I'm having trouble getting my head around algorithm analysis. I seem to be okay identifying linear or squared algorithms but am totally lost with nlogn or logn algorithms, these seem to stem mainly from while loops? Heres an example I was looking at:
Algorithm Calculate(A,n)
Input: Array A of size n
t?0
for i?0 to n-1 do
if A[i] is an odd…
I want to implement this algorithm here: http://bellard.org/pi/pi_n2/pi_n2.html but I don't understand a good part of it, and would like to understand. Could someone please put it in understandable words, psudocode, or C. Thanks.
I know that jQuery, for example, can do animation of sorts. I also know that at the very core of the animation, there must me some sort of loop doing the animation. What is an example of such a loop?
A complete answer should ideally answer the following questions:
What is a basic syntax for an effective animation recursion that can animate a…
I'm writing an interface spec in MS Word and it would be great if there were some sort of template or pluggin for Word (2003 here) that would make it all look a bit prettier.
(I'm realizing how spoiled I am with even the archaic VB6 IDE).
Its popular to render procedural content inside the GPU e.g. in the demoscene (drawing a single quad to fill the screen and letting the GPU compute the pixels).
Ray marching is popular:
This means the GPU is executing some unknown number of loop iterations per pixel (although you can have an upper bound like maxIterations).
How does having a…
Doing unit testing for the first time at a large scale, I find myself writing a lot of repetitive unit tests for my business logic. Sure, to create complete test suites I need to test all possibilities but readability feels compromised doing what I do - as shown in the psuedocode below.
How would a well written, readable test suit look like?
…
Can anyone point me to a code example (java preferably) or psuedocode that uses recursion to return a subtree that contains all nodes with keys between fromKey and toKey.
So if I was to call Tree.subtree(5,10) it should return all nodes in the BST that have keys between 5 and 10 inclusive - but I can't use loops or helper methods...only…
I'm trying to append to a char[] array that contains blank spaces on the end. The char array for example contains the characters 'aaa'. When I append the first time the method functions properly and outputs 'aaabbb'. The initial capacity of the array is set to 80 or multiples of 80. The second time I try and append my output looks…
I wrote a small test car driving multiplayer game with Box2D using TCP server-client communcations.
I ran 1 instance of server.exe and 2 instance of client.exe on the same machine that I code and compile the executables. I type inputs (WASD for a simple car movement) into one of the 2 clients and I can get both clients to update…
In a game I'm working on, there's a class responsible for collision detection. It's method detectCollisions(List<Entity> entities) is called from the main gameloop.
The code to update the entities (i.e. where the entities 'act': update their positions, invoke AI, etc) is in a different class, in the method…
Consider a simple game with 4 kinds of entities: Robots, Dogs, Missiles, Walls.
Here's a simple collision-detection mechanism in psuedocode: (I know, O(n^2). Irrelevant for this question).
for(Entity entityA in entities){
for(Entity entityB in entities){
if(collision(entityA, entityB)){
…
(I'm doing this in AS3, but I'm sure the answer could be given in psuedocode)
Basically, I have a XML file similar to:
<Main>
<Event>
<Name>Blah</Name>
<Event>
Name>Blah2</Name>
<Event>
<Name>Blah3</Name>
...
</Event>
…
Was wondering if anyone could help me with creating a pseudocode for how to go about dividing n-bit binary integers. Here is what I'm thinking could possibly work right now, could someone correct this if I'm wrong:
divide (x,y)
if x=0: return (0,0) //(quotient, remainder)
(q,r) =…
I'm seeing some code like this in our code base, and want to refactor it:
(Typescript psuedocode follows):
class EntityManager{
private findEntityForServerObject(entityType:string, serverObject:any):IEntity {
var existingEntity:IEntity = null;
switch(entityType) {
case…
Ok, I'm a bit of a n00b when it comes to JS (I'm not the greatest programmer) so please be gentle - specially if my questions been asked already somewhere and I'm too stupid to find the right answer. Self deprecation out of the way, let's get to the question.
Problem
There is a site me…
I've got a listview on a control. Each row comprises a checkbox and another listview.
The outer listview is bound to a property on the control (via a method call, can't set a property as a SelectMethod on an ObjectDataSource it would appear) which is lazy loaded suchly:
Public…
Hello, So I want to create a JDBC connection to MySQL server that is installed on my pc, here are the steps,
I installed MySQL with the username and password "root", downloaded mysql-connector-java and from theere I coped the JAR "mysql-connector-java-5.1.12-bin" to…
Does an SQL Server "join" preserve any kind of row order consistently (i.e. that of the left table or that of the right table)?
Psuedocode:
create table #p (personid bigint);
foreach (id in personid_list)
insert into #p (personid) values (id)
select id from…
Hey all,
I'm currently running into a situation that I guess would be called deadlock.
I'm implementing a message service that calls various object methods.. it's quite similar to observer pattern..
Here's whats going on:
Dispatcher.php
Dispatcher.php
<?…
Hey all,
I'm currently running into an endless recursion situation.
I'm implementing a message service that calls various object methods.. it's quite similar to observer pattern..
Here's whats going on:
Dispatcher.php
class Dispatcher {
...
public…
Umm, ok, after sending some data to the server, noting this particular part:
"Accept-Encoding: gzip,deflate\r\n"
I am getting the following response:
HTTP/1.1 200 OK
Server: nginx
Date: Fri, 09 Apr 2010 23:25:27 GMT
Content-Type: text/html;…
I have a Windows Forms UI running on a thread, Thread1. I have another thread, Thread2, that gets tons of data via external events that needs to update the Windows UI. (It actually updates multiple UI threads.)
I have a third thread, Thread3,…
(Summary: My users need to be able to edit the structure of their dynamically generated web pages without being able to do any damage.)
Greetings, ladies and gentlemen. I am currently working on a service where customers from a specific…
Consider the bellow code. This code is supposed to be processing data at a fixed rate, in one second batches, It is part of an overal system and can't take up too much time.
When running over 100 lots of 1 seconds worth of data the…