bronto,
I am not sure why eliminating too many repeated characters is a requirement, but here is a node that was a contest to find the most efficient way to get the number of unique characters in a string. From a brute force perspective - it is no easier to crack the password abcde then it is ppppp.

As far as identifying repeating sequence of characters, I do not know of an efficient method to do this, but:

  • Use substr with various lengths and starting positions
  • Use my $count = $temp_pass =~ s/$substring//g

    To get the count of how often the sequence repeats in the password. Again, I do not understand the point of this.

    I hope this helps - L~R

    In reply to Re: Minimal password check, again by Limbic~Region
    in thread Minimal password check, again by bronto

    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.