its scope outside of which an object or objects are disposed. But there is no equivalent syntax statement in Java. CodePorting C#2Java engine intelligently translates the C# code and handle this situation by producing try/catch block in java code. This Technique converts C# code to java code with same...

Need help regarding EjB

java-forums.org - 2012-09-14 11:39:42 - Similar - Report/Block

Hello guys. i Am new to EjB. i Have to do Library Operations in Ejb. i Have all the code {RemoteInterface, HomeInterface, eTc.} required to do the coding, but dont know how to implement it. i Know to how to code in JAva, but EjB has java but its execution is very much different. i Also installed NetBeans IDE, but still cant figure out how...

I added an array and now the program provides no output, please help

java-forums.org - 2013-03-12 06:53:38 - Similar - Report/Block

Hello, I am new to Java and creating a program that must do the following; • The application will now compare the total annual compensation of at least two salespersons. • It will calculate the additional amount of sales that each salesperson must achieve to match or exceed the higher of the two earners. • The application should ask for t...

Java 7 update 15 issue

sevenforums.com - 2013-02-26 18:38:20 - Similar - Report/Block

Hi, today i updated java to the latest version and although it is detected on my laptop through the java test page, when i try to launch the java control panel or java.exe, command prompt opens with loads of code then closes quickly. I uninstalled then reinstalled yet same issue. Is this something to fret about or should i investigate fur...

Java regex matcher.find fails occasionally

stackoverflow.com - 2012-05-31 13:15:10 - Similar - Report/Block

I have regexp which parses all names of used freemarker macros in template (for example from <@macroName /> I need only macroName ). Templates are usually quite large (round 30 thousand characters). Java code with regex looks like: Pattern pattern = Pattern.compile(".*?<@(.*?)[ /].*?", Pattern.DOTALL | Pattern.UNIX_LINES); Matc...

Can't run Java example for Selenium / WebDriver

stackoverflow.com - 2012-04-07 20:29:58 - Similar - Report/Block

Having a problem getting going with Selenium on Java. I'm trying to follow the example on this page: http://code.google.com/p/selenium/wiki/G ettingStarted I'm typing this: $ javac -cp . -cp ~/Downloads/selenium-2.20.0/selenium-jav a-2.20.0-srcs.jar -cp ~/Downloads/selenium-2.20.0/selenium-jav a-2.20.0.jar -g Example.java And getting this:...

Sending request to HttpUrlConnection: Status 405 error method not allowed

java-forums.org - 2013-06-11 10:53:03 - Similar - Report/Block

Hi , My web application is deployed on my machine . I can access thru Url and access the API's . But when I am trying to access the API thru Java code,HTTP 405 Status Error: Method not Allowed comes up. The request will be in this form: abc XYZ url : http://127.0.1.11:5555/IDXWeb/TestServic e.htm My java code is like this : package gepoc...

Compilation error with external Jar

stackoverflow.com - 2012-05-29 01:23:35 - Similar - Report/Block

I am trying to command line compile my code and I cannot get it to run properly. My project was in eclipse and i could specify the location of a jar file to include but the command line is another issue. All .java and the .jar file are in the same director. I can compile with javac -classpath opencsv-2.3.jar *.java I get the following exc...

Import java files

java-forums.org - 2013-06-05 09:01:04 - Similar - Report/Block

Hi , I'm doing my first steps in java so please be gentle ... enclosed a part of a java program . Q -1 - From where those files are imported ? ( what is their path ? ) Q -2 - Does those files are related to the java version that I have on my PC ? Code: package SensorMonitor; import java.io.*; import java.net.*; import javax.net.ssl.*; imp...

BlackBerry Java SDK questions.

java-forums.org - 2013-05-19 23:08:36 - Similar - Report/Block

Hello, I am wondering, since I use linux, and there is no BB Java SDK support ( besides some wild actions ), is Java for BB ME or it`s like Android Java ( just syntax and some core imports )? I`ve installed the NDK, which is C++ but I hate C++ :( So, if there is somebody with expirience in developing apps for BB with Java SDK on LINUX, pl...




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