[Israel.pm] One-liner perl question

[ynon perek]

Hi All,

I'm trying to turn a short program into a one-liner. The program takes an
argument "n" and prints the first n file names sorted by file name length,
with no duplicates in length.

Here's what I wrote for the original code:
https://gist.github.com/3684778

The part I found difficult is to sort a dictionary by its keys, and print
the top n values...

Ideas ?

(clarification: this is just for fun, nothing important, and I'm not
interested in string based solutions, already got one on the same gist).

Cheers,
  Ynon

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