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janlelis/gist:245116

Created November 29, 2009 23:12
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# christmas tree (golfed version): http://www.ruby-mine.de/2009/11/22/weihnachten
puts"Grösse?"
(Z.times{|n|0.upto(Z){puts" "*(2*Z-n)+"*%d"%(n+=1)*n}
$*<<"%#{2*Z+2}s"%:II}
puts$*)if 0<Z=gets.to_i
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