I am working on a problem where I calculate the result of nCr given n,r. n is the length of an array and r is the remaining length of a second array (ex: @t = (4,5,6,x,x,x) where x is an available spot).

What I want to do is take every combination of nCr and place those into separate arrays. So, using the above example @t and @array = (10,11,12,13,14), I want to get the 10 arrays from combining @t and @array with regards to 5C3. I can see this as a recursive solution, but I haven't wrapped my mind around the actual solution. Ideally, the solution will allow for nC1 and nCn cases. Anyway, I'm going to give it a stab after I get some sleep, but I would like to see other ideas as well.

Note: This is for a toy project at home. All would be homework denouncers can make mental note that I have been out of school for over a year now. It occurred to me that this is rather homeworky, so I figured that I'd be better off on getting real answers if I made this statement from the beginning. Thanks.

ALL HAIL BRAK!!!

In reply to nCr arrays of size r by PsychoSpunk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.