Code Golf Christmas Edition: How to print out a Christmas tree of height N

Posted by TheSoftwareJedi on Stack Overflow See other posts from Stack Overflow or by TheSoftwareJedi
Published on 2008-12-25T12:48:11Z Indexed on 2010/04/30 23:17 UTC
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fun

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code-golf

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language-agnostic

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rosetta-stone

Given a number N, how can I print out a Christmas tree of height N using the least number of code characters? N is assumed constrained to a min val of 3, and a max val of 30 (bounds and error checking are not necessary). N is given as the one and only command line argument to your program or script.

All languages appreciated, if you see a language already implemented and you can make it shorter, edit if possible - comment otherwise and hope someone cleans up the mess. Include newlines and whitespace for clarity, but don't include them in the character count.

A Christmas tree is generated as such, with its "trunk" consisting of only a centered "*"

N = 3:

   *
  ***
 *****
   *

N = 4:

    *
   ***
  *****
 *******
    *

N = 5:

     *
    ***
   *****
  *******
 *********
     *

N defines the height of the branches not including the one line trunk.

Merry Christmas SO!

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