# CodeCodex:Requested articles

## ASCII file save

I am requesting an article about how to save a text / ascii document. -Codecodex 13:22, 1 May 2006 (CDT)

## Recursive descent parsing code

I'm requesting a recursive-descent-parser code.It parses expressions from standart input , all expressions are enclosed are parenthesis, one pair of parenthesis per one infix operator.ex: = x 5 =>5

= y 9

=> 9

(x + y) => 14

I added code in C -- See here: Recursive descent parsing -206.160.140.2 09:17, 16 May 2006 (CDT)

## Cryptographic code

hiii... does any one have code for any cryptographic techniques.. pls send it soon.

Are you looking for a specific laguage? Here's a good resource if you're looking for Java. [1] -WikiSysop 10:57, 15 July 2006 (CDT)

## Calculate pi in hexadecimal

I'm requesting a method of calculating a large number of digits of pi in hexadecimal (not digit-extraction). --172.190.244.120 16:05, 15 July 2006 (CDT)

--Are you looking for something that converts pi to hex, or something that generates pi using hex?

Hi friends,

```        Can anybody tell me how to upload a file(in java)? Like we upload files in yahoo,rediff etc.,
```

Yours, Member.

Hi and welcome. I just created CodeCodex:Upload Filetypes, a place where we can talk about file types that we should allow to be uploaded.
I've already added .java .jar .zip and .rar. What other file types should we allow to be uploaded? -Nostromo 12:20, 9 August 2006 (CDT)

## Matlab insertion sort and mergesort!

Hi can anybody give solution to the following problem in the form of code

Implement functions InsertionSort and MergeSort in Matlab. The function InsertionSort should be in the following form

[sorted_array no_comp] = insertion_sort (unsorted_array);

where unsorted_array is an input array of numbers, sorted_array is an output array of numbers sorted in the descending order, while no_comp is the number of comparisons performed by the function.

Similarly, function MergeSort should be in the following form

[no_comp] = merge_sort (unsorted_array);

where all input and output elements are defined in the same way as for InsertionSort. The difference between two functions is that MergeSort assumes that unsorted_array is a global variable defined in the wrapper function that calls it. Variable unsorted_arraywill be sorted in the descending order once the function returns to the main program.

Note: make sure that functions work for empty and small-sized input arrays.

## Request for Wiki source Code

Hai,

```I am working on an application which needs to help the user create pages on the fly. I would be glad if some one could send me wiki source code.
```

thanks and Regards ashok vundavalliashok@gmail.com

## Delete files and folders

I would like someone to add the C source code for:

Deleting a file, Deleting an empty folder, Deleting a folder with it's contents,

or anything similiar