perlgolf holes

These are the holes which were prepared for the Perl Golf Apocalypse, a tournament of Perl Golf, at TPC4. The first two were intended as practice holes. Technical difficulties forced us to halt the tournament after revealing the next five holes, up to Vowel Sort.

Guidelines for Solving the Holes

These are the rules and guidelines that were used for the Perl Golf Tournament.

• General
  You may use Perl's standard documentation while writing your solutions. No other reference material may be used.
• Subroutines
  Subroutines that should return a single scalar value will always be called in scalar context. (Subroutines that should return a list will always be called in list context, of course.) You may make use of this fact while writing your solution.
  For example, a subroutine that returns the minimum element in a list will always be called in scalar context, while a subroutine that sorts a list of elements will be called in list context.
• One-liners
  You may write and test your one-liners in whatever shell you prefer, but they must be executable under bash (the Bourne-Again Shell) for judging purposes. Any solution which fails under bash will be disqualified.
  The following characters are metacharacters in bash: | & ; ( ) < > $ ! space tab
  These characters should be quoted either with quotation marks or a backslash. The quoting characters will count towards the length of the solution for scoring purposes.
  For example:
  $ perl -le print+2+4
  6
  $ perl -le print+2|4
  bash: 4: command not found
  $ perl -le print+2\|4
  6
  $ perl -le 'print 2|4'
  6
  All characters in the one-liner will be counted towards the length for scoring purposes. Of the following two solutions, the second one has a one-character advantage.
  perl -le print+2+4
  perl -leprint+2+4
  

The Holes

1. Fifth Word
2. Error Message
3. Max without Sort
4. Smallest Repeating Pattern
5. Hex to Char
6. Translate within Parentheses
7. Poetry
8. Vowel Sort
9. Digital Root
10. Rotate 180
11. Addition without Addition

Comments and Submitting Solutions

If you would like to show off your solutions to these holes, you can email them to rjk-perlgolf@tamias.net. They may appear on a forthcoming submitted solutions page. Feel free to send comments as well, on your solutions, on these holes, or on Perl Golf in general. Thanks!