You're thinking about the solution in terms of the letters being the equivalent of digits in a number. B=0, C=1, etc. and your equivalent of "get the next item in the sequence" is to say "current + 1", or "add C". In that system, it doesn't make sense for ZZ+C to be BBB, since BBB=0, and it also makes sense for "BB" (00) to magically become "B" (0).

But that's not the behavior you'd expect from a string: "BB" would stay "BB" and the next item in the sequence is BC, the same way that in the other solutions BBB comes after ZZ - that's just the next combination in a sequence of strings. Another way to think about it: In a sequence of strings, what reason would one have for skipping BBB?

In reply to Re: Incrementing strings revisited: What do i miss? by Anonymous Monk
in thread Incrementing strings revisited: What do i miss? [SOLVED] by karlgoethebier

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.