Rosetta Code:Village Pump/Suggest a programming task

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When making a request, please place it in the Unsorted section.

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Unsorted

• Reading the file word by word using expect script
• doubly-linked list algorithms, both cursor- and pointer-based implementations
• Open a window and create a simple opengl 3d demonstration
• Retrieve bookmarks from Del.icio.us (Or anything else that demonstrates a HTTPS request with authentication)
• [non-trivial] implement a table-based native code (macro?) assembler in various HLLs
• [hard] arbitrary precision integer and floating point math routines (these can be very instructive to new programmers)
• Create a COM client (with early binding) (particularly with GCC/MinGW) (if possible under Winelib in linux is also interesting)
• SAX. As well as DOM and XPath it would probably be useful to demonstrate parsing a simple XML document with SAX.
• Writing a parser to parse structured text into appropriate native types. (A good demonstration format to parse might be JSON, though it should be about creating a parser rather handling JSON.)
• Super Simple p2p network
• Provide a SOAP server function
• Win interface... C calls to Fortran F90/95 Source Code ... and back...
• Quine (program that prints its own code to stdout)
• Quicksort
• Insertion sort
• Binary search

Recently Completed

If a task has been completed, move the request to this category. Add a link to the task page, and sign (add --~~~~) to the request. Completed tasks more than a week old should be removed from the list.

• Walking a filesystem directory and printing the contents of any file that matches a pattern: Walk_Directory
• Create a trivial DOM document and serialize it to xml: DOM_XML_Serialization
• Regular expression matching
• Simple hash functions and indexing algorithms: Creating_Hash_Structure, Creating_a_Hash_from_2_Arrays
• Perform an XPath query on an XML Document: XML_and_XPath
• Find object(s) in a structure based on matched values of their elements: Select_from_Array
• Create a generic mapping function that applys a callback to elements in a list: Apply_a_callback_to_an_Array
• Sort an array of integers: Sorting, Bubble_Sort
• Pass a function as an argument: Function_as_an_Argument
• Discover the Hostname.
• Basic pointer/reference operations (C now exists on Basic pointer and reference operations)

More requests

I'd like to request the following tasks. I can provide code for Java and C but I'm not familiar with other programming languages in these areas.

• Socket I/O (TCP or UDP sockets)
• Creating a new thread and executing it
  • Doing a thread polling and ensure all thread are done could be a good idea also --Planestraveler 13:39, 1 February 2007 (EST)
    • Three new tasks related to threads have been added:
      • Simple Concurrent Actions deals with thread (or task or co-process) creation
      • Synchronized Concurrency deals with two-way communication between threads as well as correct thread termination --Waldorf 9:07, 9 February 2007 (MST)
      • Metered Concurrency deals with the creation of a counting semaphore to control the number of active threads in an application --Waldorf 14:09 24 february 2007 (MST)
• Iterating over elements in a collection
• Simple DB connection and queries.
• (added) Uniquing an array

Booh 14:14, 22 January 2007 (EST)

A lot of people out there still use plain text passwords for their websites...

• MD5 encryption of passwords for use in authentication using a database
• Authenticating against that MD5 encrypted password that is stored in the database correctly

Corey1981 16:09, 23 January 2007 (EST)

Various fun bits of scientific computing:

• Numerical Integration (rectangle, trapezium, newton-cotes, runge-kutta, etc)
• Root finding
• Monte-carlo simulations

I can provide code for these in Fortran90 62.252.32.13 18:59, 23 January 2007 (EST)

I have an implementation of the hybrid Monte Carlo Markov chain, I'll upload it soon.