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bluegod/gist:fa9fdb4a637df39de246

Last active August 29, 2015 14:05
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gistfile1.rb
#One line (command line) solution in Ruby to the Lattice paths problem for a configurable 20x20 frame.
echo "r=20;n=r+20; ((0...r).inject(1) do |m,i| (m * (n - i)) / (i + 1) end)" | irb
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